Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 30

Test A, Test B, Test C

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ECG075.0997 (cont.) DLT Tape Array II ... Test A Perform baseline analysis using Cheyenne's RAWREAD.EXE to obtain ratings of drive performance. Test B Perform a backup of a 2-GB data set per drive. This single job image backup to DLT Array II with four 35/70 GB DLT drives (driven by two Wide-Ultra SCSI-3/PCI cards) was written at RAIT-0. Test C Perform four backup jobs of four 2-GB data sets from four logical drives. GB/hr 500 450 400 350 1 300 2 250 3 200 4 150 100 50 0 A B C Figure 17: Results of tests A, B, and C in four environments. 1. ProLiant 5000, embedded SCSI hard diskdrives (53C825) 2. ProLiant 5000, one SMART-2/P Array Controller, 12 4-GB Fast-Wide SCSI drives 3. ProLiant 5000, two SMART-2/P Array Controllers, 24 4-GB Fast-Wide SCSI drives 4. ProLiant 6000, four SMART-2/P Array Controllers, fifty-six 4 GB Fast-Wide SCSI drives 33 GB/hr 30 GB/hr 55 GB/hr 126 GB/hr 48 GB/hr 107 GB/hr 251 GB/hr 65 GB/hr 115 GB/hr 454 GB/hr 84.5 GB/hr 135 GB/hr Table 12: Relationship between disk drive feed speed and backup performance.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
Test A
Perform baseline analysis using Cheyenne’s RAWREAD.EXE to obtain ratings of drive
performance.
Test B
Perform a backup of a 2-GB data set per drive. This single job image backup to DLT Array II
with four 35/70 GB DLT drives (driven by two Wide-Ultra SCSI-3/PCI cards) was written at
RAIT-0.
Test C
Perform four backup jobs of four 2-GB data sets from four logical drives.
0
50
100
150
200
250
300
350
400
450
500
A
B
C
1
2
3
4
GB/hr
Figure 17: Results of tests A, B, and C in four environments.
1.
ProLiant 5000, embedded SCSI hard
diskdrives (53C825)
33 GB/hr
30 GB/hr
55 GB/hr
2.
ProLiant 5000, one SMART-2/P Array
Controller, 12 4-GB Fast-Wide SCSI
drives
126 GB/hr
48 GB/hr
107 GB/hr
3.
ProLiant 5000, two SMART-2/P Array
Controllers, 24 4-GB Fast-Wide SCSI
drives
251 GB/hr
65 GB/hr
115 GB/hr
4.
ProLiant 6000, four SMART-2/P Array
Controllers, fifty-six 4 GB Fast-Wide
SCSI drives
454 GB/hr
84.5 GB/hr
135 GB/hr
Table 12: Relationship between disk drive feed speed and backup performance.
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