© 2012 IBM Corporation
DDP rebuild time
Hours
Time
Performance
Business Impact
No Impact
RAID
Performance Impact of a Drive Failure
Business
Impact
No Impact
4+ DAYS
2.5 DAYS
1.3 DAYS
Paralleled rebuild minimizes performance degradation
+ faster (8x) rebuilds results = no business impact!
Typical Rebuild Improvements Based on 24-drive Mixed Workload
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