Compellent Storage Center
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1 Compellent Storage Center SAN-Based Backup and Recovery with Microsoft Data Protection Manager (2007/2010) and Compellent Storage Center Compellent Corporate Office Compellent Technologies 7625 Smetana Lane Eden Prairie, Minnesota
2 Contents Contents... 2 Introduction... 3 Audience... 3 Customer Support... 3 Disclaimers... 3 General Syntax... 3 Document Revision... 3 Overview of Microsoft Data Protection Manager... 4 Overview of the Compellent Storage Center... 5 DPM DPM Process Overview... 6 DPM Initial Replication and Recovery Process Utilizing Compellent Storage... 7 DPM Process Utilizing SAN-Based Backup & Recovery DPM 2007 Requirements Protected Computers DPM 2007 Protectable and Recoverable Data DPM DPM 2010 Overview Compellent VSS Hardware Provider Support CSV Backups via Hardware Snapshot with DPM Hyper-V Protection Prerequisites Compellent VSS Hardware Provider Configuration Hyper-V CSV Backup Process with Compellent VSS Hardware Provider Protecting Non-Virtualization Workloads with SAN-Based Backup Hardware Requirements Protected Computer Requirements DPM 2007/2010 Configuration Best Practices Performance Benefits of SAN-Based Recovery Appendix PowerShell Script: CreateShadowCopy.ps Compellent Technologies Page 2
3 Introduction Audience Customer Support Disclaimers General Syntax The target audience for this white paper is Exchange administrators, system administrators, storage administrators, DPM administrators, and architects who analyze, design, and maintain robust storage systems. Readers should be familiar with Microsoft Exchange Server, Microsoft Windows Server 2003, Microsoft Data Protection Manager, and Compellent Storage Center. Compellent provides live support EZSTORE ( ), 24 hours a day, 7 days a week, and 365 days a year. For additional support, Compellent at support@compellent.com. Compellent responds to s during normal business hours. Information in this document is subject to change without notice Compellent Technologies. All rights reserved. Reproduction in any manner without the express written permission of Compellent Technologies is strictly prohibited. Trademarks used in this text are property of Compellent Technologies, or their respective owners. Item Menu items, dialog box titles, field names, keys Mouse click required User Input User typing required Website addresses addresses Convention Bold Click: Monospace Font Type: info@compellent.com Document Revision Date Revision Description 1/21/ Release 7/6/ DPM 2010 guidance added Compellent Technologies Page 3
4 Overview of Microsoft Data Protection Manager Data Protection Manager (DPM) is a key member of the Microsoft System Center family of management products, designed to help IT professionals manage their Windows environment. DPM is the new standard for Windows backup and recovery delivering continuous data protection for Microsoft application and file servers using seamlessly integrated disk and tape media. DPM enables rapid and reliable recovery through advanced technology for enterprises of all sizes. Today s business climate is more challenging than ever and businesses are under constant pressure to lower costs while improving overall operational efficiency. In short, businesses are being asked to do more for less. One way that enterprises of all sizes can reduce costs and improve business agility is by changing the way data protection is managed. DPM provides the following additional benefits: Continuous Data Protection DPM captures data changes as they occur in real-time and synchronizes every 15 minutes to ensure Windows data and user productivity are protected unlike other legacy methods that backup data only once a day so that business critical data can be protected at all times. Lossless Restores for Applications By seamlessly integrating a point-in-time database restore with the existing application logs, DPM delivers lossless recovery of Microsoft Exchange, SQL, and SharePoint servers without the need for constant replication or synchronization. Superior Application Integration for Exchange Server, SQL Server, and SharePoint DPM offers integrated support for Exchange Servers 2003 and 2007 with advanced cluster configurations, shorter SQL Server backup windows without the need for compression, and integrated restores for SharePoint. DPM also provides one touch application restores with zero data loss. Rapid Recovery Backing up data to disk provides the fastest way to recover data that s been lost due to user error or software and hardware corruption. With DPM, recovering information is as simple as browsing a share and copying directly from the DPM platform to the production server within seconds. By restoring data from disk, DPM enables customers to recover data in minutes, versus the hours it takes to recover from tape. Reliable Recovery DPM leverages disk-based backup to provide the highest level of reliability versus traditional and often unpredictable tape backup methods. All of the various failure points for tape backup, including corrupt indexes, broken media, misplaced cartridges, and human error are all avoided by relying on disk storage as the primary restoration medium, while still leveraging tape for long-term archival storage. Seamless Disk and Tape Integration DPM transparently leverages both disk and tape mediums to enable fast, multiple points-in-time-per-day restores from disk, while ensuring long term retention and off site portability with disk. Unified Protection Policies Across Data Types DPM allows protection to be configured across heterogeneous applications and file-sharing platforms with a single policy. This allows you to manage logical groupings of data from a single UI delivering Exchange, SQL, SharePoint and File data mixed, within a single policy, to any combination of disk and tape protection. Compellent Technologies Page 4
5 SLA-driven Backup Process Protection policies are based on intent and SLAs, creating a layer of abstraction that insulates the user from the often confusing process of scheduling individual backup jobs in order to meet an overall SLA. Block Filter With an efficient disk infrastructure and reduced network traffic, DPM s volume filter changes how backups are achieved and maintained: The volume of full backups is reduced by as much as 90 percent, saving disk space and reducing backup time from hours to minutes. Express full backups and an enhanced network throttling mechanism allows for more granular management of bandwidth. Overview of the Compellent Storage Center Compellent s Storage Center is an enterprise class storage area network (SAN) that significantly lowers capital expenditures, reduces storage management and administration time, provides continuous data availability and enables storage virtualization. Storage Center s industry-standard hardware and sophisticated software manage data at the block-level, maximizing utilization, automating tiered storage, simplifying replication and speeding data recovery. A Modular Hardware Design The hardware design consists of industry standardbased clustered controllers providing automatic failover. Compellent can seamlessly connect to any open-systems server without the need for server side agents. Organizations can mix and match Fibre Channel and iscsi server connectivity, and disk enclosures support any external interface and disks based on Fibre Channel, Mid-Tier Fibre Channel, or Serial ATA. Powerful Suite of Software Storage Center offers a powerful suite of enterprise capabilities to manage data differently. Building on Compellent s Dynamic Block Architecture, Storage Center software intelligently optimizes data movement and access at the block-level to maximize utilization, automate tiered storage, simplify replication and speed data recovery. Intuitive, Unified Interface A centralized management interface streamlines administration and speeds common storage management tasks. The interface features a point-and-click wizard-based setup and management, comprehensive Phone Home capabilities, automatic notification when user-defined capacity thresholds are reached, and advanced storage consumption and chargeback reporting. Compellent s Enterprise Manager further simplifies SAN management by providing comprehensive monitoring of all local and remote Storage Center environments. Enterprise Manager allows you to gain better insight into your Storage Center deployments and reduces planning and configuration time for remote replications. Compellent Technologies Page 5
6 DPM 2007 DPM Process Overview Data Protection Manager (DPM) helps you manage the process of protecting and recovering data on the file and application servers in your network. This topic describes the high-level steps you need to perform to successfully protect and recover data in the DPM environment. Protecting data As illustrated in Figure 1, the high-level process used to protect data involves the following steps: 1. You select data sources on a server that you want to protect whether it is an application server or a file server. 2. To start protecting data, DPM creates a full copy (referred to as a replica) of the selected data sources on the DPM server. 3. To continue protecting data, DPM synchronizes each replica with the data sources on a recurring schedule. When a replica is updated, it replaces the previous replica. 4. To support data recovery, DPM creates point-in-time copies (referred to as recovery points) of the replica on a recurring schedule. DPM maintains up to 64 recovery points for each replica. DPM Server Replica Created Shadow Copy Created Updates File Server Current Replica Figure 1 - Protection Recovering data As illustrated in Figure 2, the high-level process for recovering data involves the following steps: 1. You select the version of the data that you want to recover from the recovery points on the DPM server. 2. DPM restores a copy of the selected data to its point of origin on the server or to an alternate destination that you specify. Compellent Technologies Page 6
7 DPM Server Shadow Copies Figure 2 Recovery File Server DPM Initial Replication and Recovery Process Utilizing Compellent Storage In this scenario, a single dynamic volume (sized accordingly) is presented from the Compellent Storage Center to the DPM Server which uses the volume for the recovery points (shadow copies). It is important to note that the transfer of backup data from the protected server to the DPM Server occurs over the local area network (LAN). Agent Configuration 1. If you have not done so already, install a DPM Server. This server must be a member of a domain as do the other servers in which it will protect. 2. Open the Microsoft DPM Server console and install the DPM agent on the server that you want to protect. (Management > Install ) The server will then reboot. Storage Pool Configuration 1. Using the Compellent Storage Center web administration interface, create a new volume to be used in the storage pool and will contain the recovery points for DPM and its protected servers. Map this new volume up to the DPM server. NOTE: This volume should be at least two times the size of the total amount of data in which you plan to protect. 2. Open the Disk Management MMC on the DPM server and rescan disks. When the newly created disk appears, when the dialog appears, initialize the disk. Do not create any partitions on the new disk at this time. Compellent Technologies Page 7
8 3. Back in the DPM console, at the top of console, click on Management, Disks tab, and then Add. 4. Select the new disk under Available Disks, click Add, then OK. 5. DPM will inform you that it is going to convert the selected disks to dynamic. Click Yes. 6. The disk is now assigned as a DPM Storage Pool disk. Compellent Technologies Page 8
9 Protection Group Configuration The protection group contains the server(s) that will be backed up. You can have multiple protection groups containing different types of servers and applications. 1. In the DPM console, at the top, click on Protection, then Create Protection Group. 2. Select the server(s) and the objects that you want to be included in the protection group. Click Next. 3. Name the protection group something that describes what it is protecting. Accept the default for the protection method. Click Next. 4. If you are protecting an Exchange Server, you will have the option to run the ESEUTIL integrity check. Otherwise, you will see the wizard dialog that will allow you to specify your short-term recovery goals. Click Next. Compellent Technologies Page 9
10 5. Review the storage pool disk space allocated for the protection group. No changes should be necessary here. Click Next. 6. To protect the data you have selected, an initial copy of the data must be sent to the DPM server. This can be completed automatically over the network using the default setting. Click Next. Compellent Technologies Page 10
11 Recovery 7. Review the settings summary, and then click Create Group. This will create and configure the new protection group based on the settings you have selected. NOTE: The DPM server will configure the necessary partitions on the dynamic disk and then start to replicate across the network. This process will attempt to use all available network bandwidth of the DPM and protected server(s). This initial process should be completed only during non-peak hours to reduce the impact on the production environment. The recovery process can be network intensive as data is copied from the DPM server back to the protected server. During this time, the DPM server will attempt to utilize as much of the NIC resources as possible on both the DPM server and protected server as indicated below. DPM does also offer bandwidth throttling capabilities. To recover data, follow these steps: Compellent Technologies Page 11
12 1. In the DPM Server console, at the top, click on Recovery. Expand the tree and in the left pane, select the object that contains the data you want to recover. 2. Next, from the lower right panel, select the recoverable item you want to recover. 3. From the Recovery Time dropdown, select the recovery point you wish to restore. 4. On the right side, Click Recover. 5. Follow the Recovery Wizard and choose the appropriate settings for your recovery. DPM Process Utilizing SAN-Based Backup & Recovery In this scenario, snapshots or replays of the volumes from the protected server are used as recovery points on the DPM server. This process leverages Compellent Storage Center Data Instant Replay and eliminates the amount of network traffic and utilization otherwise normally required. For this scenario, we will be using a Windows Server running SQL Server Agent Configuration 1. If you have not done so already, install a DPM Server. This server must be a member of a domain as do the other servers in which it will protect. 2. Open the Microsoft DPM Server console and install the DPM agent on the server that you want to protect. (Management > Install ) The server will then reboot. Recovery Point Volume Configuration 1. Using the Compellent Storage Center web administration interface, create a new volume to be used in the storage pool and will contain the recovery points for Compellent Technologies Page 12
13 DPM and the protected server that will use the SAN-based backup. Map this new volume up to the DPM server. NOTE: This volume should be at least two times the size of the total amount of data in which you plan to protect. 2. Open the Disk Management MMC on the DPM server and rescan disks. When the newly created disk appears and the dialog appears, initialize the disk, format, and assign a drive letter. Protected Server Volume Setup This section describes the overall process of taking a replay of the protected volumes and assigning them to the DPM server. 1. In the Compellent Storage Center web interface, take a replay of the volume(s) that will be protected. (right-click on the volume, click Create Replay) 2. Perform a Local Recovery of the replay from each of the protected volume(s) and map to the DPM server. Compellent Technologies Page 13
14 3. On the DPM server, assign a drive letter or mount point to the local recovery volumes (replays) that have been mapped. 8. Open the DPM Administrator Console. At the top, click on Protection, then Create Protection Group. 4. Select the server and SQL database that you want to protect. Compellent Technologies Page 14
15 5. Name the protection group something that describes what it is protecting. Accept the default for the protection method. Click Next. 6. Specify your short-term recovery goals. Click Next. 7. Review the storage pool disk space allocated for the protection group. For DPM 2010, uncheck both checkboxes, and then click the Modify button in the disk space allocation dialog. DPM 2007 DPM Under Storage Type, choose Custom Volume. Select the database replay volume as the Replica Volume and the recovery point volume that was created (in the Recovery Point Volume Configuration ) as the Recovery Point volume. NOTE: Be sure that Do Not Format is selected for the custom volume. Also, the dialogs between DPM 2007 and DPM 2010 are different. Use caution when making the selections. Compellent Technologies Page 15
16 DPM 2007 DPM Once you have configured the disk allocation, click OK. 10. Click Next; leave the default replica creation method as Manual which is the only option available. Then click Create Group. 11. Open Windows Explorer and browse to: DPM 2007: C:\Program Files\Microsoft DPM\DPM\Volumes\Replica\computer_name\SQLServerWriter\ database_name DPM 2010: C:\Program Files\Microsoft DPM\DPM\Volumes\Replica\computer_name\SQLServerWriter\ VOL_GUID 12. Manually move the protected SQL database file(s) from the replica database volume to the folder structure created by the DPM Data Protection wizard. (The folder name that resembles a GUID contains the Full folder) Compellent Technologies Page 16
17 Recovery 13. In the DPM Administrator Console, under the Protection tab, select the protection group and the object you just moved the files for, right-click and select Perform Consistency Check The recovery process when configured will use a SAN-based recovery which relies on the availability of VSS hardware snapshots. To recover data, follow these steps: 1. Run the CreateShadowCopy.ps1 script which is included with the installation of Data Protection Manager and is available at C:\Program Files\Microsoft DPM\DPM\bin\. (If you are unable to locate the script, you can copy its contents from the appendix of this document.) 2. From the Compellent Storage Center web interface, take replays of the replica volumes and the recovery point volume mapped to the DPM server. 3. Perform a Local Recovery of each of the replica and recovery point volume replays and map them to the protected server. Compellent Technologies Page 17
18 4. On the protected server, start Disk Management and rescan for disks and then assign a drive letter or mount point to each new disk from the replays that were mapped to the server. 5. From the DPM Administrator Console, select the Recovery tab. 6. Drill down through the tree to find the database that you want to recover and select it. 7. Follow the Recovery wizard to select your options including the recovery type, what state the database should be left in. 8. On the Specify Recovery Options page, check Enable SAN based recovery using hardware snapshots. Compellent Technologies Page 18
19 9. Click Next, and then click Recover. Compellent Technologies Page 19
20 DPM 2007 Requirements The Microsoft System Center Data Protection Manager server must be a dedicated, single-purpose server, and cannot be either a domain controller or an application server. To install DPM successfully, you must install the software listed in Table 1.1 before installing the DPM application. DPM Setup will then install the additional required prerequisite software. If you want to install the required prerequisite software manually, you must follow the steps detailed in Manually Installing Prerequisite Software in the Data Protection Manager Help. Table 1.1 lists the DPM server prerequisite software that DPM Setup does not install. You must install the following software before you can install DPM. Software Install from Microsoft Management Console Hotfix : This hotfix resolves an issue with Windows-based systems which may cause them to deplete their paged pool if the Volume Shadow Copy Service is placed under heavy load. 32-Bit x86 operating systems: x64-bit operating systems: Windows PowerShell Bit x86 operating systems: x64-bit operating systems: Table 1.1 Prerequisite Software that DPM Installs Following is the DPM server prerequisite software that DPM Setup installs before installing the DPM application. Microsoft.NET Framework 2.0 Microsoft Software Quality Metrics (SQM) Single Instance Storage (SIS) Internet Information Services (IIS) 6.0 Compellent Technologies Page 20
21 Protected Computers Each server Microsoft System Center Data Protection protects must meet the requirements in Table 1.2. Protected Computers Computer Requirements File servers You can protect file servers on any of the following operating systems: Windows Server 2003 with Service Pack 1 (SP1) or later (Standard and Enterprise Editions). Windows Advanced Server 2003 with SP1 or later. Windows Server 2003 R2 (Standard and Enterprise Editions). Windows Storage Server 2003 with SP1 or later (Standard, Enterprise and Express Editions). Note To obtain SP1 for Windows Storage Server 2003, contact your original equipment manufacturer. Windows Small Business Server 2003 (Standard and Premium Editions). Windows Small Business Server 2003 R2 (Standard and Premium Editions). Windows Server 2008 (Core, Standard, and Enterprise Editions). Computers running SQL Server Microsoft SQL Server 2000 with Service Pack 4 (SP4) - OR - Microsoft SQL Server OR - Microsoft SQL Server 2005 with SP1 or Service Pack 2 (SP2) Compellent Technologies Page 21
22 Note DPM supports Standard, Enterprise, Workgroup, and Express Editions of SQL Server. Important You must start the SQL Server VSS Writer Service on computers running SQL Server 2005 SP1 before you can start protecting SQL Server data. The SQL Server VSS Writer Service is turned on by default on computers running SQL Server To start the SQL Server VSS Writer service, in the Services console, right-click SQL Server VSS writer, and then click Start. Computers running Exchange Server Exchange Server 2003 with SP2 - OR - Exchange Server 2007 Note DPM supports Standard and Enterprise Editions of Exchange Server. Before you can protect Exchange Server 2007 data, you must install hotfix For more details, see Knowledge Base article , "Description of Update Rollup 4 for Exchange 2007" ( Computers running Virtual Server / Hyper-V Hyper-V (Required DPM SP1) Microsoft Virtual Server 2005 R2 SP1 Note To protect virtual machines for online backups, we recommend that you install version of Virtual Compellent Technologies Page 22
23 Machine Additions ( Windows SharePoint Services Windows SharePoint Services 3.0 Microsoft Office SharePoint Server 2007 Before you can protect Windows SharePoint Services (WSS) data, you must do the following: Install Knowledge Base article , "Update for Windows SharePoint Services 3.0" ( Start the WSS Writer service on the WSS Server and then provide the protection agent with credentials for the WSS farm. For more information, see "Starting and Configuring the WSS VSS Writer Service" in Configuring DPM 2007 ( Update the instance of SQL Server 2005 to SQL Server 2005 SP2. Shared disk clusters File servers SQL Server 2000 with SP4 SQL Server 2005 with SP1 Exchange Server 2003 with SP2 Exchange Server 2007 Non-shared disk clusters Exchange Server 2007 Workstations Windows XP Professional SP2 Windows Vista (must be a member of a domain) Table 1.2 Protected Server Requirements Compellent Technologies Page 23
24 DPM 2007 Protectable and Recoverable Data Product Protectable Data Recoverable Data Microsoft Exchange Server 2003 with Service Pack 2 (SP2) Exchange Server 2007 Storage group Storage group Database Mailbox Microsoft SQL Server 2000 with Service Pack 4 (SP4) SQL Server 2005 with Service Pack 1 (SP1) or later Microsoft SQL Server 2008 Database Database Microsoft Office SharePoint Server 2007 Microsoft Windows SharePoint Services 3.0 Farm Farm Database Site File or list Windows Server 2003 with SP1 Windows Storage Server 2003 with SP1 Windows Server 2008 Volume Share Folder Volume Share Folder File data Microsoft Virtual Server 2005 R2 SP1 Microsoft Hyper-V Virtual server host configuration Virtual machines Data for applications running in virtual machines Virtual server host configuration Virtual machines Data for applications running in virtual machines All computers that can be protected by DPM 2007 except computers running System state System state Compellent Technologies Page 24
25 Windows Vista or Windows Server 2008 Workstations running Windows XP Professional SP2 Windows Vista operating systems, except the Windows Vista Home Premium operating system (the computer running Windows Vista must be a member of a domain) Volume Share Folder File data Volume Share Folder File data Note DPM does not support file protection on portable computers running Windows XP Professional SP2 and Windows Vista operating systems. Compellent Technologies Page 25
26 DPM 2010 DPM 2010 Overview Microsoft System Center Data Protection Manager 2010 provides continuous data protection of Windows applications and file servers including Windows Server 2003 through 2008 R2, SQL Server 2000 through 2008 R2, Exchange Server 2003 through 2010, SharePoint Server 2003 through 2010, Dynamics AX 2009, SAP running on SQL Server, Microsoft Virtual Server 2005 R2, and Hyper-V (including Cluster Shared Volumes). A single DPM server can protect up to 100 servers, 1000 laptops, or 2000 databases. Compellent VSS Hardware Provider Support With the introduction of DPM 2010, Microsoft has added support for third-party VSS hardware providers. It is important to note that third-party VSS hardware provider support is ONLY available when used with Hyper-V workloads on Cluster Shared Volumes. In addition, Compellent s VSS hardware provider is only available with the purchase of Compellent Replay Manager for Microsoft Servers. Microsoft strongly recommends the use of hardware snapshots via a VSS hardware provider for CSV clusters. Tested VSS Hardware Providers: CSV Backups via Hardware Snapshot with DPM 2010 Cluster Shared Volumes provide the ability for all nodes of a Hyper-V cluster to have simultaneous access to a specific volume while each virtual machine has direct I/O access to its specific VHD on the CSV regardless of its location within the cluster. When a backup takes place via a software snapshot or using VOLSNAP (as DPM does), the CSV on which the VHD is contained has to be moved local to the node where the virtual machine is currently homed. During the backup, the CSV remains active on the specific node for the duration of the snapshot and the actual backup process. This results in a performance impact since Direct I/O will be minimized, which in turn results in limiting the number of VM backups that can take place since these backups take place in a serial fashion. The use of hardware snapshots (backups that take place with a third-party VSS hardware provider) in a CSV cluster are recommended because they allow the CSV to continue Direct I/O as soon as the hardware snapshot completes. This process takes around two minutes and allows VMs to be backed up in parallel providing additional scalability. Compellent Technologies Page 26
27 Hyper-V Protection Prerequisites Virtual Machine Item-Level Recovery To enable virtual machine item-level recovery, the Hyper-V role must be installed on the DPM Server. If the DPM Server hardware does not support the installation of the Hyper- V role, DPM will still continue to protect the virtual machine, but item-level recovery will not be available. Integration Components The Hyper-V Integration Components must be installed on all guest virtual machines. ( Windows Server 2008 SP2 On the Hyper-V server, install Microsoft Windows Server 2008 SP2 or install the Hyper-V prerequisites. ( Windows Server 2008 R2 Install these hotfixes: KB ( and KB ( Compellent VSS Hardware Provider (for CSV Clusters only) For a CSV deployment, install the Compellent Replay Manager for Microsoft Servers, which contains the Compellent VSS hardware provider on each Hyper-V node in the cluster. Compellent VSS Hardware Provider Configuration The Compellent VSS hardware provider is configured via the Replay Manager Configuration wizard. The configuration of this wizard allows you to setup the connection to the Compellent Storage Center which contains the CSV volumes that are part of the Hyper-V cluster. Once the host, user name, password, and server object are specified and saved, VSS uses this configuration information to perform the hardware-based snapshots (replays). NOTE: Replay Manager must be installed on each Hyper-V host in the cluster. In addition, the Replay Manager configuration wizard must be run on each node to configure the Storage Center connection as specified above. Compellent Technologies Page 27
28 Hyper-V CSV Backup Process with Compellent VSS Hardware Provider Data Protection Manager 2010 initiates a Hyper-V virtual machine backup contained on a cluster shared volume (CSV). The Compellent VSS Hardware Provider receives the call from DPM 2010 to take a snapshot of the CSV. The snapshot is completed on the Storage Center and the new replay is visible in the Storage Center Manager. A new view is created from the Storage Center replay, and then is mapped to the Hyper-V cluster node from which the virtual machine was located. Compellent Technologies Page 28
29 The data from the view (replay) that was mapped up to the Hyper-V cluster node is copied over the network to the DPM Server storage pool. Once the backup is complete, the view (replay) is unmapped from the Hyper-V cluster node and deleted from the Storage Center (including the original replay that was taken as part of the backup process. The DPM backup is successfully completed as indicated in the dialog. Protecting Non-Virtualization Workloads with SAN-Based Backup As stated above, DPM 2010 can leverage Compellent s VSS hardware provider for snapshots of Hyper-V with CSV cluster workloads. However, at this time, only CSV cluster workloads are supported when using the VSS hardware provider. SAN-based backup and recovery is still possible using a combination of scripts and manual intervention as covered in the DPM 2007 section earlier in this document. Specific differences in the process between DPM 2007 and DPM 2010 are also noted. Compellent Technologies Page 29
30 Hardware Requirements Component Minimum requirement Recommended requirement Processor 1 GHz, dual-core CPU or faster 2.33 GHz quad-core CPU RAM 4 GB For more information about how DPM manages memory, see DPM and Memory. 8 GB Pagefile 0.2 percent of the combined size of all recovery point volumes, in addition to the recommended size (generally, 1.5 times the amount of RAM on the computer). For more information about configuring the DPM pagefile size, in the DPM Operations Guide, see Managing Performance. 1.5 times the amount of RAM on the computer Disk space for DPM installation DPM installation location: 3 GB Database files drive: 900 MB System drive: 1 GB Note The system drive disk space requirement is necessary if you choose to install the dedicated instance of SQL Server from DPM Setup. If you use a remote instance of SQL Server, this disk Note DPM requires a minimum of 300 MB of free space on each protected volume for the change journal. Additionally, before archiving data to tape, DPM copies the file catalog to a DPM temporary installation location; therefore, we recommend that the volume on which DPM is installed contains 2 3 GB of free space. Compellent Technologies Page 30
31 space requirement is considerably less. Disk space for storage pool Note The storage pool does not support Universal Serial Bus (USB)/1394 disks. 1.5 times the size of the protected data For more information about calculating capacity requirements and planning the configuration of the disks, in Planning a DPM 2010 Deployment, see Planning the Storage Pool times the size of the protected data Logical unit number (LUN) N/A Maximum of 17 TB for GUID partition table (GPT) dynamic disks 2 TB for master boot record (MBR) disks Note These requirements are based on the maximum size of the disk as it appears to the Windows Server operating system. The following table lists the data source limits that a DPM server can protect (if it meets the minimum hardware requirements) and the recommended disk space required for the DPM server. Platform Data source limit Recommended disk space 64-bit computers 600 volumes, of which 300 are replica volumes and 300 are recovery point volumes Data sources are typically spread 80 TB per DPM server, with a maximum recovery point size of 40 TB Compellent Technologies Page 31
32 across approximately 75 servers and 150 client computers. Protected Computer Requirements Protected computers Computer requirements File servers You can protect file servers on any of the following operating systems: Windows Server 2003 Service Pack 2 (SP2), Core, Standard, Enterprise, and Datacenter Editions Before you can protect a file server running Windows Server 2003 SP2, you must apply the following updates: Knowledge Base article : Update for Windows Server 2003 ( The hotfix described in Knowledge Base article : An application or service that uses a file system filter driver may experience function failure on a computer that is running Windows Vista, Windows Server 2003, or Windows Server 2008 ( Windows Server 2008, Core, Standard, Enterprise, and Datacenter Editions Before you can protect a file server running Windows Server 2008, you must apply the following updates: The hotfix described in Knowledge Base article : The DFS Replication service may stop responding when it initializes the replication process for the replicated folders on a computer that is running Windows Server 2008 or Windows Server 2008 R2 ( The hotfix described Knowledge Base article : An application or service that uses a file system filter driver may experience function failure on a computer that is running Windows Vista, Windows Server 2003, or Windows Server 2008 ( Windows Server 2008 R2, Core, Standard, Enterprise, and Datacenter Editions Before you can protect a file server running Windows Server 2008 R2, you must apply the hotfix described in Knowledge Base article : The DFS Replication service may stop responding when it initializes the replication process for the replicated folders on a computer that is running Windows Server 2008 or Windows Server 2008 R2 ( Compellent Technologies Page 32
33 Computers running SQL Server Microsoft SQL Server 2000 with Service Pack (SP4), Standard, Enterprise, Workgroup, Compact, and Express Editions Before you can protect a computer running SQL Server 2000 on Windows Server 2003 SP2, you must apply Knowledge Base article : Update for Windows Server 2003 ( Microsoft SQL Server 2005 with SP1, SP2, or SP3, Standard, Enterprise, Workgroup, Compact, and Express Editions Before you can protect a computer running SQL Server 2005 on Windows Server 2003 SP2, you must apply Knowledge Base article : Update for Windows Server 2003 ( Microsoft SQL Server 2008, Standard, Enterprise, Workgroup, and Compact, Express Editions Important Before you can start protecting computers running SQL Server 2005 SP1, you must start the SQL Server VSS Writer service. By default, the SQL Server VSS Writer service is turned on for computers running SQL Server To start the SQL Server VSS Writer service, in the Services console, right-click SQL Server VSS writer, and then click Start. Computers running Exchange Server Exchange Server 2003 with Service Pack 2 (SP2), Standard and Enterprise Editions Before you can protect a computer running Exchange Server 2003 on Windows Server 2003 SP2, you must apply Knowledge Base article : Update for Windows Server 2003 ( Exchange Server 2007, Standard and Enterprise Editions Before you can protect Exchange Server 2007 data in a Clustered Continuous Replication (CCR) configuration, you must apply Knowledge Base article : Description of Update Rollup 4 for Exchange 2007 ( Exchange Server 2010 Important Compellent Technologies Page 33
34 The eseutil.exe and ese.dll versions that are installed on the most recent release of Exchange Server must be the same versions that are installed on the DPM server. In addition, you must update eseutil.exe and ese.dll on the DPM server if they are updated on a computer running Exchange Server after applying an upgrade or an update. For more information about updating eseutil.exe and ese.dll, see Eseutil.exe and Ese.dll. Computers running Virtual Server Microsoft Virtual Server 2005 R2 SP1 Microsoft Virtual Server 2008 (non-clustered and clustered) Note To protect virtual machines for online backups, we recommend that you install Microsoft Virtual Server 2005 Updated Additions ( Hyper-V Windows Server 2008 with Hyper-V Before you can protect a computer running Windows Server 2008 with Hyper-V, you must apply the following updates: Knowledge Base article : Windows Server 2008 Service Pack 2 and Windows Vista Service Pack 2 - Five Language Standalone ( The hotfix described in Knowledge Base article : A backup of virtual machines fails when you use the Hyper-V VSS writer to back up virtual machines concurrently on a computer that is running Windows Server 2008 ( Windows Server 2008 R2 with Hyper-V Before you can protect a computer running Windows Server 2008 R2 with Hyper-V, you must apply the following updates: For a clustered or non-clustered computer running Windows Server 2008 R2 with Hyper-V, apply the hotfix described in Knowledge Base article : A Hyper-V update rollup package is available for a computer that is running Windows Server 2008 R2 ( For a clustered computer running Windows Server 2008 R2 with Hyper-V, also apply the hotfix described in Knowledge Base Compellent Technologies Page 34
35 article : You may be unable to perform certain disk-related operations after an exception when a hardware provider tries to create a snapshot in Windows Server 2008 R2 or in Windows 7 ( Windows SharePoint Services Windows SharePoint Services 3.0 Before you can protect a computer running Windows SharePoint Services 3.0, you must apply the update in Knowledge Base article : Update for Windows SharePoint Services 3.0 ( Windows SharePoint Services 3.0 with Service Pack 1 (SP1) Before you can protect Windows SharePoint Services 3.0 data, you must do the following: Start the Windows SharePoint Services VSS Writer service on the Windows SharePoint Services server and then provide the protection agent with credentials for the Windows SharePoint Services farm. Install the SQL Server Client components on the front-end Web server of the Windows SharePoint Services farm that DPM is going to protect. For information about installing SQL Server 2008 components, see How to: Install SQL Server 2008 ( If you use the Office SharePoint Server Search service, before you can protect Windows SharePoint Services 3.0 data, you must apply the following updates: The update in Knowledge Base article : Infrastructure Update for Windows SharePoint Services 3.0 ( The update in Knowledge Base article : Update for Windows SharePoint Services 3.0 ( Windows SharePoint Services 4.0 Microsoft Office SharePoint Server 2007 Before you can protect a computer running Office SharePoint Server 2007, you must apply the update in Knowledge Base article : Update for Windows SharePoint Services 3.0 ( Microsoft Office SharePoint Server 2007 with Service Pack 1 (SP1) If you use the Office SharePoint Server Search service, before you can protect Office SharePoint Server 2007 SP1 data, you must apply the following updates: Compellent Technologies Page 35
36 The update in Knowledge Base article : Infrastructure Update for Windows SharePoint Services 3.0( The update in Knowledge Base article : Update for Windows SharePoint Services 3.0 ( Office SharePoint Server 2010 Important Before you can protect a computer running any version of SharePoint Services or SharePoint Server on Windows Server 2003 SP2, you must apply the update in Knowledge Base article : Update for Windows Server 2003 ( Shared disk clusters File servers SQL Server 2005 with Service Pack 1 (SP1) SQL Server 2008 Exchange Server 2003 with Service Pack 2 (SP2) Exchange Server 2007 Exchange Server 2010 Hyper-V Non-shared disk clusters Exchange Server 2007 Exchange Server 2010 Workstations Windows XP Service Pack 2 (SP2) or later Note The end-user restore feature is not enabled on Windows XP computers. Compellent Technologies Page 36
37 Windows Vista or Windows Vista Service Pack 1 (SP1) Windows 7 Client DPM 2007/2010 Configuration Best Practices Database File Copy During the database file move portion of the SAN-Based backup and Recovery, you will only move the.mdb (database) file to the DPM FULL folder. When the Consistency Check has completed, you will see that DPM moves the.ldb (log) file to that location as well. In addition, you will only see one of the volumes in the Modify Disk section. You will not see either the Log or Database volumes. Therefore, you protect only the Database volume and DPM handles the log file(s). Automation You may wish to use the Compellent PowerShell Command Set in addition to the built-in DPM PowerShell cmdlets to automate portions of this. By utilizing PowerShell, you can streamline this process to avoid user error during the backup and recovery of your data. Recovery Points and Snapshot Deltas In order to recover from a specific point in time, all volumes attached to the DPM server for that protection group must have a snapshot (replay) taken and assigned to the protected server. However, if those copies already reside on the protected server you do not need to re-perform this action. Mount Points For larger environments that maintain a large number of volumes, it will be necessary to utilize mount points instead of individual drive letters for each protected server volume replica that is being mapped up to the DPM Server. The overall process doesn t change, however, when configuring the protection group and specifying disk allocations, the custom volume (particularly the replica volume) dropdown box will show all volumes that contain either a drive letter or mount point. Automount Automount, the process that enables Windows to automatically mount new basic volumes that are added to the system and to assign them drive letters, must be enabled for DPM 2010 backup and recovery to work. The following PowerShell script will enable Automount on a Windows server. Invoke-command -computername <ServerName> -scriptblock {"automount enable" diskpart.exe} Conversely, the following PowerShell script will disable Automount on a Windows server. Invoke-command -computername <ServerName> -scriptblock {"automount disable" diskpart.exe} Compellent Technologies Page 37
38 Performance Benefits of SAN-Based Recovery Data Instant Replay With Compellent Storage Center Data Instant Replay, you can recover any size volume to any server quickly, without any of the traditional snapshot restraints. Using a simple point-and-click interface in concert with Microsoft Data Protection Manager, administrators of all levels can immediately recover in the event of disruption. Data Instant Replay supports unlimited number of Replays per volume, mapped to any server. There are no requirements to have pre-allocated disk storage for your replays; replays are created without an initial mirror saving capacity. Data Progression Hardware snapshots (replays) can participate in another feature of the Compellent Storage Center: tiered storage, also known as Data Progression. Storage Center's Data Progression is a complete hardware and software architecture that delivers fully automated tiered storage. This patented technology cuts administrative time and reduces overall storage costs by dynamically classifying and moving data at the block-level between tiers of storage based on frequency of access. This complete Automated Tiered Storage solution does not require time consuming data classification and the repetitive manual transfer of data between tiers. That means that data that isn t regularly access is migrated to lower cost storage, which in turn means that your Tier 1 storage is reserved for only data that is access regularly like your mission critical application and file data. Thin Provisioning Compellent's Thin Provisioning, called Dynamic Capacity, delivers the highest storage utilization possible by eliminating allocated but unused capacity. Dynamic Capacity completely separates storage allocation from utilization, enabling users to allocate any size virtual volume upfront yet only consume actual physical capacity when data is written by the application. And, with Compellent s Thin Import and Free Space Recovery, you can extend the benefits of Dynamic Capacity to convert legacy volumes into thin provisioned data or optimize space utilization in Windows environments. Compellent Technologies Page 38
39 Network Bandwidth Network bandwidth is important and shouldn t be fully tied up by your backup processes. With Microsoft Data Protection Manager you have the ability to perform SAN-based hardware snapshots that leverage the power of DPM and the Compellent Storage Center s Data Instant Replay. Using DPM and Compellent Storage Center help you achieve maximum recoverability with minimal bandwidth. Compellent Technologies Page 39
40 Appendix PowerShell Script: CreateShadowCopy.ps1 This script can be used for taking snapshots in a SAN recovery on a DPM 2007/2010 implementation. Copy and paste the script contents below into a file and name it CreateShadowCopy.ps1. This file should be saved to the BIN directory of your Microsoft DPM installation. (ex. C:\Program Files\Microsoft DPM\DPM\bin\) param([string] $DSName, [string] $PGName) if(!$args[0]) { if(!$dsname) { $DSName = read-host "DatasourceName:" } } else { if(("-?","-help") -contains $args[0]) } { } else { } write-host Usage:: write-host CreateShadowCopy.ps1 DatasourceName ProtectionGroupName write-host Help:: write-host Creates a shadow copy for the given Datasource write-host exit 0 write-host "Usage -? for Help" exit 1 if(!$pgname) { $PGName = read-host "ProtectionGroupName:" } $dpmname = &"hostname" connect-dpmserver $dpmname $pg = get-protectiongroup -dpmservername $dpmname if (!$pg) { write-error "Cannot get the protectiongroup" disconnect-dpmserver $dpmname exit 1 } $mypg = $pg where {$_.FriendlyName -eq $PGName} if (!$mypg) { Compellent Technologies Page 40
41 } write-error "Cannot get the requested protectiongroup" disconnect-dpmserver $dpmname exit 1 $ds = get-datasource -protectiongroup $mypg if (!$ds) { write-error "Cannot get the datasources for the PG" disconnect-dpmserver $dpmname exit 1 } $myds = $ds where {$_.Name -eq $DSName} if (!$myds) { write-error "Cannot get the required Datasource" disconnect-dpmserver $dpmname exit 1 } $j = new-recoverypoint -datasource $myds -DiskRecoveryPointOption WithoutSynchronize -Disk if (!$j) { write-error "Cannot get the required Datasource" disconnect-dpmserver $dpmname exit 1 } $jobtype = $j.jobtype while (! $j.hascompleted ) { write-host "Waiting for $jobtype job to complete..."; start-sleep 5 } if($j.status -ne "Succeeded") { write-error "Job $jobtype failed..." } Write-host "$jobtype job completed..." disconnect-dpmserver $dpmname exit Compellent Technologies Page 41
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