Deploying Exchange Server James Oryszczyn President, JSO Technology LLC 1

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1 Deploying Exchange Server 2010 James Oryszczyn President, JSO Technology LLC 1

2 Flexible and Reliable Provide the flexibility needed to operate a scalable, high performing, and easy to administer messaging infrastructure Delivered in Exchange Server 2007 Improved Installation and deployment experience High Availability through Continuous Replication Simplified management console and command line shell Building on these Investments in Exchange Server 2010 Single platform for High Availability and Disaster Recovery Role-based admin, web-based management, and user self-service Choice of storage hardware from SAN to low-cost DAS options 2

3 Single platform for availability, backup, and recovery Online mailbox moves keep users connected Role-based administration and user self-service Web-based management and remote PowerShell Choice of storage from SAN to low-cost DAS Modular server roles ease deployment 3

4 Deliver Deployment Flexibility Greater Range of Storage Options Through Performance Enhancements Storage Area Network (SAN) Direct Attached w/ SAS Disks Direct Attached w/ SATA Disks JBOD SATA (RAID-less) E2K3 70% reduction in IOPS Smoother IO patterns Resilience against corruption Read IOPS Write IOPS E2K7 E2010 4

5 Requirements to Deploy Exchange

6 Exchange 2010 System Requirements Supported Operating Systems 64-bit edition of Windows Server 2008 Standard with Service Pack 2 (SP2) 64-bit edition of Windows Server 2008 Enterprise with SP2 64-bit edition of Windows Server 2008 R2 Standard 64-bit edition of Windows Server 2008 R2 Enterprise Supported Systems for Exchange Management Tools Windows Vista with SP2 for management tools only installation 64-bit edition of Windows Server 2008 Standard with SP2 64-bit edition of Windows Server 2008 Enterprise with SP2 64-bit edition of Windows Server 2008 R2 Standard 64-bit edition of Windows Server 2008 R2 Enterprise 64-bit edition of Windows 7 6

7 Outlook Requirements Exchange 2010 supports the following versions of Microsoft Office Outlook Outlook 2010 Outlook 2007 Outlook 2003 Entourage 2008 for Mac, Web Services Edition 7

8 Outlook 2003 Notes On clients running Outlook 2003, you may notice that folder updates don't occur automatically in a timely manner. This situation occurs because User Datagram Protocol (UDP) notifications aren't supported in Exchange For more information about resolving this issue, see Knowledge Base article , In Outlook 2003, messages take a long time to send and receive when you use an Exchange 2010 mailbox. However, Outlook 2007 and Outlook 2010 are automatically compatible with this change. Exchange 2010 RTM: Clients running Outlook 2003 don t use RPC encryption, which RPC Client Access requires by default. You will either need to turn off the RPC encryption requirement or configure Outlook 2003 to use RPC encryption. However, Outlook 2007 and later versions are automatically compatible with the change to RPC Client Access because they support RPC encryption by default. For more information, see Understanding RPC Client Access. Exchange 2010 SP1: In Exchange 2010 SP1, the RPC encryption requirement is disabled by default. Any new Client Access Servers (CAS) deployed in the organization will not require encryption. However, any CAS servers deployed prior to Exchange 2010 SP1, or upgraded to Exchange 2010 SP1, will retain the existing RPC encryption requirement setting. 8

9 Server Virtualization Support Microsoft Hyper-V Server 2008 Microsoft Hyper-V Server 2008 R2 VMWARE 4.0 or later with Patch 1 Any third-party hypervisor that has been validated under the Windows Server Virtualization Validation Program. The Exchange guest virtual machine: Is running Microsoft Exchange Is deployed on the Windows Server 2008 with SP2 or Windows Server 2008 R2 operating system. Doesn't have the Unified Messaging server role installed. All Exchange 2010 server roles, except for the Unified Messaging server role, are supported in a virtualization environment. This is due to the real-time response requirements associated with voice communications with the Unified Messaging server role. 9

10 Active Directory Requirements Make sure that the functional level of your forest is at least Windows Server 2003, and that the schema master is running Windows Server 2003 with Service Pack 1 (SP1) or later. No Windows 2000 Domain Controllers Must run domain prep and Forest prep to Prepare the Domain for Exchange 2010 Exchange 2010 Editions and Licenses Standard and Enterprise Big Difference is Enterprise Exchange supports 50+ Mailboxes, Standard supports 5 Standard and Enterprise CAL Enterprise CAL includes Archiving and spam filtering Must buy both the Standard and Enterprise CAL s. They are not an either/or. It is a Standard plus Enterprise 10

11 Exchange 2010 HA Requirements Windows 2008 SP2 or Windows 2008 R2 Enterprise Edition Required Can use the Standard or Enterprise Edition of Exchange Server A SAN or Shared Storage is not required, can run on JBOD (Just a Bunch of Disks) More about this Topic in the next Section 11

12 Exchange 2010 Server Rolls Mailbox Server Holds the Exchange Mailbox data and also Public Folders Hub Transport Handles routing in/out of the Exchange Organization Client Access All access to the Exchange Mailbox Database comes via the Client Access Change from prior Versions of Exchange, they connected directly to the Exchange server database. Why is this? HA is why. We will explain this better later in the presentation Unified Messaging Allows Phone systems to store Voice Messages Edge Transport I do not use this roll, sits in DMZ for Mail routing and spam filtering 12

13 Exchange 2003 to Exchange 2010 Upgrade Exchange 2003 organization must be in Native Mode and Have SP2 installed Exchange 2010 OWA will not Proxy back to Exchange 2003 mailboxes Will need to run OWA in parallel Deploy Exchange 2010 servers in this order: Client Access Hub Transport Unified Messaging Mailbox Move mailboxes from Exchange 2003 to Exchange

14 Exchange 2007 to Exchange 2010 Upgrade Upgrade existing Exchange 2007 servers to Exchange 2007 Service Pack 2 (SP2). Deploy Exchange 2010 servers in this order: Client Access Hub Transport Unified Messaging Mailbox Move mailboxes from Exchange 2007 to Exchange

15 To the Cloud Demo on Installed Exchange 2010 Hub Transport and Mailbox Server 15

16 High Availability 16

17 Outlook (MAPI) client AD site: San Jose OWA, ActiveSync, or Outlook Anywhere Client Access Server Manual activation of remote mailbox server Mailbox server can t co-exist with other roles AD site: Dallas Client Access Server Standby Server SCR DB4 DB5 DB6 CCR #1 Node A CCR #1 Node B CCR #2 Node A CCR #2 Node B SCR managed separately; no GUI DB1 Windows cluster DB1 DB4 Windows cluster DB4 Clustering knowledge required DB2 DB3 DB2 DB3 DB5 DB6 DB5 DB6 Database failure requires server failover

18 Core Architectural Shift Active Manager PAM SAM Database Availability Group DAG Networks Windows Failover Cluster Default Cluster Group Cluster IP Address Cluster Name Cluster Quorum Cluster Database 18

19 Core Architectural Shift Windows Failover Cluster Default Cluster Group Cluster IP Address Cluster Name Cluster Quorum Clustered Mailbox Server (CMS) CMS IP Address CMS Name CMS resources (exres.dll) CMS disk resources Cluster Database Cluster Networks 19

20 Core Architectural Shift Mailbox Server Database Availability Group Mailbox Server Mailbox Server Get- MailboxDatabaseCopyStatus Get- MailboxDatabaseCopyStatus Get- MailboxDatabaseCopyStatus Move- Activ boxDatabase Move- Activ boxDatabase Move- Activ boxDatabase Primary Active Manager Standby Active Manager Standby Active Manager Storage Storage Storage 20

21 Enable Continuous Availability Simplified Mailbox High Availability and Disaster Recovery with New Unified Platform San Jose New York Mailbox Server Mailbox Server Mailbox Server Recover quickly from disk and database failures DB1 DB2 DB3 DB4 DB5 DB1 DB2 DB3 DB4 DB5 DB1 DB2 DB3 DB4 DB5 Evolution of Continuous Replication technology Easier than traditional clustering to deploy and manage Allows each database to have 16 replicated copies Provides full redundancy of Exchange roles on as few as two servers Capabilities of CCR and SCR combined into one platform 21

22 Continuous Availability Limit User Disruption During Mailbox Moves and Maintenance Client Client Access Server Mailbox Server 1 Mailbox Server 2 Users stay connected and productive as mailboxes are moved between servers Send messages Receive messages Access entire mailbox Administrators can perform migration and maintenance during regular hours 22

23 Exchange Server 2010 High Availability Fundamentals Database Availability Group A group of up to 16 servers hosting a set of replicated databases Wraps a Windows Failover Cluster Manages servers membership in the group Heartbeats servers, quorum, cluster database Defines the boundary of database replication Defines the boundary of failover/switchover Defines boundary for DAG s Active Manager Mailbox Server 1 Mailbox Server 2 Mailbox Server 3 Mailbox Server 4 Mailbox Server 16 23

24 Exchange Server 2010 High Availability Fundamentals Server Unit of membership for a DAG Hosts the active and passive copies of multiple mailbox databases Executes Information Store, CI, Assistants, etc., services on active mailbox database copies Executes replication services on passive mailbox database copies Mailbox Server 1 Mailbox Server 2 Mailbox Server 3 DB1 DB2 DB3 DB4 DB1 DB2 DB3 DB4 24

25 Exchange Server 2010 High Availability Fundamentals Mailbox Database A database has 1 active copy active copy can be mounted or dismounted Maximum # of passive copies == # servers in DAG 1 Mailbox Server 1 Mailbox Server 2 Mailbox Server 3 DB1 DB2 DB3 DB4 DB1 DB2 DB3 DB4 DB1 25

26 Exchange Server 2010 High Availability Fundamentals Mailbox Database (Continued) ~30 seconds database Server failover/switchover involves moving all active databases to one or more other servers Database names are unique across a forest Defines properties relevant at the database level» Globally Unique Identifier (GUID): a Database s unique ID» EdbFilePath: path at which copies are located» Servers: list of servers hosting copies 26

27 Exchange Server 2010 High Availability Fundamentals Continuous Replication Continuous replication has the following basic steps: Database copy seeding of target Log copying from source to target Log inspection at target Log replay into database copy 27

28 Exchange Server 2010 High Availability Fundamentals Database Seeding There are three ways to seed the target instance: Automatic Seeding Requires 1 st log file containing CreateDB record Updat boxDatabaseCopy cmdlet Can be performed from active or passive copies Manually copy the database 28

29 Exchange Server 2010 High Availability Fundamentals Log Shipping Log shipping in Exchange Server 2010 leverages Transmission Control Protocol (TCP) sockets Supports encryption and compression Administrator can set TCP port to be used Replication service on target notifies the active instance the next log file it expects Based on last log file which it inspected Replication service on source responds by sending the required log file(s) Copied log files are placed in the target s Inspector directory 29

30 Exchange Server 2010 High Availability Fundamentals Log Inspection The following actions are performed to verify the log file before replay: Physical integrity inspection Header inspection Move any Exx.log files to ExxOutofDate folder that exist on target if it was previously a source If inspection fails, the file will be recopied and inspected (up to 3 times) If the log file passes inspection it is moved into the database copy s log directory 30

31 Exchange Server 2010 High Availability Fundamentals Incremental Resync Incremental reseed scenario Active DB1 on server1 fails Passive DB1 on server3 takes over service Sometime later, failed DB1 on server1 comes back as passive contains inconsistent data Make DB1 on server1 consistent with new active Transaction logs of active and failed copy are compared to find divergence point Determines from logs the database pages that changed after divergent point Copies database pages from active to failed copy, then play new logs, until insync Replaces Exchange Server 2007 s Lost Log Resilience (LLR) Mailbox Server 1 Mailbox Server 2 Mailbox Server 3 LLR is set to 1 DB1 X DB1 DB

32 Exchange Server 2010 HA Goals Reduce complexity Reduce cost Native solution - no single point of failure Improve recovery times Support larger mailboxes Make High Availability Exchange deployments mainstream! 32

33 Exchange Server 2010 High Availability Fundamentals Backups Streaming backup APIs for public use have been cut, must use Volume Shadow Copy Service (VSS) for backups Backup from any copy of the database/logs Always choose Passive (or Active) copy Backup an entire server Designate a dedicated backup server for a given database Restore from any of these backups scenarios Mailbox Server 1 Mailbox Server 2 Mailbox Server 3 Database Availability Group DB1 DB1 DB1 DB2 DB2 DB2 DB3 DB3 DB3 VSS requestor 33

34 Multiple Database Copies Enable Backupless Configurations Site/server/disk failure Archiving/compliance Recover deleted items Exchange Server 2010 HA archive Extended/protected dumpster retention Database Availability Group Mailbox Server 1 Mailbox Server 2 Mailbox Server day lag copy DB1 DB1 DB1 DB2 DB2 DB2 DB3 DB3 DB3 X 34

35 Backupless Configuration JSO does not recommend the Backup less configuration Database corruption could destroy your Exchange database If you do not have archiving, restoring Individual s could be a challenge If you have your servers in the same Datacenter, a natural disaster could destroy your Exchange 35

36 JSO Approved Backup Solution Unitrends Already Supports Exchange Server2010 Offers individual restore without using Microsoft s API (uses On track Power Control) Also provides Bare Metal restore, allowing for quick Exchange server recovery from a crash. Can restore to different hardware Can also aid with server Virtualization. 36

37 To the Cloud Setup HA in Exchange

38 Client Access Role 38

39 Client Access Server Agenda Overview of Client Access Server (CAS) functions Remote procedure call (RPC) Client Access Service Exchange Web Services (EWS) Offline Address Book Functionality Topology scenarios Secure Sockets Layer (SSL) and certificate considerations 39

40 What Client Access Servers Do Client Access Server Microsoft Internet Explorer, Mozilla Firefox, Safari Mobile Devices Outlook, Entourage, LOB apps Outlook, Entourage, Line-of-Business (LOB) apps, Mobile Devices Outlook from the Internet Thunderbird Outlook from the intranet Outlook OWA & ECP EAS EWS Autodiscover Offline Address Book download Outlook Anywhere POP/IMAP RPC Client Access Service RPC Lightweight Directory Access Protocol (LDAP) Proxied HyperText Transfer Protocol (HTTP) Mailbox Server Domain Controller Other CAS Server 40

41 Store Access Paths All Roads Go Through the Client Access Server Exchange Components (EWS, ActiveSync, Unified Messaging (UM), Outlook Web App (OWA), Mailbox Agents, Transport Agents) Outlook, other Messaging Application Programming Interface (MAPI) clients Entourage, 3 rd party apps Outlook, other MAPI clients Exchange Components (EWS, ActiveSync, UM, OWA, Mailbox Agents, Transport Agents) Middle Tier Exchange Business Logic Entourage, 3 rd party apps Middle Tier MAPI, RFR** & NSPI*** RPC Exchange Business Logic Exchange Core Business Logic Mailbox MAPI RPC Store DAV* Mailbox MAPI RPC Store Request for Response Distributed Authoring and Versioning (DAV) 41

42 Exchange Server 2010 Middle Tier What is it? New services in Exchange Server 2010 that reside on CAS Restrict all Outlook data access to a single common path by migrating Mailbox and Directory endpoints to CAS What it handles: Outlook data connections go to RPC Client Access Service on CAS instead of connecting to Mailbox servers Address Book Service on CAS replaces DSProxy interface, handles all Outlook Directory connections Public folder connections connect directly to the Mailbox server, but through RPC Client Access Service running on backend Outlook Clients Exchange CAS Array MBX GC 42

43 RPC Client Access Service The Why Provides a better client experience during switchovers/failovers When a Mailbox (MBX) server fails over, Outlook client will only see ~30 sec disconnect, as compared to 1-Time to Live (TTL) min before Uses the same business logic for Outlook and CAS clients Data validation, especially Calendar logging + repair Compliance Archive mailbox infrastructure Content/body conversion Scaling mailbox connections More concurrent connections / mailboxes per Mailbox server Reduces code and client logic in Exchange Store process for increased reliability 43

44 Middle Tier Mailbox Data Validation and Compliance Client saves item (new or existing) MAPI, RFR & NSPI RPC Logic Exchange Core Business Logic MAPI RPC Store Exchange Business Exchange Components (EWS, ActiveSync, UM, OWA, Mailbox Agents, Transport Agents) On Save: If it s a meeting message, make a copy in the Calendar Logging folder If the Save is a Delete, make a copy in the Recoverable Items folder New Calendar Validation and Compliance features require acting on items as they are saved Calendar Logging capture the state of items as they are saved, for diagnostics and repair Dumpster keep deleted items around so they may be restored Retention keep deleted items around for per retention policy Can support these features for all clients without any client changes using Middle Tier magic 44

45 Client Access Scaling Mailbox Connections Outlook Anywhere Clients 60K outbound connections/cas IP (W2K8) CAS MBX 60K outbound connections/mbx server GC Exchange Server K connections/mbx server Outlook Clients MBX Exchange Server

46 RPC Client Access Service How Directory Referral Connections Work 1. Outlook calls get Address Book server application program interface (API) CAS queries AD DS a. Mailbox location (AD DS site) b. Mailbox version c. RpcClientAccessServer property of mailbox database 3. CAS tells Outlook which CAS server or array should be used for directory requests AD DS Site 1 CAS AD DS Site 2 CAS Outlook connects to the appropriate CAS MBX 2010 GC MBX 2010 GC If mailbox is moved back to 2003/2007, CAS will redirect the client to the mailbox server so that it can provide a referral to a global catalog server Otherwise, all legacy mailboxes will get directory referrals from mailbox server 46

47 RPC Client Access Array Point of Failure Failure Mitigation MDB (Data access) Create DAGs* that have multiple copies of the MDB MBX Server (Data access) Create DAGs that span multiple servers CAS Server (Outlook RPC access) Create Client Access array * DAG = Database Availability Group CAS MBX Prevents single point of failure for RPC Client access Enables DB-level high availability Requirements: Load balancer Windows NLB, any software LB for small deployments Any hardware LB for larger deployments A10 Networks make a Great Load Balancer User affinity (source IP or otherwise) Session-based clients Load Balancer Exchange CAS Array 47

48 Load Balancing and Server Affinity Client OWA and EWS require server affinity During a session, all client requests must go to the same CAS server Other CAS services do not require client-server affinity Client IP-based load balancing Cookie-based load balancing Poor man s solution Windows Network Load Balancing (NLB) Affinity fails if client IP changes during session Does not work behind reverse proxies like Internet Security and Acceleration (ISA) since the client IP is masked by the reverse proxy ISA 2006 and Unified Access Gateway (UAG) can do client IP LB for servers behind it No hassle solution ISA 2006, UAG or 3 rd party Load Balancers UAG array CAS array NLB using Client IP or 3 rd party cookie LB UAG cookie LB 48

49 Microsoft Recommends a Hardware Load Balancing for a CAS Array JSO recommended solution for Exchange 2010 CAS Load Balancing is A10 networks AX Series A10 includes all Features in their products, no add-on license fee s Works well with Microsoft and numerous additional products Can use with other products besides Microsoft Exchange 2010 If interested in a demo, contact us 49

50 Storage 50

51 Storage Exchange storage background Disk storage technology Microsoft Exchange Server 2010 storage architecture Store innovations Extensible Storage Engine (ESE) database innovations Exchange Server 2010 storage design Summary 51

52 Exchange Server 2007 Storage Background Significant innovation in Exchange Server 2007 Reduce storage input/output (I/O) (70%) Use large amounts of memory (64 bit) Increased page size (4 kilobyte (KB) -> 8 KB) Lower storage costs Support large mailboxes (> 1 gigabyte (GB)) Provide fast search (CI) Continuous replication (log shipping) High Availability (HA) + fast recovery Eliminate single points of failure 52

53 Disk Technology Futures SATA (3.5") Drive Capacity (GB) 750 2,000 8,000 RPM 7.2K 7.2K 10k Transfer Rate (Mb/sec) 930 2,000 5,000 Read Seek Time (ms) FC/SAS (3.5 ) Drive Capacity (GB) ,400 RPM 15K 15K 15K Transfer Rate (Mb/sec) 975 2,000 4,000 Read Seek Time (ms) Disk capacity trend predicted to continue Sequential throughput increasing linearly based on areal density (2010 Serial ATA (SATA) = 250 megabytes (MB)/sec) Random I/O performance not expected to improve substantially 53

54 Random vs. Sequential Disk I/O Random I/O Disk head has to move to process subsequent I/O Head movement = High I/O latency Seek Latency limits I/O per second (IOPS) Sequential I/O Disk head does not move to process subsequent I/O Stationary head = low I/O latency Disk revolutions per minute (RPM) speed limits I/O per second (IOPS) Disk Head 7.2K SATA Disk (20ms Latency) Random = 50 IOPS Sequential = +300 IOPS 54

55 FLASH/Solid State Drive (SSD): Exchange NAND Server 2010 Scenarios Flash best utilized by Exchange Server 2010 (RC) when used as a cache within storage stack PCM* HBA / RAID NAND Enterprise SAN Array *Pulse Code Modulation (PCM) Hybrid HDD Exchange Server 2010 Mailbox Server ** Solid State Drive SATA SSD** 55

56 Exchange Server 2010 Storage I/O Reduction Sequential I/O Storage Design Flexibility Vision Large, Fast, Lowcost Mailboxes SATA/Tier 2 Disk Optimization RAID-less Storage (JBOD*) 56

57 I/O Reduction: Store Schema Changes Store schema = the way the store organizes data in the ESE Database Exchange Server 2010: One simple theme Move away from doing many, random, small size, disk I/Os to doing fewer, sequential, large size, disk I/O's Significant Benefits Fast/efficient Outlook Web App (OWA)/Outlook Online Mode End user viewing for cold states/first time view creation Calendar operations Search performance Outlook cached mode/exchange Active Sync OST sync = sequential I/O Exchange ActiveSync Server (EAS) sync = sequential I/O Server management Move mailbox Content Index Crawls 57

58 I/O Reduction: Store Table Architecture Per Database Per Folder Mailbox Table Folders Table Message Table (Msg) Attachments Table Message/Folder Table (MFT) xchange rver 2007 Jeff s Mbx Ann s Mbx Jeff:Inbox Ann:Drafts Joe:Msg10 Jeff:Msg32 Jeff:Excel.xls Ann:Pic.bmp Joe:Inbox:H1 Joe:Inbox:H2 Joe s Mbx Joe:Unread Ann:Msg180 Joe:Help.doc Joe:Inbox:H3 Secondary Indexes used for Views Per Database Per Mailbox Per View Exchange Server 010 (RC) Mailbox Table Jeff s Mbx Ann s Mbx Folders Table Joe:Inbox Joe:Drafts Message Header Table Joe:H10 Joe:H302 Body Table Joe:Msg10 Joe:Help.doc View Tables (e.g. From) Joe:H920 Joe:H302 Joe s Mbx Joe:Unread Joe:H920 Joe:Msg302 Joe:H10 58

59 Store Schema Changes: Physical Contiguity Exchange Server B+ Tree Many, small size, I/Os (1 per 8K page) Exchange Server 2010 (RC) 1078 B+ Tree Fewer, larger size, sequential I/Os 59

60 I/O Reduction: Store Schema Elements How do you move from random I/O to sequential I/O? Element Exchange Server 2007 Exchange Server 2010 (RC) Physical Contiguity (ESE) Poor physical contiguity of leaf pages hence many, small size, IOs (1 for each page) Excellent physical contiguity of leaf pages so fewer, large size IOs, spanning N pages (N 100) Logical Contiguity (Store) Headers for each folder kept in separate table so many, small size, IOs spread over many tables Headers for an entire mailbox kept in a single table hence fewer, large sized, IOs on a single table Temporal Contiguity (View) All views and indexes updated each time a mail is delivered so many, small size, IOs spread over time Views and indexes updated only when they are accessed by user so fewer, large sized, IOs done together 60

61 I/O Reduction: Maintain Contiguity Over Time New Database Maintenance Architecture: ESE Function Exchange Server 2007 Service Pack 1 (SP1) Exchange Server 2010 Cleanup (deleted items/mailboxes) Space Compaction Maintain Contiguity (defragmentation) Cleanup performed during Online Defrag (OLD) which occurs during Online Maintenance (OLM) time window Database is compacted and space reclaimed during Online Defrag (OLD) N/A: Contiguity is compromised by space compaction Cleanup performed at run time (when hard delete occurs) happens during Store dumpster cleanup (OLM), pages are zeroed by default Database is compacted and space reclaimed at runtime auto-throttled Database is analyzed for contiguity and space at run time and is defragmented in the background (B+Tree Defrag/OLD2) auto-throttled Database Checksum When configured, ½ of OLD maintenance window reserved for sequential scan (Checksum), manual throttle active DB copy only Two options (both Active and Passive copies): 1. Run DB Checksum in the background 24x7 (default). Sequential I/O 2. Run DB Checksum during OLM window. Sequential I/O Database B+Tree Defragmentation (aka OLD2): Background/throttled process that maintains space and contiguity of database tables 61

62 I/O Reduction: Database Contiguity Results Exchange Server 2007 Message Header Table (aka MFT) FRAGMENTED DB Page Numbers Random deletes at the tail Exchange Server 2010 Message Header Table (aka MsgHeader) CONTIGUOUS *Production/Dogfood database analysis Blue = contiguous (good) Red = fragmented (bad) 62

63 Mitigate DB Space Growth: Database Compression Problem: Store Schema change, space hints, B+Tree Defrag and 32 KB page size combine to increase DB file size by 20% Solution: Growth is 100% mitigated by Database Compression Targeted compression for message headers and text/html bodies (7bit/Express) DB File Size Comparison DB Space Analysis Counts E2K7 SP1 E2010 Mailbox Count Tables Secondary Indexes Pages Msg Views Used Pages (%) 85.7% 86.7% 0.50 Available Pages (%) 14.3% 13.3% Msg Table (% space) 84.9% 80.0% 32KB Pages 0.00 E2K7/RTF E14/RTF E14/Mix E14/HTML 1 Database, 750 x 250MB mailboxes RTF = RTF Compressed, Mix = 77% HTML, 15% RTF, 8% Text Avg. Message size = ~50KB 63

64 Putting It All Together: Mailboxes/Disk Mailboxes/Disk (7.2K SATA) +4X Mailboxes/Disk! Exchange Server 2007 Exchange Server 2010 (Beta) 250 MB Mailbox Size, 3MB DB Cache/user, 12 x 7.2k SATA disks (DB/Logs on same spindles), Loadgen Outlook 2007 Online Very Heavy Profile, measured at <20ms RPC Average latency 64

65 Exchange Server 2010 HA Storage Design Flexibility SAN DAS (SAS) DAS (SATA) JBOD (SATA) HA = Shared Storage Clustering +1.0 IOPS/Mailbox K 146GB FC Disks RAID10 for DB & Logs Dedicated Spindles Multi-path (HBA s, FC Switches, SAN array controllers) Backup = Streaming off active Fast Recovery = Hardware VSS (Snapshots/Clones) HA = CCR.33 IOPS/Mailbox GB 10K SAS Disks RAID5 for DB RAID10 for Logs SAS Array Controller (/w BBU) Backup = VSS Snapshot Fast Recovery = CCR HA = DAG (2 DB copies).11 IOPS/Mailbox 3.5 2TB 7.2K SATA/SAS Disks RAID10 for DB & Logs SAS Array Controller (/w BBU) Backup = Optional/VSS Fast Recovery = Database Failover HA = DAG (3+ DB copies).11 IOPS/Mailbox 3.5 2TB 7.2K SATA/SAS Disks 1 DB = 1 Disk SAS Array Controller (/w BBU) Backup = Optional/VSS Fast Recovery = Database Failover More options to reduce storage cost 65 65

66 Exchange Server 2010 Storage Requirements/Best Practices Storage Guidance Stand Alone Exchange Server (RC) 2010 HA (2 copies) Storage Type Disk Type RAID Exchange Server 2010 (RC) HA (3+ copies) Direct attached storage (DAS), Storage Area Network (SAN) (Fibre Channel, iscsi) Serial Attached SCSI (SAS), Fibre Channel, Serial ATA (SATA), SSD Redundant Array of Independent Disks (RAID) recommended RAID Type RAID-1/0, RAID-5, RAID-6 JBOD DB/Log Isolation Best Practice Not required Windows Disk Type Partition Type Partition Alignment File System NTFS Allocation Unit Size Encryption Support Basic (recommended), Dynamic RAID optional GUID Partition Table (GPT) (recommended), Master Boot Record (MBR) Windows 2008 Default (1 MB) NT File System (NTFS) 64 KB for both database and log volumes Outlook Protection Rules, Bitlocker 66 66

67 Summary Exchange Server 2010 store has Reduced DB IOPS by +70%...again! Optimized for large mailboxes (+10 GB) and 100K item counts Optimized for large/slow/low-cost disks (SATA/Tier2) Made JBOD/RAID-less storage a viable option Enables unmatched storage flexibility to push storage Capex costs down 67

68 Mailbox and Administration Improvements 68

69 Trends IT organizations need to Maximize efficiency Reduce cost The annual cost of helpdesk support staff for systems with 7,500 mailboxes is approximately $20/mailbox. This cost goes up the smaller the organization. ( Support Staff Requirements and Costs: A Survey of 136 Organizations, Ferris Research, June 2008). 69

70 Simplify Administration Empower Specialist Users to Perform Specific Tasks with Rolebased Administration Compliance Officer Human Resources Help Desk Staff Conduct Mailbox Searches for Legal Discovery Update Employee Info in Company Directory Manage Mailbox Quotas 70

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