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 G350/VSP F350VSP G370/VSP F370VSP G700/VSP F700VSP G900/VSP F900
15 Krpm300 GBRAID 12D+2D120100959590
RAID 52D+1P130105959595
3D+1P9070656565
4D+1P7055505050
5D+1P5545404040
6D+1P4540353535
7D+1P4035303030
8D+1P3530303025
RAID 64D+2P7055505050
6D+2P5040353535
8D+2P4030303025
10D+2P3025252520
12D+2P3020252520
14D+2P2520202015
600 GBRAID 1RAID 52D+2D11090858580
2D+1P12070757575
3D+1P8055555555
4D+1P6540404040
5D+1P5035353535
6D+1P4530252525
7D+1P4030252525
8D+1P3530252525
RAID 64D+2P6550454545
6D+2P4535303030
8D+2P3525252525
10D+2P3020202020
12D+2P2520202015
14D+2P2515151515
10 Krpm600 GBRAID 12D+2D160130125125120
RAID 52D+1P160125115120120
3D+1P11085808585
4D+1P8565606565
5D+1P7055505050
6D+1P6045454545
7D+1P5040404040
8D+1P4535353535
RAID 64D+2P8570656565
6D+2P6050454545
8D+2P4535353535
10D+2P4030303030
12D+2P3525252525
14D+2P3025202020
1.2 TBRAID 12D+2D155135130130130
RAID 52D+1P160125125125125
3D+1P11085858585
4D+1P8565656565
5D+1P7055555555
6D+1P6045454545
7D+1P5040404040
8D+1P4535353535
RAID 64D+2P8565656065
6D+2P6045454545
8D+2P4535353535
10D+2P4030303030
12D+2P3525252525
14D+2P3020202020
1.8 TBRAID 12D+2D155125105105105
RAID 52D+1P155120959590
3D+1P10580656560
4D+1P8060504545
5D+1P6550454040
6D+1P5540303030
7D+1P5035353030
8D+1P4530252525
RAID 64D+2P8560454545
6D+2P5035303030
8D+2P4530252525
10D+2P4025202020
12D+2P3520152020
14D+2P3020151515
2.4 TBRAID 12D+2D145120115115115
RAID 52D+1P145120120120115
3D+1P10080757575
4D+1P7560606055
5D+1P6550505045
6D+1P5540404035
7D+1P5035353530
8D+1P4530303025
RAID 64D+2P8060606055
6D+2P5040404035
8D+2P4530303030
10D+2P3525252520
12D+2P3520202020
14D+2P3020202015
7.2 Krpm6.0 TBRAID 12D+2D215160160160160
RAID 52D+1P210150135135135
3D+1P140100909090
4D+1P11075707065
5D+1P9060555555
6D+1P7550454545
7D+1P6545404040
8D+1P6040353535
RAID 64D+2P11075656565
6D+2P7550454545
8D+2P6040353535
10D+2P5035303025
12D+2P4030252525
14D+2P3525252520
10.0 TBRAID 12D+2D210160160155155
RAID 52D+1P205150130115115
3D+1P14090858080
4D+1P10575656060
5D+1P8560555050
6D+1P7050454040
7D+1P6545403535
8D+1P5540353030
RAID 64D+2P10575706060
6D+2P7550454040
8D+2P5540353030
10D+2P4535302525
12D+2P4030252020
14D+2P3530252020

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

Drive capacityRAID levelStandard required time (minute)
VSP G130VSP G350/VSP F350VSP G370/VSP F370VSP G700/VSP F700VSP G900/VSP F900
480 GBRAID 12D+2D1515151515
RAID 52D+1P2515151515
3D+1P2010101010
4D+1P2010101010
5D+1P1510101010
6D+1P155555
7D+1P155555
8D+1P155555
RAID 64D+2P2010101010
6D+2P2055105
8D+2P2055105
10D+2P205555
12D+2P155555
14D+2P155555
960 GBRAID 12D+2D1515151515
RAID 52D+1P2515151515
3D+1P2010101010
4D+1P2010101010
5D+1P151010105
6D+1P155555
7D+1P155555
8D+1P155555
RAID 64D+2P2010101010
6D+2P205555
8D+2P205555
10D+2P205555
12D+2P155555
14D+2P155555
1.9 TBRAID 12D+2D1515151515
RAID 52D+1P2515151515
3D+1P2010101010
4D+1P2010101010
5D+1P1510101010
6D+1P155555
7D+1P155555
8D+1P155555
RAID 64D+2P2010101010
6D+2P205555
8D+2P205555
10D+2P205555
12D+2P155555
14D+2P155555
3.8 TBRAID 12D+2D1515151515
RAID 52D+1P2515151515
3D+1P2010101010
4D+1P2010101010
5D+1P1510101010
6D+1P1510101010
7D+1P155555
8D+1P155555
RAID 64D+2P2010101010
6D+2P2010101010
8D+2P2010555
10D+2P205555
12D+2P205555
14D+2P205555
7.6 TBRAID 12D+2D1515151515
RAID 52D+1P2515151510
3D+1P2010101010
4D+1P2010101010
5D+1P1510101010
6D+1P155555
7D+1P155555
8D+1P155555
RAID 64D+2P2010101010
6D+2P2010555
8D+2P2010555
10D+2P205555
12D+2P205555
14D+2P205555
15.0 TBRAID 12D+2D2020202020
RAID 52D+1P3520202020
3D+1P2515151515
4D+1P2515151515
5D+1P2010101010
6D+1P2010101010
7D+1P2010101010
8D+1P2010101010
RAID 64D+2P3015151510
6D+2P3010101010
8D+2P3010101010
10D+2P3010101010
12D+2P2010101010
14D+2P2010101010

(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.