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© 2006 IBM Corporation
Flash Copy Solutions im Windows Umfeld
TSM for Copy Services
Wolfgang HitzlerTechnical Sales Tivoli Storage [email protected]
© 2006 IBM Corporation2 IBM Tivoli Storage Management
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
© 2006 IBM Corporation3 IBM Tivoli Storage Management
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.
© 2006 IBM Corporation4 IBM Tivoli Storage Management
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’
© 2006 IBM Corporation5 IBM Tivoli Storage Management
General VSS Architecture
© 2006 IBM Corporation6 IBM Tivoli Storage Management
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.
© 2006 IBM Corporation7 IBM Tivoli Storage Management
TSM for CS Components
© 2006 IBM Corporation8 IBM Tivoli Storage Management
Snapshot Support Topology
TSM Server
Storage Hierarchy
ApplicationData
Local Snapshot Versions
Snapshot Creation
Policy-based snapshot
management
Application Server
Backup to TSM Server
Backup Server
Restore from Snapshot
Backup to TSM ServerRestore from
TSM Server
© 2006 IBM Corporation9 IBM Tivoli Storage Management
Shadow copy creation process
© 2006 IBM Corporation11 IBM Tivoli Storage Management
DataProtection
ForExchange
LocalDSMAgent
ExchangeServer
RemoteDSMAgent
VSS/VDS VSS/VDS
TSMServer
Machine A (primary)
Machine B (secondary)Source
Volumes
SnapshotVolumes
TSM for Copy Services - General Architecture
© 2006 IBM Corporation12 IBM Tivoli Storage Management
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
© 2006 IBM Corporation13 IBM Tivoli Storage Management
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
© 2006 IBM Corporation14 IBM Tivoli Storage Management
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
© 2006 IBM Corporation15 IBM Tivoli Storage Management
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
© 2006 IBM Corporation16 IBM Tivoli Storage Management
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
© 2006 IBM Corporation17 IBM Tivoli Storage Management
Externals – Backup Panel
© 2006 IBM Corporation18 IBM Tivoli Storage Management
Externals – Restore Panel
© 2006 IBM Corporation20 IBM Tivoli Storage Management
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