PRIMECLUSTER Global File Services Configuration and Administration Guide 4.2 (Solaris(TM) Operating Environment)

15.3 Backup Design

This section describes the hardware required to restore backed up file systems and the methods used to perform backups.

• Required hardware

A tape unit or hard disk unit is used to backup the GFS Shared File System.

A disk array equipment of our company such as ETERNUS6000 or ETERNUS3000 is used to perform high-speed backup restoration in coordination with GDS through sfcproxyop(1M) and sfcproxyrestore(1M) during OPC implementation.

• Backup restoration procedure

The GFS Shared File System restores backed up file systems with the following methods:

• Restoring the entire file system: dd(1M) or sfcmkbkup(1M)
• Restoring the file system on a file basis: sfccpio(1)
• Restoring the file system on a file basis: sfcdump(1M) or sfcrestore(1M)
• High-speed backup restoration of the file system unit by cooperation with GDS which used sfcproxyop(1M) and sfcproxyresotre(1M)

If the GFS Shared File System consists of multiple partitions, backups should be restored on a partition basis. By distributing restoration of a partition backup to multiple nodes, backup restoration can be performed in parallel, reducing the time required.

If tar(1) or cpio(1) used, extent attribute does not copy.

For more information about restoring backups in the GFS Shared File System, see Chapter 24 "File System Backing-up and Restoring."