Dell Equallogic PS6010e User Manual

March 2013 Dell EqualLogic Configuration Guide v14.1 4-34
4.4 RAID 5 drive layouts and total reported usable storage
RAID 5 (striped disks with distributed parity) will combine N disks in an arrangement where each stripe
consists of N–1 disks that contain data blocks plus 1 disk that contains a parity block. For each stripe,
the parity block will be placed on a different disk ensuring that the parity blocks are not located on a
single disk in the RAID set. RAID 5 implementations can tolerate a single drive failure without data loss.
Table 14 shows the drive layouts that are enforced when using a RAID 5 policy based on the number
of drives in each array/hot spare configuration, and the total usable storage available for each model.
Table 14 RAID 5 drive layouts and reported usable storage available with hot spares (in GB)
Disk drives Hot spare No hot spare
6
5 Data/Parity + 1 Hot Spare
RAID Policy for RAID 5 without a hot spare
is not supported
7
6 Data/Parity + 1 Hot-spare
8
7 Data/Parity + 1 Hot-spare
12
(a)
11 Data/Parity + 1 Hot-spare
14
13 Data/Parity + 1 Hot-spare
16
15 Data/Parity + 1 Hot-spare
24
(a)(b)
23 Data/Parity + 1 Hot-spare
48
(b)
46 Data/Parity + 2 Hot-spares
(a) PS4100/PS6100 models only
(b) 24 and 48 drive arrays implement multiple RAID 5 sets within a chassis
Total reported usable storage when using hot spares: All models prior to PS4100/PS6100
Drive
qty /
Size
50
(a)
100
(a)
74 146 250 300 400 450 500 600 750 1000 2000 3000
7
(b)
-
- - - 1111 - - - - - - - - -
8
(c)
-
- - - 1333 - - - - - - - - -
14
(d)
-
- 792 - 2671 - 4281 - 5354 - - - - -
16
621 1244 - 1827 3118 3744 4995 5622 6247 7500 9378 12508 25456 38461
48
-
- - - - - - - 19452 23345 - 38916 74580 115394
Total reported usable storage when using hot spares: PS41x0/PS61x0
Drive
qty /
Size
146 200
(e)
300 400
(e)
500 600 900 1000 2000 3000
6
- - - - 1781 2129 - 3563 7280 11008
12
1300 1843 2672 3696 4454 5355 8038 8929 18186 27473
14
1565 - 3206 - 5353 6426 9645 10719 - -
24
2744 3880 5620 7772 9379 11253 16855 18728 38184 57698
(a) Solid State Disk
(b) Legacy PS50E
(c) PS4000E and PS6000E only
(d) Legacy PS70E,PS100E, PS100X, PS200E, and PS300E
(e) PS6100S (SSD) only

Dell Equallogic PS6010e Specifications

General

Brand	Dell
Model	Equallogic PS6010e
Category	Storage
Language	English