Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 13

GB/hr, Backup, Restore

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ECG075.0997 (cont.) DLT Tape Array II ... 120 100 80 GB/hr 60 40 20 0 1 to 1 1 to 2 2 to 2 2 to 3 2 to 4 2 to 4* 2 to 4** 3 to 3 3 to 6 4 to 4 4 to 8 Backup Restore Figure 8: High-performance backup and restore under Novell IntranetWare with different proportions of SCSI cards to tape drives (shown at the bases of the columns). *Hardware compression turned off. **This test used 4:1 compression; all others, 2:1 compression. 2:1 2:1 2:1 2:1 2:1 2:1 (but drive compression was turned off) 4:1 2:1 2:1 2:1 2:1 1 1 29.03 29.49 1 2 55.81 39.62 2 2 59.70 52.17 2 3 81.63 59.80 2 4 104.35 79.22 2 4 66.67 79.12 2 4 118.98 79.55 3 3 79.65 69.10 3 6 90.45 51.43 4 4 94.99 72.00 4 8 89.55 57.05 Table 3: Test data for performance test of backups under Novell IntranetWare.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
0
20
40
60
80
100
120
1 to 1
1 to 2
2 to 2
2 to 3
2 to 4
2 to 4*
2 to 4**
3 to 3
3 to 6
4 to 4
4 to 8
GB/hr
Backup
Restore
Figure 8: High-performance backup and restore under Novell IntranetWare with different proportions of
SCSI cards to tape drives (shown at the bases of the columns).
*Hardware compression turned off.
**This test used 4:1 compression; all others, 2:1 compression.
2:1
1
1
29.03
29.49
2:1
1
2
55.81
39.62
2:1
2
2
59.70
52.17
2:1
2
3
81.63
59.80
2:1
2
4
104.35
79.22
2:1 (but drive compression was
turned off)
2
4
66.67
79.12
4:1
2
4
118.98
79.55
2:1
3
3
79.65
69.10
2:1
3
6
90.45
51.43
2:1
4
4
94.99
72.00
2:1
4
8
89.55
57.05
Table 3: Test data for performance test of backups under Novell IntranetWare.
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