Sun Microsystems Virtual Tape Library manual Virtual tape drive compression

Managing virtual libraries

▼Changing administrator passwords

1.Right‐click on the VTL server node name (A below), and select Change Password from the context menu (B).

A

B

2.When the dialog appears, enter the password that you need to change in the Old Password text box (C below).

C

D

E

3.Enter the changed password in the New Password and Confirm Password text boxes (D above).

4.Press OK (E).

Stop here.

Virtual tape drive compression

VTL’s compression saves disk space by compressing files so that more data can be stored by a virtual tape drive. The increase in capacity is directly related to the compressibility of the data being backed up. If you can compress the data being backed up by a factor of up to 2:1, you can store up to twice as much information on the virtual tape. Disk compression can vary depending upon the dataset; certain file types (ZIP, PDF, GIF, RAR, etc.) are already compressed and cannot be compressed further.

84 VTL User Guide • May 2008 G • 96267