Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 9

Image Backup, Image Restore, By File Restore

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ECG075.0997 (cont.) DLT Tape Array II ... 60 50 40 GB/hr 30 20 10 0 1 to 1 1 to 2 2 to 2 2 to 4 4 to 4 Image Backup Image Restore By File Backup By File Restore Figure 6: Performance results from tests comparing various proportions of 53c875 SCSI cards to DLT drives (shown at the bases of the columns). Image Backup/Restore 1 1 1 2 2 2 2 4 4 4 Backup/Restore by File 1 1 1 2 2 2 2 4 4 4 34.38 51.91 56.54 51.91 49.73 34.95 45.51 44.96 44.96 43.13 21.89 31.09 56.54 31.15 30.21 31.79 47.89 59.00 57.62 58.53 Table 1: Test data for tape drives versus SCSI card test  Windows NT.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
0
10
20
30
40
50
60
1 to 1
1 to 2
2 to 2
2 to 4
4 to 4
Image Backup
Image Restore
By File Backup
By File Restore
GB/hr
Figure 6: Performance results from tests comparing various proportions of
53c875 SCSI cards to DLT drives (shown at the bases of the columns).
Image Backup/Restore
1
1
34.38
21.89
1
2
51.91
31.09
2
2
56.54
56.54
2
4
51.91
31.15
4
4
49.73
30.21
Backup/Restore by File
1
1
34.95
31.79
1
2
45.51
47.89
2
2
44.96
59.00
2
4
44.96
57.62
4
4
43.13
58.53
Table 1: Test data for tape drives versus SCSI card test
Windows NT.
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