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

6.6.4 Backing Up and Restoring by the Disk Unit's Copy Function

This sub-section describes the method of backing up data from and restoring data back to mirror volumes in the primary domain through a backup server in another domain using the disk unit's copy function provided by a disk array unit.

If volume data is updated with copy functions of disk units, GDS does not recognize the update. If mirrored disk data is updated with copy functions of disk units, synchronization of the mirrors are no longer ensured. Therefore, when restoring mirror volume data using the disk unit's copy function, it is necessary to disconnect the other disk from mirroring once and reconnect it to mirroring after restoration.

The following example illustrates using an EMC's Symmetrix storage unit as a disk array unit and EMC TimeFinder as a copy function.

When restoration is performed with TimeFinder, configuration information within the private slice is also restored. For this reason, simultaneous backup and restore for all disks within the class is required. Additionally, the object configuration and status must match at backup and at restore, and so as in restore, it is necessary to disconnect the disks from mirroring before backup and reconnect after.

• For using EMC's Symmetrix storage units, refer to notes described in "To Use EMC Symmetrix."

• For details on the EMC TimeFinder command, refer to the EMC's SYMCLI manual.

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6.6.4.1 System Configuration

6.6.4.2 Summary of Backup

6.6.4.3 Summary of Restore from a BCV

6.6.4.4 Summary of Restore from Tape

6.6.4.5 Summary of Procedure

6.6.4.6 Configuring an Environment

6.6.4.7 Backing Up

6.6.4.8 Restoring form a BCV

6.6.4.9 Restoring from Tape