Table 39. RAID capacities for High Performance Flash Enclosures Gen2 (continued)
Flash Tier 0,
Flash Tier 1, or
Flash Tier 2
drives disk size
Physical
capacity of
Flash Tier
0, Flash
Tier 1, or
Flash Tier
2 drives set Rank type
Effective capacity of one rank in number of extents
RAID-10 arrays RAID-5 arrays RAID-6 arrays
3 + 3 4 + 4 6 + P 7 + P 5 + P + Q 6 + P + Q
3.2 TB 51.2 TB FB Lg Ext 8637 11527 n/a n/a 14417 17307
FB Sm Ext 552771 737753 n/a n/a 922733 1107703
CKD Lg Ext 9687 12928 n/a n/a 16170 19412
CKD Sm Ext 513414 685225 n/a n/a 857029 1028843
3.8 TB 61.4 TB FB Lg Ext 10371 13839 n/a n/a 17308 20776
FB Sm Ext 663766 885747 n/a n/a 1107725 1329703
CKD Lg Ext 11632 15522 n/a n/a 19412 23302
CKD Sm Ext 616506 822682 n/a n/a 1028848 1235028
7.6 TB 123 TB FB Lg Ext n/a n/a n/a n/a 34650 41587
FB Sm Ext n/a n/a n/a n/a 2217663 2661631
CKD Lg Ext n/a n/a n/a n/a 38863 46643
CKD Sm Ext n/a n/a n/a n/a 2059760 2472118
RAID 5 array capacities for standard drive enclosures
The following table lists the RAID 5 array capacities for fully populated standard
storage enclosures. RAID 5 is not supported for drives larger than 1 TB and
requires a request for price quote (RPQ). For information, contact your sales
representative.
Table 40. RAID capacities for RAID 5 arrays
Drive size and
type
Total physical
capacity (GB)
per drive set
1, 2
Fixed block
(FB) or count
key data (CKD)
Effective capacity in GB
(number of extents)
2, 3
Rank with RAID 5 array
6 + P 7 + P
300 GB disk
drives
4,800 FB 1,664.30
(1,550)
1,947.77
(1,814)
CKD 1,644.16
(1,738)
1,924.18
(2,034)
400 2.5-in. GB
flash drives
(SSD)
6,400 FB 2,289.22
(2,132)
2,676.84
(2,493)
CKD 2,261.90
(2,391)
2,645.03
(2,796)
600 GB disk
drives
9,600 FB 3,383.73
(3,156)
3,959.96
(3,688)
CKD 3,348.86
(3,540)
3,912.68
(4,136)
800 GB 2.5-in
flash drive
(SSD)
12,800 FB 4,617.09
(4,300)
5,392.33
(5,022)
CKD 4,561.64
(4,822)
5,328.85
(5,633)
Chapter 4. Storage system physical configuration 95
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