Release Notes
PS Series capacity
26 Dell PS Series Configuration Guide
7.2 RAID 10 drive layouts and total reported usable storage
Using a RAID 10 policy, Table 13 shows the drive layouts that are enforced based on the number of drives in
each array/hot spare configuration, and the total usable storage available for each model.
RAID 10 (mirrored sets in a striped set) combines two high performance RAID types: RAID 0 and RAID 1. A
RAID 10 is created by first building a series of two disk RAID 1 mirrored sets, and then distributing data over
those mirrors. RAID 10 implementations can tolerate one drive failure per mirrored pair.
RAID 10 drive layouts and total reported usable storage available with hot spares (in GB)
Disk drives
Hot spare
No hot spare
6
4 data (2 mirrors) + 2 hot spares
6 data (3 mirrors)
7
6 data (3 mirrors) + 1 hot spare
Not supported
8
6 data (3 mirrors) + 2 hot spares
8 data (4 mirrors)
12
(c)
10 data (5 mirrors) + 2 hot spares
12 data (7 mirrors)
14
12 data (6 mirrors) + 2 hot spares
14 data (7 mirrors)
16
14 data (7 mirrors) + 2 hot- spares
16 data (8 mirrors)
24
(c)
22 data (11 mirrors) + 2 hot spares
24 data (12 mirrors)
48
46 data (23 mirrors) + 2 hot spares
Not supported
a. Not supported; an even number of drives is required by RAID 10
b. 48-drive arrays cannot implement a no hot-spare policy
c. PS4100/PS6100 models only
Total reported usable storage when using hot spares: All models prior to PS4100/PS6100
Disk
qty.
50
(a)
100
(a)
74
146
250
300
400
450
500
600
750
1000
2000
3000
7
(b)
-
-
-
-
666
-
-
-
-
-
-
-
-
-
8
(c)
-
-
-
-
666
-
-
-
-
-
-
-
-
-
14
(d)
-
-
395
-
1333
-
2135
-
2671
-
4013
-
-
-
16
309
621
-
913
1556
1867
2492
2805
3117
3744
4683
6247
12749
19230
48
-
-
-
-
-
-
-
-
10647
12779
-
21306
40840
63191
a. Solid-state disk
b. Legacy PS50E
c. PS4000E and PS6000E only
d. Legacy PS70E, PS100E, PS100X, PS200E, and PS300E
e. PS6100S (SSD) only