Introducing Arcserve Backup Agents and Options › Using Options › Tape Library Option › Introducing the Option › How You Can Use the Option to Manage Tape RAID Libraries

How You Can Use the Option to Manage Tape RAID Libraries

Arcserve Backup offers significant performance benefits to your backup system by providing fault tolerance. During a restore, if one of the media becomes unusable, you can still restore data from the remaining media.

This option combines a number of tape drives to give better cost, performance, capacity, and reliability than you can achieve with a single drive. It also provides data redundancy, improved performance, and quick data recoverability from disk failures.

The following summarizes the benefits of each RAID level:

• RAID 0: Striping--RAID 0 level is an ideal solution when you require optimum performance. However, RAID 0 does not provide fault tolerance.
• RAID 1: Mirroring--RAID 1 offers a reasonably good fault tolerance and performance by creating two copies of the data that you are backing up.
• RAID 5: Striping with Parity--RAID 5 increases the virtual capacity of your media as three drives or more appear as one virtual drive. The end result is excellent performance and good fault tolerance.

Note: System and installation requirements using the option with tape RAID libraries can be found in the readme file for this release.

The Tape Library Option for tape RAID libraries does not support the following:

• Multiplexing
• File system devices
• Write Once Read Many (WORM) media
• Hardware encryption