Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 18

GB/hr, Data Compression

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ECG075.0997 (cont.) DLT Tape Array II ... 180 160 140 120 100 GB/hr 80 60 40 20 0 1 Job 2 Jobs 4 Jobs Data Compression 2:1 4:1 8 Jobs Figure 11: Concurrent backup performance running Cheyenne ARCserve 6.0 (image option) under Windows NT. Jobs SCSI Cards 1 4 2 1 2 2 2 2 2 4 2 4 4 2 4 4 4 4 8 4 DLTs 8 2 2 4 4 8 4 4 8 8 RAIT Smart Cards Drives Level per Job per Job 0 4 56 No RAIT 2 28 No RAIT 2 28 0 2 28 0 2 28 0 2 28 No RAIT 1 14 No RAIT 1 14 0 1 14 No RAIT 1 channel 7 2:1 Backup 4:1 Backup (GB/Hr) (GB/Hr) 83.56 54.02 60.05 97.03 118.36 135.64 107.71 121.88 154.27 165.26 82.48 57.71 68.79 107.11 136.52 137.15 112.73 135.04 147.14 164.18 Table 6: Test data for concurrent backup tests under Windows NT. • Jobs: Number of Cheyenne backup jobs started concurrently under Windows NT. • SCSI Cards: Number of Wide-Ultra SCSI-3 cards used to connect to the 35/70 GB DLT drives. • DLT: Number of tape drives used. • RAIT Level: When a job used more than one drive, the drives were configured as RAIT 0. • SMART Cards - Number of SMART-2/P Array Controllers used per job (to help determine loading factors). • Drives per Job: Number of hard disk drives per job (to give perspective on feed source to each tape job running). • Note: In all testing, care was taken to balance the loading of the two PCI buses.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
0
20
40
60
80
100
120
140
160
180
1 Job
2 Jobs
4 Jobs
8 Jobs
GB/hr
2:1
4:1
Data Compression
Figure 11: Concurrent backup performance running Cheyenne ARCserve 6.0
(image option) under Windows NT.
Jobs
SCSI
Cards
DLTs
RAIT
Level
Smart Cards
per Job
Drives
per Job
2:1 Backup
(GB/Hr)
4:1 Backup
(GB/Hr)
1
4
8
0
4
56
83.56
82.48
2
1
2
No RAIT
2
28
54.02
57.71
2
2
2
No RAIT
2
28
60.05
68.79
2
2
4
0
2
28
97.03
107.11
2
4
4
0
2
28
118.36
136.52
2
4
8
0
2
28
135.64
137.15
4
2
4
No RAIT
1
14
107.71
112.73
4
4
4
No RAIT
1
14
121.88
135.04
4
4
8
0
1
14
154.27
147.14
8
4
8
No RAIT
1 channel
7
165.26
164.18
Table 6: Test data for concurrent backup tests under Windows NT.
•
Jobs: Number of Cheyenne backup jobs started concurrently under Windows NT.
•
SCSI Cards: Number of Wide-Ultra SCSI-3 cards used to connect to the 35/70 GB DLT drives.
•
DLT: Number of tape drives used.
•
RAIT Level: When a job used more than one drive, the drives were configured as RAIT 0.
•
SMART Cards – Number of SMART-2/P Array Controllers used per job (to help determine
loading factors).
•
Drives per Job: Number of hard disk drives per job (to give perspective on feed source to each
tape job running).
•
Note:
In all testing, care was taken to balance the loading of the two PCI buses.
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