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.

Since each volume is overwritten three times with dummy data by default, Volume Shredder requires three times the time listed in the table below. If you want to change the default settings, use the formula shown above to calculate the time required.

(VSP G1x00 and VSP F1500) For DKxxx-JxxxSS/KxxxSS/HxxxSS disk drives

Rotation per minute RAID level Standard required time*
15 Krpm RAID 1 2D+2D 90 minutes
RAID 5 3D+1P 70 minutes
7D+1P 35 minutes
RAID 6 6D+2P 40 minutes
14D+2P 20 minutes
10 Krpm RAID 1 2D+2D 140 minutes
RAID 5 3D+1P 90 minutes
7D+1P 40 minutes
RAID 6 6D+2P 45 minutes
14D+2P 20 minutes
7.2 Krpm RAID 1 2D+2D 200 minutes
RAID 5 3D+1P 120 minutes
7D+1P 50 minutes
RAID 6 6D+2P 60 minutes
14D+2P 25 minutes
*Data drive capacity is assumed to be 1 TB.

(VSP G1x00 and VSP F1500) For flash drives (SSDs)

Number of parity groups RAID level Standard required time*
From 1 to 4 RAID 1 2D+2D 25 minutes
RAID 5 3D+1P 20 minutes
7D+1P 15 minutes
RAID 6 6D+2P 20 minutes
14D+2P 10 minutes
*Flash drive capacity is assumed to be 1 TB.

(VSP G1x00 and VSP F1500) For FMDs

Number of parity groups RAID level Standard required time*
From 1 to 4 RAID 1 2D+2D 20 minutes
RAID 5 3D+1P 10 minutes
7D+1P 10 minutes
RAID 6 6D+2P 10 minutes
14D+2P 10 minutes
*FMD capacity is assumed to be 1 TB.

(VSP Fx00 models and VSP Gx00 models) For DKxxx-JxxxSS/KxxxSS/HxxxSS disk drives

Rotation per minuteDrive capacityRAID levelStandard required time (minute)
VSP G130VSP G150VSP G350/VSP F350VSP G370/VSP F370VSP G700/VSP F700VSP G900/VSP F900
15 Krpm300 GBRAID 12D+2D120105100959590
RAID 52D+1P130110105959595
3D+1P907570656565
4D+1P706555505050
5D+1P555045404040
6D+1P454540353535
7D+1P404035303030
8D+1P353530303025
RAID 64D+2P706055505050
6D+2P504540353535
8D+2P403530303025
10D+2P303025252520
12D+2P302520252520
14D+2P252520202015
600 GBRAID 1RAID 52D+2D1109590858580
2D+1P1207570757575
3D+1P805555555555
4D+1P654540404040
5D+1P504035353535
6D+1P453530252525
7D+1P403530252525
8D+1P353530252525
RAID 64D+2P655550454545
6D+2P454035303030
8D+2P353025252525
10D+2P302520202020
12D+2P252520202015
14D+2P252015151515
10 Krpm600 GBRAID 12D+2D160135130125125120
RAID 52D+1P160130125115120120
3D+1P1109085808585
4D+1P857065606565
5D+1P706055505050
6D+1P605045454545
7D+1P504540404040
8D+1P454035353535
RAID 64D+2P857570656565
6D+2P605550454545
8D+2P454035353535
10D+2P403530303030
12D+2P353025252525
14D+2P303025202020
1.2 TBRAID 12D+2D155140135130130130
RAID 52D+1P160125125125125125
3D+1P1109085858585
4D+1P857065656565
5D+1P705555555555
6D+1P605045454545
7D+1P504540404040
8D+1P454035353535
RAID 64D+2P857065656065
6D+2P605045454545
8D+2P454035353535
10D+2P403530303030
12D+2P353025252525
14D+2P302520202020
1.8 TBRAID 12D+2D155130125105105105
RAID 52D+1P155125120959590
3D+1P1058580656560
4D+1P806560504545
5D+1P655550454040
6D+1P554540303030
7D+1P504035353030
8D+1P453530252525
RAID 64D+2P856560454545
6D+2P504035303030
8D+2P453530252525
10D+2P403025202020
12D+2P352520152020
14D+2P302520151515
2.4 TBRAID 12D+2D145125120115115115
RAID 52D+1P145125120120120115
3D+1P1008580757575
4D+1P756560606055
5D+1P655550505045
6D+1P554540404035
7D+1P504035353530
8D+1P453530303025
RAID 64D+2P806560606055
6D+2P504040404035
8D+2P453530303030
10D+2P353025252520
12D+2P352520202020
14D+2P302520202015
7.2 Krpm6.0 TBRAID 12D+2D215165160160160160
RAID 52D+1P210155150135135135
3D+1P140105100909090
4D+1P1108075707065
5D+1P906560555555
6D+1P755550454545
7D+1P655045404040
8D+1P604540353535
RAID 64D+2P1108075656565
6D+2P755550454545
8D+2P604540353535
10D+2P504035303025
12D+2P403530252525
14D+2P353025252520
10.0 TBRAID 12D+2D210165160160155155
RAID 52D+1P205155150130115115
3D+1P1409090858080
4D+1P1058075656060
5D+1P856560555050
6D+1P705550454040
7D+1P655045403535
8D+1P554540353030
RAID 64D+2P1058075706060
6D+2P755550454040
8D+2P554540353030
10D+2P454035302525
12D+2P403530252020
14D+2P353530252020

(VSP Fx00 models and VSP Gx00 models) For flash drives (SSDs)

Drive capacityRAID levelStandard required time (minute)
VSP G130VSP G150VSP G350/VSP F350VSP G370/VSP F370VSP G700/VSP F700VSP G900/VSP F900
480 GBRAID 12D+2D152015151515
RAID 52D+1P252015151515
3D+1P201510101010
4D+1P201510101010
5D+1P151510101010
6D+1P15105555
7D+1P15105555
8D+1P15105555
RAID 64D+2P201510101010
6D+2P201055105
8D+2P201055105
10D+2P20105555
12D+2P15105555
14D+2P15105555
960 GBRAID 12D+2D152015151515
RAID 52D+1P252015151515
3D+1P201510101010
4D+1P201510101010
5D+1P15151010105
6D+1P15105555
7D+1P15105555
8D+1P15105555
RAID 64D+2P201510101010
6D+2P20105555
8D+2P20105555
10D+2P20105555
12D+2P15105555
14D+2P15105555
1.9 TBRAID 12D+2D152015151515
RAID 52D+1P252015151515
3D+1P201510101010
4D+1P201510101010
5D+1P151510101010
6D+1P15105555
7D+1P15105555
8D+1P15105555
RAID 64D+2P201510101010
6D+2P20105555
8D+2P20105555
10D+2P20105555
12D+2P15105555
14D+2P15105555
3.8 TBRAID 12D+2D151515151515
RAID 52D+1P251515151515
3D+1P201010101010
4D+1P201010101010
5D+1P151010101010
6D+1P151010101010
7D+1P1555555
8D+1P1555555
RAID 64D+2P201010101010
6D+2P201010101010
8D+2P201010555
10D+2P2055555
12D+2P2055555
14D+2P2055555
7.6 TBRAID 12D+2D151515151515
RAID 52D+1P251515151510
3D+1P201010101010
4D+1P201010101010
5D+1P151010101010
6D+1P1555555
7D+1P1555555
8D+1P1555555
RAID 64D+2P201010101010
6D+2P201010555
8D+2P201010555
10D+2P2055555
12D+2P2055555
14D+2P2055555
15.0 TBRAID 12D+2D202020202020
RAID 52D+1P352020202020
3D+1P251515151515
4D+1P251515151515
5D+1P201010101010
6D+1P201010101010
7D+1P201010101010
8D+1P201010101010
RAID 64D+2P301515151510
6D+2P301510101010
8D+2P301510101010
10D+2P301510101010
12D+2P201010101010
14D+2P201010101010

(VSP Fx00 models and VSP Gx00 models) For FMDs

Drive capacityRAID level Standard required time (minute)
VSP G350/VSP F350VSP G370/VSP F370VSP G700/VSP F700VSP G900/VSP F900
3.2 TBRAID 1 2D+2D 5 5 5 5
RAID 5 2D+1P5 5 5 5
3D+1P 5 5 5 5
4D+1P 5 5 5 5
5D+1P 5 5 5 5
6D+1P 5 5 5 5
7D+1P 5 5 5 5
8D+1P5 5 5 5
RAID 6 4D+2P 5 5 5 5
6D+2P 5 5 5 5
8D+2P 5 5 5 5
10D+2P 5 5 5 5
12D+2P 5 5 5 5
14D+2P 5 5 5 5
6.4 TB, 13.0 TBRAID 1 2D+2D 10 10 10 10
RAID 5 2D+1P10 10 10 10
3D+1P 5 5 5 5
4D+1P 5 5 5 5
5D+1P 5 5 5 5
6D+1P 5 5 5 5
7D+1P 5 5 5 5
8D+1P5 5 5 5
RAID 6 4D+2P 5 5 5 5
6D+2P 5 5 5 5
8D+2P 5 5 5 5
10D+2P 5 5 5 5
12D+2P 5 5 5 5
14D+2P 5 5 5 5

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-HxxxSS 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 configurations, you should arrange the drives into those with the same standard required times, and then add drives starting with those volume types requiring the least shredding time.

When the emulation type for mainframe is selected for the LDEV, Fibre channel connectivity for mainframe is required. When the emulation type for open systems is selected, a channel for open systems is required.