Compression

Compression is used for backups. Compression is often selected to decrease disk space usage, but also has an inverse impact on your backup speed due to the increased CPU usage.

The available options are:

No Compression

This option has the lowest CPU usage (fastest speed), but also has the highest disk space usage for your backup image.

Standard Compression

Some compression is performed. This option provides a good balance between CPU usage and disk space usage. This is the default setting.

Maximum Compression

Maximum compression is performed. This option provides the highest CPU usage (lowest speed), but also has the lowest disk space usage for your backup image.

Notes:

• If your backup image contains uncompressible data (such as JPG images, ZIP files, and so on), you may need to allocate additional storage space to handle such data. As a result, if you select any compression option and have uncompressible data in your backup, it could result in an increase in disk space usage.

• If you change the compression level from No Compression to either Standard Compression or Maximum Compression, or if you change from either Standard Compression or Maximum Compression to No Compression, the first backup performed after this compression level change is automatically a Full Backup. After the Full Backup is performed, all future backups (Full, Incremental, or Verify) are performed as scheduled.
• This option is available only for the local or remote share destinations. You cannot change the compression setting if the Arcserve UDP agent is backed up to data store.

• If your destination does not have sufficient free space, you may consider increasing the Compression setting of the backup. This option is available only for the local or remote share destinations. You cannot change the compression setting if the Arcserve UDP agent is backed up to data store.