EMC.Certkey.E v by.KATHERINE.237q

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1 EMC.Certkey.E v by.KATHERINE.237q Number: E Passing Score: 800 Time Limit: 120 min File Version: Exam Code: E Exam Name: Backup and Recovery - Avamar Specialist Exam for Storage Administrators

2 Exam A QUESTION 1 Which hash type represents an individual data chunk processed during an EMC Avamar backup? A. Atomic B. Root C. Composite D. Metadata /Reference: :

3 QUESTION 2 For each file that is backed up in an EMC Avamar system, how many total bytes are added to the file cache? A. 20 B. 24 C. 40 D. 44 Correct Answer: D /Reference:

4 : The most important thing to do on a client with so many files is to make sure that the file cache is sized appropriately. The file cache is responsible for the vast majority (>90%) of the performance of the Avamar client. If there's a file cache miss, the client has to go and thrash your disk for a while chunking up a file that may already be on the server. So how to tune the file cache size? The file cache starts at 22MB in size and doubles in size each time it grows. Each file on a client will use 44 bytes of space in the file cache (two SHA-1 hashes consuming 20 bytes each and 4 bytes of metadata). For 25 million files, the client will generate just over 1GB of cache data. QUESTION 3 What are three types of EMC Avamar hashes? A. Composite, Root, and Atomic B. Root, Atomic, and Index C. Composite, Atomic, and Stripe D. Root, Atomic, and Parity /Reference: : QUESTION 4 What is used by EMC Avamar to provide system-wide fault tolerance? A. RAID, RAIN, Checkpoints, and Replication B. RAID, RAIN, Checkpoints, and HFS check C. Asynchronous crunching, Parity, RAIN, and Checkpoints D. HFS check, RAIN, RAID, and Replication /Reference: : QUESTION 5 The EMC Avamar client needs to backup a file and has performed sticky-byte factoring. This results in the following: - Seven (7) chunks that will compress at 30% - Four (4) that will compress at 23% - Two (2) chunks at 50% compression How many chunks will be compressed prior to hashing? A. 4 B. 7 C. 9

5 D. 13 Correct Answer: C /Reference: : vamar, has a rather nifty technology called Sticky Byte Factoring which allows it to identify the changed information inside a file by breaking the file into variable length objects, this leads to much greater efficiency than fixed size approaches as changes made early in a fixed length sequence affect all subsequent blocks/ chunks/objects/whatever in that sequence. This in turn changes all the fingerprints taken following the changed data which means you end up with a lot of new blocks/chunks/objects/whatever even if the data really hasn't changed all that much. Sticky Byte Factoring on the other hand can tell what exactly has changed, not just that things have changed. QUESTION 6 Which four account management actions can be performed from the EMC Client Manager interface? A. Move clients to a new server Retire clients Move clients to a new domain View management log B. Move clients to a new domain Retire clients Modify client group associations Schedule backups C. View management log Modify replication Retire clients Move clients to a new server D. View management log Retire clients Delete clients Browse clients /Reference: : QUESTION 7 In EMC Avamar 6.0, which tool is used to completely move clients to a new Avamar server? A. Client Manager B. Enterprise Manager

6 C. Activation Manager D. Avamar Administrator /Reference: : QUESTION 8 Which tool is used to move a client to a new domain in EMC Avamar 6.0? A. Client Manager B. Activation Manager C. Enterprise Manager D. Installation Manager /Reference: :

7 QUESTION 9 How many simultaneous client connections per node will an EMC Avamar server support? A. 10 B. 15 C. 18 D. 25 Correct Answer: C /Reference: : During the backup window, an Avamar server has 18 backup "slots" per node, minus one slot that is globally reserved for restore. QUESTION 10 What is a characteristic of variable block deduplication? A. Better granularity and more efficiency B. Commonly provided in snapshot technologies C. Small changes require all segments to change D. Most common deduplication method /Reference: :

8 QUESTION 11 A storage node in a multi-node Avamar server has failed and a replacement node has been added to the grid. What is used to reconstruct the data on the new node? A. RAIN B. RAID C. Checkpoint D. Replication /Reference: : QUESTION 12 Which port on the Avamar server does the client connect to when performing a backup with encryption enabled? A B C D Correct Answer: D /Reference: :

9 QUESTION 13 Which time zone is used on EMC Avamar nodes? A. Local time on the utility node; GMT/UTC on the storage nodes B. GMT/UTC on the utility node; local time on the storage nodes C. All node types use the local time D. All nodes use GMT/UTC time /Reference: :

10 QUESTION 14 In an EMC Avamar backup operation, which process always produces identical chunk results given the same data? A. Sticky-byte factoring B. Compression C. File caching D. Hashing /Reference: : QUESTION 15 On an EMC Avamar server, what is the file extension of stripes that contain backup chunks? A. *.dat B. *.usd C. *.chd D. *.cdt /Reference: 7

11 : QUESTION 16 A customer is unable to connect to their EMC Avamar server when using the Avamar Administrator GUI. If default settings are being used, which port must be open for a successful connection? A B C D Correct Answer: B /Reference: : QUESTION 17 Which interface is used to start Avamar Client Manager? A. Enterprise Manager B. Command Line C. cron job D. Avamar Administrator /Reference: :

12 QUESTION 18 Which size Avamar Gen4 storage node is supported for a RAIN configuration? A. 1.0 TB B. 1.3 TB C. 2.6 TB D. 3.9 TB Correct Answer: D /Reference: : For Gen4 3.9TB node : Raw capacity is 6 TB and licensed capacity is 3.9 TB

13 For Gen4 7.8 TB node: Raw capacity is 12 TB and licensed capacity is 7.8 TB So, In a RAIN config with 1 utility node and 4 storage nodes (7.8 TB), the total capacity should be 48 TB and total licensed capacity is 31.2 TB QUESTION 19 Which processes are started automatically during an EMC Avamar Windows client installation? A. avagent and avscc only B. avtar and avagent only C. avtar, avagent, and avscc D. avscc and avtar only /Reference: : QUESTION 20 Which administrative tasks can be performed using the EMC Avamar Enterprise Manager? A. Configure replication, run reports, and view operational status B. Configure backups, view operational status, and run reports C. Run reports, configure backups, and configure replication D. View operational status, configure replication, and configure backups /Reference: :

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15 QUESTION 21 What is the first process performed by avatar when running an EMC Avamar backup? A. Traverses each directory in the backup dataset B. Checks the client's file cache C. Runs sticky-byte factoring D. Writes to the hash cache file /Reference: :

16 QUESTION 22 A company wants to back up their EMC Celerra to their Avamar server. Where is the Avamar backup client software installed? A. Accelerator node B. Celerra Data Mover C. Proxy server D. Utility node /Reference: : QUESTION 23 By default, which port is required to be open on the firewall for client communications with the EMC Avamar utility node?

17 A B C D Correct Answer: C /Reference: : QUESTION 24 How much RAM is required for an EMC Avamar Gen4 utility node? A. 4 GB B. 8 GB C. 12 GB D. 24 GB Correct Answer: C /Reference: :

18 QUESTION 25 What is the maximum number of nodes that can be configured for an EMC Avamar multi-node grid? A. 15 storage, 1 utility, 1 NDMP, and 1 spare B. 16 storage, 1 utility, and 1 spare C. 17 storage and 1 utility D. 17 storage, 1 utility, and 1 spare Correct Answer: B /Reference: :

19 h10584-avamar-technical-considerations-sp-wp_2.pdf QUESTION 26 A company is using an EMC Avamar multi-node server with 2 TB storage nodes. The company wants to add 3 TB of Avamar storage to the multi-node server. How can this be achieved? A. Add one 3.3 TB storage node B. Add two 2 TB AVEs C. Add two 2 TB storage nodes D. Add three 1 TB storage nodes Correct Answer: C /Reference: :

20 QUESTION 27 Which client process listens for a work order from the EMC Avamar server? A. avagent B. avtar

21 C. avscc D. mcs /Reference: : Avamar Node Types and Processes There are several different types of Nodes within an Avamar Server. The Utility node is the identity of the Avamar Server and provides the bulk of the internal Avamar server processes such as: Avamar Administrator (used to manage the Avamar Server from a gui), cron jobs, DNS, NTP, external authentication, web access, MCS and EMS. MCS (Management Console Server) provides centralized management including scheduling of backups, restore of backups, monitoring and reporting. EMS (Enterprise Manager Server) provides web based management for multiple Avamar Servers as well as monitoring and configuration for Avamar Replication. Web Access provides access to documentation, backup plug-ins as well as remote File System restore access to end users. Are next type of node is the Storage Node, which run a process called gsan. This service communicates with the avtar command on the individual backup clients. Avtar communicates with a storage nodes gsan process,

22 then that storage node spreads the data across the available data nodes. A Spare Node is an active node that is present in a multi-node RAIN (Redundant Array of Independent Nodes) grid. The interesting thing about the Spare Node is that it is NOT a hot spare. There is a procedure in place that needs to be followed when a failed Storage Node occurs. In fact, the Avamar Server doesn t even care if the Spare Node is powered on, so if you are a Green conscience company, feel free to leave the Spare Node powered down. EMC Best Practice is to leave the Spare Node up and active though. Avamar Backups clients can be installed with 2 different types of client plug-ins: File System and Databases. The Avamar client uses 2 processes in the backup and restore process: Avtar and Avagent. The Avagent process listens for backup/restore work orders from the MCS service on the Utility Node using port and executes the avtar command that handles the backup/restore processes and communicates with the gsan service on the storage nodes. This process is depicted in the included picture above. Lastly, in a previous blog, I discussed the 2 different licensable options for Avamar and how the disks are comprised in each Storage Nodes type. These are depicted in the picture above as well as a breakdown of how the disks are structured. QUESTION 28 In EMC Avamar, what is a variable-size unit of deduplicated data? A. Chunk B. Stripe C. Hash D. Block /Reference: :

23 QUESTION 29 An EMC Avamar customer, without premium support, has a requirement to be able to recover from a failed storage node. What is the minimum amount of nodes, of all types, that is required to support this functionality? A. 1 B. 2 C. 3 D. 5 Correct Answer: D /Reference: :

24 Single Node. Also known as the Non-RAIN (Redundant Array of Independent Nodes) configuration. This is the entry level configuration in which the single node acts as the utility node and the data storage node. When using this configuration 2 single nodes are needed. 1 is the main backup node, and the 2nd is used for replication purposes for fault tolerance. Used in small to medium sized environments. Muti-Node Non RAIN. This is basically is a 3 node setup consisting of 1 Utility Node and 2 Data Storage Nodes. It allows for double the storage capacity of a Single Node device. This configuration also needs a duplicate setup for replication, so a total of 6 Nodes would be needed for fault tolerance. Used in medium sized environments. Multi-Node RAIN. The Standard RAIN configuration has 1 Utility Node, 4 Data Storage Nodes and 1 Spare Node. This configuration can be expanded for a total of 16 Data Storage Nodes max. All of the nodes work together to balance the storage equally across all of the other Data Storage Nodes. This architecture is easily scaled by adding as many Storage nodes as necessary. Typically used in large environments, this configuration can be initially setup with 3 Storage nodes instead of the standard 4 Storage nodes. It is recommended to setup a duplicate Multi-Node RAIN for replication, typically at a DR site. Although it is recommended, it is not a necessity like the Non-RAIN configurations, because there is a spare node that can be configured at any point for fault tolerance. QUESTION 30 Which feature is available through the Avamar Enterprise Manager, but not available through the Administrator console? A. Configuring selective replication B. Generating reports C. Viewing policy information

25 D. Viewing system status information /Reference: : QUESTION 31 Based on the configuration represented in the exhibit, 13 which type(s) of EMC Avamar replication can be used? A. Normal B. Full copy C. Root-to-root D. Normal and root-to-root /Reference: : QUESTION 32 Where are replication log files stored on an EMC Avamar server? A. /usr/local/avamar/var/cron/replicate.log B. /usr/local/avamar/var/log/replicate.log C. /usr/local/avamar/var/cron/log/replicate.log

26 D. /usr/local/avamar/log/replicate.log /Reference: : QUESTION 33 A storage administrator is using the Avamar Administrator console to configure replication. What is the default password for the "repluser" account? A. 9RttoTriz B. 8RttoTriz C. changeme D. P3t3rPan /Reference: : QUESTION 34 A storage administrator wants to migrate from a single-node EMC Avamar server to a Avamar multi-node server. Which method of replication should be used? A. Root-to-root B. Root-to-replicate C. Selective D. Normal /Reference: :

27 QUESTION 35 Which functionality is only available with EMC Avamar selective replication? A. Replication of selected clients B. Replication of selected datasets of selected clients C. Replication to selected destinations D. Replication on selected days of the week /Reference: : QUESTION 36 An EMC Avamar storage administrator has 400 Microsoft Windows clients; 350 are production and 50 are development. The administrator wants to replicate only the production servers. If repl_cron.cfg is changed to exclude only the development servers, what will be replicated? A. Production clients, MC_Backups, and EM_Backups only B. Production clients only C. Production clients and MC_Backups only

28 D. Production clients, MC_Backups, EM_Backups, and checkpoints /Reference: : QUESTION 37 An EMC Avamar storage administrator has 400 Microsoft Windows clients; 350 are production and 50 are development. The administrator wants to replicate only the production servers. If Enterprise Manager is used to only include the production servers, what will be replicated? A. Clients B. Clients and MC_Backups C. Clients, MC_Backups, and EM_Backups D. Clients, MC_Backups, EM_Backups, and checkpoints /Reference: : QUESTION 38 An EMC Avamar server is configured to use the default settings. What is the maximum allowable O/S capacity utilization after which HFS checks will not run? A. 65% B. 85% C. 90% D. 95% Correct Answer: C

29 /Reference: : Capacity Threshold Warnings: 80% of user capacity = warning, start planning for expansion or cleanup 95% user capacity is the health check warning, new backups are suspended 100% user capacity makes the Avamar read-only, can still restore from server 85% of OS capacity = Garbage collection stops running, utilization increases rapidly 90% OS capacity = HFS checks stop running 96% OS capacity = no more checkpoints QUESTION 39 What is the behavior of an EMC Avamar HFS check when it detects an error in a stripe? A. Attempts stripe repair B. Aborts checking and restarts C. Completes with exceptions D. Stops the GSAN /Reference: :

30 QUESTION 40 Which EMC Avamar Administration Console window is used to adjust the time when the server runs garbage collection? A. Tools => Manage Schedules B. Administration => Event Management C. Policy => Policy Management D. Administration => Services Administration /Reference: : QUESTION 41 Which factor has the most impact on checkpoint overhead for an EMC Avamar server? A. System daily change rate B. Retention policy of the clients C. O/S platform of the clients D. Number of groups configured /Reference: : QUESTION 42 In EMC Avamar, what is the default duration of the backup window? A. 6 hours B. 8 hours C. 10 hours D. 12 hours Correct Answer: D /Reference: : QUESTION 43 Garbage collection is running on an EMC Avamar server. Which activities can be performed at this time? A. Restore, browse existing backups, and queue backups B. Delete backups and change retention settings C. Change retention settings, and modify clients and domains D. Restore, delete backups, and add new clients

31 /Reference: : This question was for Avamar 6 so removing queue from A will make it the best ideal answer. situation in Avamar 7# QUESTION 44 What is the maximum number of backups that can be running per Avamar storage node in order for HFS check to initiate successfully? A. 1 B. 2 C. 3 D. 4 Correct Answer: B /Reference: : This question might be valid only for Avamar 6

32 QUESTION 45 What is the access mode of the server during an EMC Avamar checkpoint maintenance activity? A. Read-only during checkpoint creation. Read/write for the remainder of the activity. B. Read-only throughout the activity. C. Access is disabled throughout the activity. D. Access is disabled during checkpoint creation. Read-only for the remainder of the activity. /Reference: : QUESTION 46 Which EMC Avamar Management Console navigation screen can be used to check when the last checkpoint and checkpoint validation occurred? A. Server B. Activity C. Administration D. Policy /Reference: : 19 QUESTION 47 What is the recommended replication method for moving all data and clients from a single node to a multi-node EMC Avamar server? A. Root-to-root replication B. Root-to-REPLICATE replication C. Selective replication D. MCS/SQL Dump Export/Import

33 /Reference: : QUESTION 48 Which EMC Avamar replication mode allows for many-to-one and bi-directional replication? A. Normal B. Failover C. Root-to-root D. Selective root-to-root /Reference: : I believe no asnwer is valid for avamar 7

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35 QUESTION 49 A storage administrator is troubleshooting an EMC Avamar client that is failing with "Time Out - Start". Which log is the first place to check? A. avagent.log B. avtar.log C. gsan.log D. err.log /Reference: : 20 QUESTION 50 When the Avamar "getlogs" script is executed, where is the output stored?

36 A. tar file in the current directory on the utility node B. root directory on each storage node C. tmp directory on the storage node D. tar file in the current directory on each storage node /Reference: : QUESTION 51 In steady state, what is the approximate rate of data removed from an Avamar grid during a daily garbage collection? A. 10 GB per hour per node B. 10 GB per hour per grid C. 100 GB per hour per node D. 100 GB per hour per grid /Reference: :

37 QUESTION 52 What are the EMC Avamar daily activities that run during the maintenance window? A. Checkpoint and HFS check B. Garbage collection and HFS check C. HFS check and Rollback D. Checkpoint and Rollback /Reference: : This has been changed with Avamar 7

38 QUESTION 53 At which percentage of the O/S capacity does garbage collection stop running in an EMC Avamar environment? A. 85 B. 90 C. 96 D. 100

39 /Reference: : Capacity Threshold Warnings: 80% of user capacity = warning, start planning for expansion or cleanup 95% user capacity is the health check warning, new backups are suspended 100% user capacity makes the Avamar read-only, can still restore from server 85% of OS capacity = Garbage collection stops running, utilization increases rapidly 90% OS capacity = HFS checks stop running 96% OS capacity = no more checkpoints QUESTION 54 On an EMC Avamar server, the maintenance schedule is enabled. If the server is over a certain capacity, when will the server automatically cancel backups that are running under the default configuration? A. At the start of the blackout window B. At the start of the maintenance window C. After the first checkpoint in the blackout window D. After the backup has fully completed /Reference: : No Blackout in Avamar 7 QUESTION 55 Which user account and default password should be used when configuring an additional EMC Avamar server in Enterprise Manager? A. MCUser / MCUser1 B. Avamar internal root / 8RttoTriz C. O/S root / changeme D. O/S admin / changeme /Reference: : QUESTION 56 At which percentage of user capacity will EMC Avamar issue the first warning? A. 70 B. 80 C. 85 D. 65

40 Correct Answer: B /Reference: : Capacity Threshold Warnings: 80% of user capacity = warning, start planning for expansion or cleanup 95% user capacity is the health check warning, new backups are suspended 100% user capacity makes the Avamar read-only, can still restore from server 85% of OS capacity = Garbage collection stops running, utilization increases rapidly 90% OS capacity = HFS checks stop running 96% OS capacity = no more checkpoints QUESTION 57 At which percentage of user capacity are new backups suspended in an EMC Avamar environment? A. 85 B. 95 C. 96 D. 100 Correct Answer: B /Reference: : Capacity Threshold Warnings: 80% of user capacity = warning, start planning for expansion or cleanup 95% user capacity is the health check warning, new backups are suspended 100% user capacity makes the Avamar read-only, can still restore from server 85% of OS capacity = Garbage collection stops running, utilization increases rapidly 90% OS capacity = HFS checks stop running 96% OS capacity = no more checkpoints QUESTION 58 A company wants to compare the amount of Avamar storage that a Microsoft Windows file server client consumes with that of a UNIX DB2 server. Which tool can be used to determine the amount of Avamar storage used by a particular client? A. Avamar Administrator => Backend Capacity Report B. Avamar Administrator => Group Status Summary C. Command Line Utility => capacity.sh D. Enterprise Manager => Capacity Usage Report 23

41 /Reference: : QUESTION 59 A storage administrator wants to determine if the EMC Avamar server is running in steady state. Which command/script must be run? A. capacity.sh B. status.dpn C. dpnctl status D. healthcheck.pl /Reference: : QUESTION 60 Which factor(s) impacts the EMC Avamar checkpoint overhead? A. System daily change rate B. Frequency of client backups C. Whether backups succeed everyday D. Size of the grid and licensed amount /Reference: : QUESTION 61 The exhibit shows a portion of a DPN Summary report. Which field on the report indicates how much data has been transferred to the EMC Avamar server? A. ModSent

42 B. TotalBytes C. ModReduced D. PcntCommon /Reference: :

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45 QUESTION 62 An EMC Avamar customer is analyzing the DPN Summary report shown in the exhibit. What does the field "TotalBytes" represent? A. Number of bytes examined during the backup B. Number of bytes from modified files not sent due to commonality C. Total bytes reduced due to compression D. Total bytes sent to the server during the backup Correct Answer: B /Reference: : Corrected from A to B

46 QUESTION 63

47 By default, what is a characteristic of Avamar ConnectEMC? A. Sends Avamar alerts as they occur B. Sends Avamar alerts twice daily C. Sends reports twice daily D. Sends reports as they are created /Reference: : QUESTION 64 By default, what does the Avamar Home profile send? A. Status of the daily integrity check B. Avamar alerts once daily C. Reports once daily D. Avamar alerts as they occur Correct Answer: D /Reference: : Changed from A to D QUESTION 65 A company using EMC Avamar wants to delete a backup from their grid during the end of the maintenance window. However, they are not able to delete it. What may prevent the backup from being deleted? A. Garbage collection has been manually started B. Maintenance activities have been suspended C. Backups are running on the client

48 D. O/S capacity utilization exceeds 80% /Reference: : QUESTION 66 Which factor(s) affect the capacity utilization in an EMC Avamar environment? A. Total amount of primary data being backed up B. How often the backups are scheduled to run C. Size of the grid and license amount D. Whether HFS check succeeds every day /Reference: : QUESTION 67 A company has 50 clients backing up to an EMC Avamar server. The storage administrator has decided to enable desktop/laptop (DTLT) support for several of the Microsoft Windows client machines. Where is this support enabled? A. Avamar client software installation B. Avamar Windows Client Options menu C. Avamar Administrator Policy window D. Windows File System plug-in /Reference: : QUESTION 68 Which type of data can be restored by a user with EMC Avamar Desktop/Laptop (DTLT)? A. Only data owned by the user B. Any data backed up from the client C. All data stored on the Avamar server D. All data belonging to clients in the same Avamar domain /Reference:

49 : QUESTION 69 An EMC Avamar storage administrator is creating a single dataset for all Microsoft Windows XP and Windows Vista desktop/laptop (DTLT) clients. In the source data, the administrator includes C:\Documents and Settings and C:\Users Which flag needs to be added to prevent the "Path not found" error? A. #USERDOCS# B. #FLAGFILEPATH# C. #IGNORECONFIG# D. #VARDIRFLAG# /Reference: : QUESTION 70 According to EMC Avamar best practices, what is the maximum ratio of database data to file system data that should exist in an Avamar backup environment? A. 10:90 B. 20:80 C. 30:70 D. 50:50 Correct Answer: B /Reference: : QUESTION 71 A storage administrator has successfully configured EMC Avamar to use Microsoft Windows Active Directory external authentication. Which accounts and/or interfaces can be accessed by users set up to use this authentication? A. Avamar Administrator, Enterprise Manager, and Web Access B. MCUser, admin, and Enterprise Manager C. Avamar Administrator, root, and dpn D. MCUser, Web Access, and root

50 /Reference: : QUESTION A multi-node EMC Avamar server is backing up clients worldwide. What must the storage administrator keep in mind to help ensure that backup schedules do not conflict with the Avamar server blackout window? A. Time basis for a backup schedule is the local time of the Avamar Administrator session B. Time basis for clients is the local time where the Avamar server utility node resides C. Time basis for the GSAN is the local time zone where the server resides D. Time basis for the maintenance schedules is GMT/UTC /Reference: : QUESTION 73 On an EMC Avamar Windows client host, what is the default location for the Avamar software? A. C:\program files\avs B. C:\program files\avamar C. C:\avamar\avs D. C:\avmrclnt /Reference: : QUESTION 74 You are performing an ad-hoc backup from a Microsoft Windows client. Which log file would you use to investigate communication issues between the Avamar client and the Avamar server utility node? A. avagent.log B. COD-workorder-Windows.log C. MOD-workorder-Windows.log D. err.log /Reference: : 30

51 QUESTION 75 How many total concurrent backup jobs can be run on an EMC Avamar server? A. 17 backup jobs per storage node B. 17 backup jobs per storage node, plus 1 per Avamar server C. 18 backup jobs per storage node D. 18 backup jobs per storage node, minus 1 per Avamar server Correct Answer: D /Reference: : QUESTION 76 A storage administrator is planning to back up virtual machines residing on an ESX 4.0 server using EMC Avamar and VMware vsphere. What is a characteristic of this type of backup? A. Image proxy is located on a virtual machine B. Avamar Interoperability Module must be installed C. All virtual machines must be powered on D. All virtual machines must be running Microsoft Windows 2003 /Reference:

52 : QUESTION 77 A company recently deployed an EMC Avamar Gen4 server with Avamar 6.0 software to protect their data. The backup administrator wants system state protection for their critical Microsoft Windows 2003 servers. What is the recommended method? A. HomeBase embedded feature B. Windows Server Backup C. NTBackup option D. HomeBase embedded with HomeBase server /Reference: : 31 QUESTION 78 What is a potential impact of having an undersized hash cache on an EMC Avamar client? A. More queries to the Avamar server B. Decreased memory swapping C. More backup data sent to the Avamar server D. More chunks are compressed /Reference: : QUESTION 79 A company has just deployed a VMware environment. The EMC Avamar storage administrator wants to ensure they receive the highest level of deduplication within the environment for backups. Which type of backup should be performed? A. Guest B. ESX console C. VCB D. vsphere Image /Reference: : QUESTION 80

53 A Microsoft Windows user is about to initiate an on-demand backup from the client interface when the utility node fails on their multi-node EMC Avamar grid. What must be done prior to initiating the backup to ensure the backup will complete successfully? A. Nothing. Backups are performed from the client to the storage nodes directly. B. The utility node must be replaced and the configuration restored prior to starting the backup. C. The spare node must be converted to a utility node and the configuration restored to it prior to starting the backup. D. The client must be activated temporarily to the first storage node and then the backup can continue. /Reference: : QUESTION 81 In which directory are the Avamar data server log files located in a multi-node Avamar server? A. /data01/cur on each storage node B. /sysinfo/log on the utility node C. /data01/cur on the utility node D. /var/log on each storage node /Reference: : QUESTION 82 On which cluster node(s) is the Avamar Windows File System client installed in a Microsoft Windows 2008 cluster? A. All nodes B. Only the active node C. Only the passive nodes 33 D. None of the nodes /Reference: : QUESTION 83 Due to a scheduling conflict, an EMC Avamar administrator had to cancel the backup of a client using the Avamar Administration GUI. What happens to the backup data that had already been sent to the Avamar server? A. Data is retained for seven days as a partial backup B. Chunks from the incomplete backup will be removed at the next garbage collection

54 C. Data is retained for the remainder of the retention policy that was used for the backup D. Data is tagged "corrupted" and will be marked recoverable at the next HFS check /Reference: : QUESTION 84 When sizing a large database server on an EMC Avamar, how many bytes per entry are added to the hash cache? A. 20 B. 24 C. 40 D. 44 Correct Answer: B /Reference: : The most important thing to do on a client with so many files is to make sure that the file cache is sized appropriately. The file cache is responsible for the vast majority (>90%) of the performance of the Avamar client. If there's a file cache miss, the client has to go and thrash your disk for a while chunking up a file that may already be on the server. So how to tune the file cache size? The file cache starts at 22MB in size and doubles in size each time it grows. Each file on a client will use 44 bytes of space in the file cache (two SHA-1 hashes consuming 20 bytes each and 4 bytes of metadata). For 25 million files, the client will generate just over 1GB of cache data. QUESTION 85 When sizing a large file server on an EMC Avamar, how many bytes per file are added to the file cache? A. 20 B. 24 C. 40 D. 44 Correct Answer: D /Reference: : The most important thing to do on a client with so many files is to make sure that the file cache is sized appropriately. The file cache is responsible for the vast majority (>90%) of the performance of the Avamar client. If there's a file cache miss, the client has to go and thrash your disk for a while chunking up a file that may already be on the server. So how to tune the file cache size?

55 The file cache starts at 22MB in size and doubles in size each time it grows. Each file on a client will use 44 bytes of space in the file cache (two SHA-1 hashes consuming 20 bytes each and 4 bytes of metadata). For 25 million files, the client will generate just over 1GB of cache data. QUESTION 86 In EMC Avamar, what is the purpose of the p_cache.dat file? A. Determines if a chunk is already stored on the Avamar server B. Determines if a file is already stored on the Avamar server C. Stores storage node IP addresses D. Sets backup flags and options /Reference: : QUESTION 87 A company has an EMC Celerra volume with 40 million files. They want to back up the entire volume using a single EMC Avamar accelerator. According to best practices, what is the minimum number of backup streams that should be used? A. 1 B. 2 C. 4 D. 5 Correct Answer: C /Reference: :

56 QUESTION 88 When a backup is initiated by the EMC Avamar client application, how is the retention determined? A. End User On-Demand Retention policy B. Retention policy of the default group C. Retention policy of the clients group D. Retention policy for the domain /Reference: : QUESTION 89 Based on EMC best practices, what is recommended when creating Avamar schedules? A. Use a single schedule where possible B. Use a different schedule for each group C. Use multiple schedules to ensure backup jobs do not overlap

57 D. Use a separate schedule for each client /Reference: : QUESTION 90 What is an EMC Avamar best practice when performing an Microsoft Exchange 2003 Message Level restore of an individual message? A. Restore to a temporary dedicated folder B. Restore to the same folder C. Restore to another Exchange database D. Restore to a new temporary Exchange database /Reference: : QUESTION 91 What is a characteristic of EMC Avamar VMware Image Level backups? A. Change Block Tracking option can be used to shorten backup times 36 B. Avamar client software is installed on each VMware virtual machine C. File-level restores are supported for all client operating systems D. Image proxy must be located on a different ESX server from the ESX server hosting the target machines /Reference: : QUESTION 92 What is an advantage of performing VMware Image Level backups with EMC Avamar? A. Backups can occur while virtual machines are powered on or off B. Virtual machines are backed up like any other physical machine C. Highest level of data deduplication is provided D. Database plug-ins are supported for backups and restores /Reference: : QUESTION 93

58 According to EMC best practices, what is the maximum percentage of physical RAM that should be allocated for the hash and file caches combined? A. 15 B. 25 C. 30 D. 40 Correct Answer: B /Reference: : QUESTION 94 According to EMC best practices, what is recommended when planning for an EMC Avamar client deployment? A. Maximum of 5 million to 10 million files per client B. Maximum of 5 TB of database data per client C. Maximum of 10 TB of file system data per client D. Maximum of 500 GB of database data per client /Reference: : QUESTION 95 Based on EMC best practice, what is recommended when creating Avamar domains? A. A minimal number of domains B. A domain for every client C. A domain for each file system D. A sub-domain for each hardware platform /Reference: : QUESTION 96 By default, what does the "asktime" utility do when executed on the utility node? A. Configures the current time on the utility node and on all storage nodes B. Reports the NTP server's current time C. Reports the time on the utility node D. Configures the current time on the storage nodes

59 /Reference: : QUESTION 97 An EMC Test Lab manager has asked you to implement Avamar 6 on their EMC Avamar Data Store (ADS) Gen3 that is currently running Avamar 4.0. Can this Avamar ADS Gen3 server be made to run Avamar 6? A. Yes. Upgrade Avamar 4.0 to 4.1 and then upgrade from 4.1 to 6.0. B. No. Avamar 6 cannot be installed or upgraded on Avamar ADS Gen3 servers. C. Yes. Re-kickstart the Gen3 nodes with RHEL OS and perform a new install of Avamar 6. D. Yes. Re-kickstart the Gen3 nodes with SLES OS and perform a new install of Avamar 6. /Reference: : Not sure about the original answer!! Road Map for Avamar 6#

60 Road Map for Avamar 7#

61

62 QUESTION 98 An EMC Project Manager asks you to provide a deliverable that documents all details of an EMC Avamar server implementation. Which deliverable is used? A. TS-Kit Configuration Guide B. TS-Kit Test Plan C. SVC Qualifier D. Statement of Work

63 /Reference: : QUESTION 99 What are the Avamar 6 install and upgrade rules for Gen1 through Gen4 node technology? A. Gen4/3 can be installed new or upgraded. Gen2 can be upgraded only. Gen1 cannot be installed new or upgraded. B. Gen4 can only be installed new. Gen3/2 can be installed new or upgraded. Gen1 cannot be installed new or upgraded. C. Gen4 can be installed new or upgraded. Gen3/2/1 can only be upgraded. D. Gen4 can only be installed new. Gen3/2 can only be upgraded. Gen1 cannot be installed new or upgraded. /Reference: : 39 QUESTION 100 A customer has received an Avamar Gen4 Data Store. They want the software version on the new system to match their existing Avamar 5.0 system. What do you tell the customer? A. New system must run a minimum level of Avamar version 6.0 to support Gen4 B. New system can be downgraded to Avamar version 5.0 C. New system runs Avamar versions 5 and 6 natively to support existing systems D. New system can have VMware added to it to support older Avamar versions /Reference: : QUESTION 101 A customer site requires five network connections into their Gen4 Avamar Data Store (ADS) Server utility node. However, you observe that none of the Gen4 nodes in the server rack have more than four Ethernet connections on their rear panel. What will you tell the customer? A. Order a Gen4 ADS utility node to replace one of the other nodes B. Gen4 nodes do not have more than four Ethernet connections

64 C. Add additional Ethernet connections to the current Gen4 utility node D. Order a Gen4 ADS storage node to replace one of the other nodes /Reference: : QUESTION 102 An EMC Avamar Gen4 server has arrived at a customer's site. You begin reviewing the hardware for an Avamar 6 installation. You find that two of the five nodes are Gen3 running RHEL OS and the others are running SLES OS. Can you proceed with the install? 40 A. No. All nodes in a Gen4 server must be Gen4 running SLES OS. B. Yes. The two nodes running RHEL can be re-kickstarted with SLES OS. C. Yes. The three nodes running SLES can be re-kickstarted with RHEL OS. D. No. All nodes in a Gen4 server must be Gen4 running RHEL OS. /Reference: : QUESTION 103 An EMC Avamar backup administrator is logged in as root. The administrator is running a mapall date command to all nodes, all of which respond with a password prompt. Which SSH keys need to be loaded? A. dpnid account B. MCUser account C. root account D. customer's account /Reference: : QUESTION 104 The EMC Avamar Procedure Generator expires on a periodic basis, requiring connecting to the EMC network for an update. How often does this happen? A. Every four days B. Every week C. Every two weeks

65 D. Every four weeks Correct Answer: C /Reference: : Has been replaced by SolVe Desktop this March#

66 QUESTION Which EMC tool provides all the necessary steps, in the correct order, to implement an EMC Avamar server? A. Avamar Procedure Generator B. EMC Backup System Sizer C. TS-Kit Configuration Guide D. TS-Kit Test Plan /Reference: : QUESTION 106 Which Avamar Gen4 nodes can be used in multi-node configurations? A. 1.3 TB, 3.9 TB B. 2.6 TB, 3.9 TB C. 2.6 TB, 7.8 TB D. 3.9 TB, 7.8 TB Correct Answer: D

67 /Reference: : QUESTION 107 Which Information is required when registering an EMC Avamar environment to IBGroup? A. Microcode number B. Avamar node sizes C. LUN configuration D. Avamar license size /Reference: : QUESTION 108 Which information must be provided to TrackCustomerMaster@emc.com after the Avamar 42 software has been installed? A. Company name B. Party ID C. Avamar System ID D. Avamar cabinet serial number /Reference: : QUESTION 109 Which size Avamar Gen4 node has 100 GBs of SSD storage? A. 1.3 TB B. 2.6 TB C. 3.9 TB D. 7.8 TB Correct Answer: D /Reference: : QUESTION 110 You need to install a multi-node EMC Avamar server. To which location should you copy the Avamar software file? A. Utility node only

68 B. Utility node and active data nodes C. Utility node, active data nodes, and spare node D. Active data nodes only /Reference: : QUESTION 111 By default, where are the cache files located on an EMC Avamar Windows backup client? 43 A. C:\Program Files\avs\var B. C:\Program Files\avs\var\clientlogs C. C:\Program Files\avs\etc D. C:\Program Files\avs\bin /Reference: : QUESTION 112 When accessing the utility node using a bash shell (putty) session as `admin', you receive a message referencing a possible Man-In-The-Middle attack stating: "REMOTE HOST IDENTIFICATION HAS CHANGED!" How do you repair this condition? A. Remove the IP address in question from /home/admin/.ssh/known_hosts B. Remove the IP address in question from /root/.ssh/known_hosts C. Remove "admin" from /etc/passwd on the utility node D. Remove "admin_key" key from /home/admin/.ssh /Reference: : QUESTION 113 When using LDAP for Active Directory to access the Avamar Administrator, where are the user passwords maintained? A. Customer Active Directory Server B. Utility node /usr/local/avamar/etc C. Utility node O/S /etc/passwd file

69 D. SSH known_hosts file on the utility node /Reference: : QUESTION 114 What is the recommended command that instructs the EMC Avamar server to redistribute backup data from the most full nodes to the least full nodes? A. avmaint config balancemin=2 --avamaronly B. avmaint config balancemin=0 --avamaronly C. avmaint config balancemin=1 --avamaronly D. avmaint config balancemin=100 --avamaronly /Reference: : QUESTION 115 Which command is used to prevent new client activities from starting on an EMC Avamar server? A. avmaint suspend B. dpnctl stop mcs C. avmaint kill SESSION-ID D. dpnctl stop ems /Reference: : QUESTION 116 Which command is used to convert new Avamar nodes to storage nodes? A. change_nodetype B. avmaint C. avmgr D. dpnctl /Reference: :

70 QUESTION Prior to starting an EMC Avamar node add and rebalance procedure, what should be done first to ensure that the activity can be completed without data loss? A. Perform a full system pre-upgrade health check B. Perform an orderly reboot of all nodes in the grid C. Run 'asktime' to ensure all node clocks are synchronized D. Add the new node names and IPs to the /etc/hosts file /Reference: : QUESTION 118 A customer is running out of capacity on their Avamar Gen4 server with 3.9 TB nodes. They want to add three Gen4 1.3 TB nodes from their test lab. Can these 1.3 TB nodes be repurposed for node additions in this environment? A. No. All new nodes must be of the same capacity as the existing nodes. B. Yes. Three 1.3 TB nodes add up to 3.9 TB and can be added to the Gen4 server with 3.9 TB nodes. C. Yes, if an approved RPQ is available for the customer. D. No. Gen4 1.3 TB nodes cannot be added to a Gen4 1.3 TB multi-node server. /Reference: : QUESTION 119 You are adding new nodes to an EMC Avamar server. You are now ready to join the new nodes to the GSAN. Which command is used? A. start.nodes B. start.dpn C. rebuild.nodes D. avmaint autorestart 46 /Reference: : QUESTION 120 Under which node replacement option do you need to generate a new EMC Avamar license key?

71 A. When swapping disks from a failed utility node to a new node B. When performing a rebuild on an existing utility node C. When performing a rebuild on an existing storage node D. When swapping disks from a failed storage node to a new node /Reference: : QUESTION 121 Your readiness checks show that a customer's Gen4 Avamar server has entered a read-only status. To avoid data loss, which recommended state should the Avamar server be in before you can continue the "Add Node" procedure? A. Known good controlled state B. Read-only state C. Steady state D. Suspended state /Reference: : QUESTION 122 Which document should be approved and available to you at the time of a node addition to a customer's EMC Avamar server? A. SVC Qualifier B. Healthcheck report C. ConnectEMC (SYR) report D. Sales order 47 /Reference: : QUESTION 123 A node has failed on a multi-node EMC Avamar grid and is offline. The customer insists on running backups while the replacement is occurring. What can you tell the customer about the impact of running backups during a node replacement procedure? A. Replacement procedure will take significantly longer with backups running B. Replacement procedure will be unaffected by running backups

72 C. Replacement procedure cannot continue while backups are running D. Replacement procedure will take less time with backups running /Reference: : QUESTION 124 What is the minimum physical memory that needs to be allocated to an EMC Avamar Virtual Edition with 1.0 TB of licensable capacity? A MB B MB C MB D MB Correct Answer: C /Reference: : This question is not valid for Avamar 7 QUESTION 125 What is the minimum physical memory that needs to be allocated to an EMC Avamar Virtual Edition with 2 TB of licensable capacity?

73 A MB B MB C MB D MB Correct Answer: D /Reference: : This question is valid for Avamar 7 as well QUESTION 126 An EMC Avamar Virtual Edition server is created using thin provisioned virtual disks. What effect will this have instead of using thick provisioning? A. Benchmark results will be inaccurate B. Avamar capacity will be reduced C. Disk performance will be faster D. Memory requirements will be smaller /Reference: : For Avamar 7

74 QUESTION 127 If 9 GB is the average amount of data added to an Avamar Virtual Edition (AVE) in a mixed environment each day, what is the minimum recommended size of the AVE? A. 0.5 TB B. 1.0 TB C. 2.0 TB D. 3.3 TB Correct Answer: B /Reference: : QUESTION 128 What is the lowest EMC Avamar Virtual Edition version that will support an average daily change rate of 1.5 GB in a file server environment? 49 A. 0.5 TB B. 1.0 TB C. 2.0 TB D. 3.3 TB

75 /Reference: : QUESTION 129 What is the recommendation for configuring the virtual disks for EMC Avamar Virtual Edition? A. Thick provisioned with eager zeroed B. Thin provisioned with eager zeroed C. Thick provisioned with lazy zeroed D. Thin provisioned with lazy zeroed /Reference: : QUESTION 130 A file server-only environment is backing up data to a 1.0 TB EMC Avamar Virtual Edition server. On average, how much new backup data may be added per day to remain in a steady capacity state? A. 2 GB B. 4 GB C. 6 GB D. 8 GB Correct Answer: B

76 /Reference: : QUESTION 131 How many hours does the benchmark test run in an EMC Avamar Virtual Edition install? A. 6 B. 12 C. 24 D. 36 Correct Answer: C /Reference: : QUESTION 132 Which node configuration is supported by EMC Avamar Virtual Edition? A. Single node B. Multi-node with two storage nodes C. Multi-node with three storage nodes D. Multi-node with three storage nodes and one spare /Reference: : QUESTION 133

77 What is the operating system partition size for an EMC Avamar Virtual Edition server? A. 100 GB B. 60 GB C. 90 GB D. 120 GB /Reference: : A changed from 30 GB to 100GB answer was changed from B to A This question was valid only for Avamar6, below is for Avamar 7 QUESTION 134 What are the requirements for the virtual processor(s) dedicated to EMC Avamar Virtual Edition at all times? A. One 2 GHz virtual processor B. One 4 GHz virtual processor C. Two 2 GHz virtual processors D. Two 3 GHz virtual processors Correct Answer: D /Reference: : This question is not valid for Avamar 7

78 Ref# Avamar-Virtual-Edition-7.0-Installation-Guide.pdf QUESTION 135 What is the purpose of running the EMC Avamar Virtual Edition benchmark process? A. Verify that the performance of the disk storage meets specifications B. Verify that there is enough memory C. Verify that there is enough storage available D. Verify that the CPU on the system is fast enough /Reference: :

79 QUESTION 136 For an Avamar Gen4 single node, how many Ethernet ports are provided? A. 2 B. 4 C. 6 D. 8 Correct Answer: B /Reference: : QUESTION 137 What is the minimum number of EMC Avamar active storage nodes required for a supported RAIN configuration? A. 2 B C. 4 D. 5 Correct Answer: B /Reference: : QUESTION 138 What is considered a CRU (Customer Replaceable Unit) for Avamar Gen4? A. Accelerator Node B. ATI port switch C. 1 Gb Network Interface Cards

80 D. RAM Memory Modules /Reference: : QUESTION 139 Which RAID level is used in an EMC Avamar 7.8 TB single-node server? A. 1 B. 5 C. 6 D. 10 /Reference: : QUESTION 140 When using YAST to set up networking on a Gen4 Avamar node, how do you backspace in a field? A. Ctrl-h B. Ctrl-b C. Backspace D. Ctrl-c /Reference: : QUESTION 141 On a single-node Gen4 EMC Avamar Data Store, what is the optional use of the GB2 port? A. Outgoing replication B. MC and administrative traffic C. High availability D. Connection to the internal switch /Reference: : QUESTION 142 You are installing a single-node Gen4 Avamar Data Store. Which label is on the port that is optionally used to

81 connect the node to the second customer switch for high availability? A. GB1 B. GB2 C. GB3 D. GB4 Correct Answer: C /Reference: : QUESTION 143 Which basic network settings are required when configuring an EMC Avamar node at installation? A. IP address, DNS parameters, subnet, hostname and domain, gateway B. IP address, SMTP server, subnet, hostname and domain, gateway C. IP address, DNS parameters, duplex, hostname and domain, gateway D. IP address, DNS parameters, subnet, MTU size, gateway 54 /Reference: : QUESTION 144 You are checking the network cabling on a multi-node EMC Avamar Gen4 Data Store. Which port should be used to connect the utility node to the first switch? A. GB1 is connected to port 1 on the switch B. GB1 is connected to port 5 on the switch C. GB2 is connected to port 1 on the switch D. GB2 is connected to port 5 on the switch Correct Answer: C /Reference: : QUESTION 145 When configuring basic networking for the storage nodes in a multi-node EMC Gen4 Avamar, which port is used to perform this operation? A. idrac B. GB1 C. GB3 D. GB4