HP XP7 Storage - Manual (Page 6)

Standard required time* RAID level Rotation per minute
35 minutes 6D+2P RAID 6
20 minutes 14D+2P
110 minutes 2D+2D RAID 1 10 Krpm
70 minutes 3D+1P RAID 5
35 minutes 7D+1P
35 minutes 6D+2P RAID 6
20 minutes 14D+2P
185 minutes 2D+2D RAID 1 7.2Krpm
120 minutes 3D+1P RAID 5
50 minutes 7D+1P
65 minutes 6D+2P RAID 6
25 minutes 14D+2P
*Data drive capacity is assumed to be 1 TB.
For flash drives (SSDs):
Standard required time* RAID level Number of parity groups
30 minutes 2D+2D RAID 1 From 1 to 4
20 minutes 3D+1P RAID 5
15 minutes 7D+1P
15 minutes 6D+2P RAID 6
10 minutes 14D+2P
*Flash drive capacity is assumed to be 1 TB.
For FMDs:
Standard required time* RAID level Number of parity groups
20 minutes 2D+2D RAID 1 From 1 to 4
10 minutes 3D+1P RAID 5
10 minutes 7D+1P
10 minutes 6D+2P RAID 6
5 minutes 14D+2P
*FMD capacity is assumed to be 1 TB.
When host I/Os are performed, the required shredding time is at least six times that of when no
host I/Os are performed. If a DKxxx-HxxxAT data drive is used for creating a parity group on an
encrypted data drive, the time required for shredding that parity group is the maximum time listed.
If the volumes to be shredded belong to drives of mixed types or mixed configurations, the longest
required times associated with the drive type or drive configuration apply to all volumes. Thus,
mixed types and configurations take more time for the volumes to become available for use than
when the drive type and drive configuration are the same. When you add drives or change drive
6 Overview of Volume Shredder