PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.1 (Solaris(TM) Operating System)

6.2 Backing Up and Restoring a System Disk through an Alternative Boot Environment

This section discusses the method of backing up system disks with the GDS Snapshot function and creating an alternative boot environment by use of the backup copies, and the method of restoring the system disks through the alternative boot environment.

GDS Snapshot can collect snapshots of system disks (replications at a certain point) in the disk areas for backup (proxy volumes) during the system operation. You can configure an alternative boot environment to allow the system to be booted through such a proxy volume in order that the system operates in the alternative boot environment even if the system cannot be booted normally due to a failed system disk or damaged data. In addition, after switching to the alternative boot environment, you can restore data held in the original system disks by interchanging the master and proxy relationship of the original system disks and the backup disks and copying data in the backup disks (master volumes) back to the original system disks (proxy volumes).

In this manner, operation down time while backing up and restoring system disks and time required for recovery from a system disk failure can be reduced drastically.

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6.2.1 System Configuration

6.2.2 Summary of Backup

6.2.3 Summary of Restore

6.2.4 Summary of Procedure

6.2.5 Configuring an Environment

6.2.6 Backing Up

6.2.7 Restoring