Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 22

GB/hr

Get Compaq ProLiant 6000 PDF manuals and user guides View all Compaq ProLiant 6000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 22 highlights

ECG075.0997 (cont.) DLT Tape Array II ... 70 GB/hr 60 50 40 30 20 10 0 2-4, 2:1 4-4, 2:1 2-4, 4:1 RAIT-5 (CPU use = 41%) RAIT-0 (CPU use = 7%) 4-4, 4:1 Figure 13: RAIT-5 and RAIT-0 performance with various proportions of cards to drives and two compression ratios (shown at bases of columns). 2 4 4 4 2 4 4 4 2:1 56.16 59.88 7% 2:1 48.66 55.56 14% 4:1 60.84 61.5 1% 4:1 49.92 57.72 16% Table 8: RAIT/compression ratio test results. CPU use was 41 percent when using RAIT-5 and 7 percent when using RAIT-0.

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
7
%
(cont.)
DLT Tape Array II
ECG075.0997
0
10
20
30
40
50
60
70
2-4,
2:1
4-4,
2:1
2-4,
4:1
4-4,
4:1
GB/hr
RAIT-5 (CPU use = 41%)
RAIT-0 (CPU use = 7%)
Figure 13: RAIT-5 and RAIT-0 performance with various proportions of cards to drives
and two compression ratios (shown at bases of columns).
2
4
2:1
56.16
59.88
7%
4
4
2:1
48.66
55.56
14%
2
4
4:1
60.84
61.5
1%
4
4
4:1
49.92
57.72
16%
Table 8: RAIT/compression ratio test results.
CPU use was 41 percent when using
RAIT-5 and 7 percent when using RAIT-0.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.