HP Data Protector Software Performance White Paper

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The results of all L&TT tape drive tests are illustrated in Figure 27, which shows the
performance limits of a direct attached Ultrium 960 tape drive. This figure is a reference for any
later Data Protector test. The tape drive cannot be faster as with L&TT. This applies to any
backup application.
Figure 27. Library and Tape Tools – results of tape drive tests
The tests revealed that the Ultrium 960 tape drive performs slightly better in the HP-UX than in
the Windows environment, but the difference is only marginal. Both environments demonstrated
that they are fully able to use the Ultrium 960 tape drive.
Basic Tape Drive Tests
HP Storage Works Library and Tape Tools
Windows HP-UX
176
180
156
181
158
160
154
188
0
20
40
60
80
100
120
140
160
180
200
Tape Write
Zeros
Windows
Tape Read
Zeros
Windows
Tape Write
Comp. 2:1
Windows
Tape Read
Compr. 2:1
Windows
Tape Write
Compr. 4.3:1
HP-UX
Tape Read
Compr. 4.3:1
HP-UX
Tape Write
Compr. 2:1
HP-UX
Tape Read
Compr. 2:1
HP-UX
MB/s