Advanced Backup to Disk Performance White Paper

Figure 10. File Library Configuration – Maximum File Depot Size 10 GB (50 GB Default)

Only for the Ultrium 960 tape drives, the block sizes of file library drives are configured with 256 KB

(64 KB default), as described in “Getting the most performance from your HP StorageWorks Ultrium

960 tape drive white paper” (

http://h18006.www1.hp.com/storage/tapewhitepapers.html).

Figure 11. File Library Configuration – Drive Block Size 256 KB for Ultrium 960 (64 KB Default)

Note: For avoiding resource-intensive block repacking during backup from file library to tape drives, it

is recommended to configure same block sizes for file library drives and the tape drives. E.g. Ultrium

960 tape drives perform best with the block size of 256 KB which should be also configured for the

belonging file library drives.