Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 16

Compression, 1 Compression

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ECG075.0997 (cont.) DLT Tape Array II ... The following test results are included to demonstrate the performance increase achieved when using even larger systems with faster feed speeds. These tests differ only in that a ProLiant 6000 was used, with three Pentium Pro processors and two additional SMART-2/P Controllers with 56 drives. 100 80 GB/hr 60 40 20 0 1 to 1 1 to 2 2 to 2 2 to 4 4 to 4 3 to 6 4 to 6 4 to 8 2:1 Compression 4:1 Compression Figure 10: Backup speed results on the ProLiant 6000 test under Windows NT, with various proportions of SCSI cards and 35/70 GB DLT drives (shown at bases of columns). 1 1 1 1 1 2 1 2 2 1 2 4 1 4 4 1 3 6 1 4 6 1 4 8 29.88 52.70 58.92 76.54 78.93 84.96 84.51 83.56 32.17 55.17 67.38 86.50 84.50 86.23 85.02 82.48 Table 5: Test data for local image backups to various numbers of DLT drives under Windows NT using the ProLiant 6000.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
The following test results are included to demonstrate the performance increase achieved when
using even larger systems with faster feed speeds. These tests differ only in that a ProLiant
6000 was used, with three Pentium Pro processors and two additional SMART-2/P Controllers
with 56 drives.
0
20
40
60
80
100
GB/hr
2:1 Compression
4:1 Compression
1 to 1
1 to 2
2 to 2
2 to 4
4 to 4
3 to 6
4 to 6
4 to 8
Figure 10: Backup speed results on the ProLiant 6000 test under Windows NT,
with various proportions of SCSI cards and 35/70 GB DLT drives (shown at bases of columns).
1
1
1
29.88
32.17
1
1
2
52.70
55.17
1
2
2
58.92
67.38
1
2
4
76.54
86.50
1
4
4
78.93
84.50
1
3
6
84.96
86.23
1
4
6
84.51
85.02
1
4
8
83.56
82.48
Table 5: Test data for local image backups to various numbers of DLT drives
under Windows NT using the ProLiant 6000.
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