Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 31

When the read:write acceleration ratio was changed from 50:50 to 100:0 on the SMART-2/P

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Page 31 highlights

ECG075.0997 (cont.) DLT Tape Array II ... The results clearly show this performance relationship: The faster the drive system, the faster the backup. Test B shows backup performance can be almost tripled (from 30 to 84.5 GB/hr) with hardware that provides data to the tape drives fast enough. Test C demonstrates that performance can be increased with multiple jobs, but only with adequate feed speed. When the read:write acceleration ratio was changed from 50:50 to 100:0 on the SMART-2/P Array Controller setup, there was no significant change. It is recommended the acceleration ratio setting remain at the default of 50:50.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
The results clearly show this performance relationship: The faster the drive system, the faster
the backup. Test B shows backup performance can be almost tripled (from 30 to 84.5 GB/hr)
with hardware that provides data to the tape drives fast enough. Test C demonstrates that
performance can be increased with multiple jobs, but only with adequate feed speed.
When the read:write acceleration ratio was changed from 50:50 to 100:0 on the SMART-2/P
Array Controller setup, there was no significant change. It is recommended the acceleration
ratio setting remain at the default of 50:50.
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