Shredding Times - Hitachi G1000 User Manual

Shredding times

The following tables show the standard required times for shredding without
host I/O, listed by drive type. The same standard times also apply to
shredding encrypted drives. The standard required time in each table
assumes the use of OPEN-V volumes.
For DKxxx-JxxxSS/KxxxSS/HxxxSS disk drives:
Rotation per
minute
15 Krpm
10 Krpm
7.2Krpm
*Data drive capacity is assumed to be 1 TB.
For flash drives (SSDs):
Number of parity
groups
From 1 to 4
*Flash drive capacity is assumed to be 1 TB.
For FMDs:
1–4
Hitachi Virtual Storage Platform G1000 Hitachi Volume Shredder User Guide
RAID level
RAID 1
RAID 5
RAID 6
RAID 1
RAID 5
RAID 6
RAID 1
RAID 5
RAID 6
RAID level
RAID 1
RAID 5
RAID 6
Overview of Hitachi Volume Shredder
Standard required
2D+2D 85 minutes
3D+1P 65 minutes
7D+1P 30 minutes
6D+2P 35 minutes
14D+2P 20 minutes
2D+2D 110 minutes
3D+1P 70 minutes
7D+1P 35 minutes
6D+2P 35 minutes
14D+2P 20 minutes
2D+2D 185 minutes
3D+1P 120 minutes
7D+1P 50 minutes
6D+2P 65 minutes
14D+2P 25 minutes
Standard required time*
2D+2D 30 minutes
3D+1P 20 minutes
7D+1P 15 minutes
6D+2P 15 minutes
14D+2P 10 minutes
time*