HP Data Protector Software Performance White Paper

76
Figure 62 demonstrates that different buffer sizes resulted in similar backup performance. The
default buffer size of 32 KB (per backup device) was already a good choice.
Figure 62. Performance of MS Exchange Server 2003 local backup to Ultrium 960 with buffer size 32 – 1,024 KB
MS Exchange Server 2003
Buffer Size 32 - 1,024 KB
Performance of Local Backup to Ultrium 960
227
227
222
224
230
227
0.00
50.00
100.00
150.00
200.00
250.00
32
64 128 256 512 1,024
Buffer Size (KB)
MB/s