InfoScale™ 9.0 Storage Foundation Quick Recovery Solutions Guide for Microsoft SQL Server - Windows
- Introducing Quick Recovery for SQL Server
- About Quick Recovery snapshot solutions
- About snapshot-assisted backups
- Advantages of Quick Recovery snapshots
- Quick Recovery process
- Methods of implementing Quick Recovery snapshots for SQL Server
- About the components used in Quick Recovery
- VCS, Microsoft clustering, and Volume Replicator considerations
- About the Solutions Configuration Center
- Starting the Configuration Center
- Solutions wizard logs
- Preparing to implement Quick Recovery for SQL Server
- Implementing Quick Recovery for SQL Server with the configuration wizard
- About the Quick Recovery Configuration Wizard
- Tasks for implementing snapshot sets with the configuration wizard
- Reviewing the prerequisites
- Scheduling SQL Server snapshot sets
- System Selection panel details
- Instance Selection panel details
- Mount Details panel details
- Synchronizing Schedules panel details
- Template Selection panel details
- Number of Snapshot Sets panel details
- Snapshot Volume Assignment panel details
- Snapshot Schedule panel details
- Specifying snapshot schedule details
- Summary panel details
- Template Implementation panel
- Scheduling or creating an individual snapshot set for SQL Server
- Maintaining or troubleshooting snapshots
- Recovering a SQL Server database
- About recovering a SQL Server database
- Tasks for recovering a SQL Server database
- Prerequisites for recovering a SQL Server database
- Types of recovery
- Recovering using snapshots without log replay
- Recovering using snapshots and log replay
- Restoring snapshots and manually applying logs
- Recovering missing volumes
- Post-recovery steps
- Vxsnap restore command reference
- Vxsnap utility command line reference for SQL Server
VSS process
FlashSnap integrates with Volume Shadow Copy Service as both a VSS Requestor and a VSS Provider.
The following steps occur, in the order presented, during the snapshot process:
Acting as a VSS Requestor, FlashSnap notifies the VSS coordinator service to prepare for a split-mirror snapshot of a SQL Server instance.
The VSS coordinator service calls the SQL Server VSS Writer to find out which volumes contain the databases and transaction logs.
The VSS coordinator service notifies the FlashSnap VSS Provider to prepare for the snapshot.
Acting as a VSS Requestor, FlashSnap requests that the VSS coordinator service begin the snapshot call.
The VSS coordinator service notifies the SQL Server VSS Writer to quiesce and freeze the databases in preparation for the snapshot. When this is accomplished, the SQL Server Writer informs the VSS coordinator service to proceed.
The VSS coordinator service calls the FlashSnap Provider to create the split-mirror snapshot by detaching the snapshot volume from the original volume. The snapshot process takes a maximum of 10 seconds. After the snapshot volume is detached, the FlashSnap Provider informs the VSS coordinator service to proceed.
The VSS coordinator service notifies the SQL Server VSS Writer to thaw (release the freeze) and resume normal I/O.
The following steps occur, in the order presented, during the restore process:
Acting as a VSS Requestor, FlashSnap notifies the VSS coordinator service to prepare for a restore operation.
The VSS coordinator service calls the SQL Server VSS Writer, which prepares for the restore operation.
The FlashSnap utility restores the snapshot volumes. After the snapback operation completes, the FlashSnap utility informs the VSS coordinator service to proceed.
The VSS coordinator service notifies the SQL Server VSS Writer to process the post-restore operations.