Flash Copy Solutions im Windows Umfeld TSM for Copy Services

1. Flash Copy Solutions im Windows UmfeldTSM for Copy Services Wolfgang Hitzler Technical Sales Tivoli Storage Management Hitzler@de.ibm.com 0170-2283555

2. TSM for Copy Services Content • Extended snapshot support to applications on Windows • Add VSS snapshot support for MS Exchange Server • Support snapshot providers for MS Exchange VSS • Software snapshots through VSS • Support devices that implement VSS provider interface • It is a new product • Driven by (and also prerequisite) IBM TSM for Mail (DP for MS EX) • MS-SQL Support planned for TSM V5.5 • IMR for Exchange planned for TSM V5.5 • FS-Backup planned for TSM V6.01

3. What is VSS ? • The Volume Shadow Copy Service(VSS) provided with Microsoft Windows Server 2003 is an enhanced Storage Management feature that provides a framework and an API that enables the creation of consistent point-in-time copies of data known as shadow copies. • The VSS service enables the interoperability of third-party storage management programs, business programs, and hardware providers in order to create and manage shadow copies. • Several features in Windows Server 2003 already use the Volume Shadow Copy Service, such as Shadow Copies for Shared Folders and Backup.

4. VSS Roles • Requestors • Requestors are any applications using the VSS API • Backup/Recovery application, such as TSM for Mail or TSM B/A Client • Writers • Applications or services that store persistent information on disk and that cooperate with providers and requestors through the shadow copy interface • Application (e.g. SQL Server, MS Exchange, …) • Providers • Manage running volumes and create the shadow copies of them on demand • e.g. Disk Subsystem, such as SVC or DS8000 • MS delivers ‘System Provider’ as part of the operating system • System Provider uses the ‘copy-on-write technique’

5. General VSS Architecture

6. Functional Objectives • Fast Backups- Perform on-line backups of the Exchange Server at snapshot speeds. • Off-loaded Backups - Off-load the backup of data to the TSM Server storage pools to another machine. • Fast Recovery - Perform very fast restores from Exchange Server backups. • Restore from local disk avoiding media mounts • Restore through volume snapshot • TSM Management of Snapshot Backups – Apply TSM policy to control number of snapshot versions and automatically release/reuse disk space when version limit exceeded • Integrated User Interface - Integrate the snapshot operations and legacy backup API operations into the same user interface.

7. TSM for CS Components

8. Snapshot Support Topology Local Snapshot Versions Backup Server Application Server Application Data Backup to TSM Server Snapshot Creation Restore from Snapshot Backup to TSM Server Restore from TSM Server Policy-based snapshot management TSM Server Storage Hierarchy

9. Shadow copy creation process

10. TSM for Copy Services - General Architecture Machine A (primary) Source Volumes Machine B (secondary) Exchange Server Snapshot Volumes VSS/VDS VSS/VDS Data Protection For Exchange Local DSMAgent Remote DSMAgent TSM Server

11. Exchange VSS Support Characteristics • Single command-line interface (CLI) for performing legacy and VSS snapshot backup, restore, and query operations • Single graphical-user interface (GUI) for performing legacy and VSS snapshot backup, restore, and query operations • Support for both Hardware & Software VSS providers • Those that strictly adhere to Microsoft VSS provider requirements • Operate in a clustered Exchange environment

12. VSS Backup Functionality • Backup types: FULL, COPY • Backup granularity is at the "Storage Group" level. • Backups are managed through TSM Server policy. • Backups can be stored on local disk, the TSM Server, or both • specify different policy settings for each storage location • specify different policy settings for different backup types (Full, Copy) • Data movement to TSM Storage can be off-loaded to a secondary machine • requires a VSS hardware provider that supports transportable shadow copy volumes

13. VSS Restore Functionality • Restore granularity is at the storage group or individual database level • Standard Restore paths for VSS backups • VSS Restore - Restore from TSM Server storage • VSS Fast Restore - Restore via file copy from mounted shadow copy image • Additional special Restore paths developed by IBM for SVC • VSS Instant Restore – FlashCopy shadow copy image to production volume • Specifically for IBM SAN Volume Controller (version 2.1 or later) • Competitive Advantage

14. Supported Providers • All Providers (including DS4000, DS6000, DS8000, SVC, other vendors, …) on the Microsoft website are supported • IBM’s lab testing included: • System provider • IBM SVC • IBM DS4000 • IBM DS6000 • IBM DS8000 • IBM N-series / NetApp

15. Benefits of TSM for CS • Fast non-disruptive Backups • Perform on-line backups of database applications at snapshot speed with virtually zero impact to the application. • Transfer data to the TSM Server storage pools from a secondary machine. • Fast / Instant Recovery • Restore from local disk avoiding media mounts • Restore through volume snapshot • Integrated Management of Backups • Support multiple persistent snapshots • Integrate snapshot operations and legacy backup API operations • Manage both through TSM server policy

16. Externals – Backup Panel

17. Externals – Restore Panel

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