If the Tape Server is installed, you can back up data to both disks and tapes. Installation of Tape Server provides the following advantages.
Simple operation for backup to disks and tapes
You can easily execute the backup operation to disks and tapes.
You can back up data to both disks and tapes in a single operation.
Backup to tapes with minimum transaction stop duration
Backup to disks is implemented using the hardware function [Advanced Copy Function (OPC/EC)] of ETERNUS disk storage systems, and backup to tapes is performed from the Advanced Copy destination (backup volume). Therefore, access to transaction volumes is suppressed for a few seconds in the same manner as when using the conventional AdvancedCopy Manager. Database transactions are not stopped.
However, if the backup is performed only to tapes, not to disks, transactions are stopped until write to tape is completed.
Centralized management of backup history
Backup histories of data backed up to disks and tapes can be managed centrally.
Backup without applying load to the transaction server
The Tape Server takes care of backup to tapes, applying no load to the transaction server.
Support for multiple-platform environment
Even if the transaction servers connected to the SAN environment use different platforms, you don't need to prepare a Tape Server for each platform. One Tape Server enables backup on different platforms.
Reduce required backup destination disk capacity
You can minimize the backup destination disk capacity even when you want to save multiple generations of backups. To do this, back up to disk only the generations that need to be kept on disk (for example, the latest generation) and save the other generations to tape.
