Advanced Backup to Disk Performance White Paper

Backup to NULL Device
Table 8. Backup to NULL Device
Specification Conc.
r
NULL Device
Transfe Rate
(MB/s)
Average
CPU Load %
Typical Files
LUN #1
1 45,57 8
Typical Files
LUN #1-4
2 67,34 13
Typical Files
LUN #1-4
4 92,80 21
Small Files
LUN #1
1 7,35 9
Small Files Initial Run
LUN #1-4
4 13,99 27
Small Files
LUN #1-4
4 14,23 23
Backup to Tape
Table 9. Backup to SDLT320
Specification Conc. SDLT320
1 Drive
Transfer Rate (MB/s)
Average
CPU Load %
SDLT320
2 Drives
Transfer Rate (MB/s)
Average
CPU Load %
Typical Files
LUN #1
1 28,84 6 N/A N/A
Typical Files
LUN #1-4
2 N/A N/A N/A N/A
Typical Files
LUN #1-4
4 N/A N/A 62,87 16
Small Files
LUN #1
1 N/A N/A N/A N/A
Small Files
LUN #1-4
4 12,56 20 N/A N/A
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