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140 DS6000 Series: Concepts and Architecture
The following figures are for an 8 DDMs array. The user can also select a 4 DDMs array
configuration.
Figure 8-8 CKD RAID rank capacity (8 DDMs array)
Note: IBM plans to offer Capacity Magic for DS6000 in the future. Capacity Magic
calculates the physical and effective storage capacity of a DS6000. IBM sales
representatives and IBM Business Partners can download this tool from the IBM Web site.
The values presented here are intended to be used only until Capacity Magic is available.
CKD RAID rank capacity
Notes
There may be space left over when defining the devices shown in the table.
Devices that are not a multiple of 1113 cylinders will use additional space on the disk
subsystem as the allocation unit is an extent of this size.
RAID type
RAID
type
DDM
capacity
A
rray
Format Extents
Binary
GB
Decimal
GB
3390-3
devices
3390-9
devices
32760 cyl
devices
65520 cyl
devices
RAID10 73GB RAID10 73GB 3+3+2S
213 187.66 201.50 71 23 7 3
RAID10 73GB RAID10 73GB 4+4
284 250.21 268.67 94 31 9 4
RAID10 146GB RAID10 146GB 3+3+2S
432 380.61 408.67 144 48 14 7
RAID10 146GB RAID10 146GB 4+4
577 508.36 545.85 192 64 19 9
RAID10 300GB RAID10 300GB 3+3+2S
880 775.31 832.48 293 97 29 14
RAID10 300GB RAID10 300GB 4+4
1,174 1,034.34 1,110.61 391 130 39 19
RAID5 73GB RAID5 73GB 6+P+S
428 377.08 404.89 142 47 14 7
RAID5 73GB RAID5 73GB 7+P
500 440.52 473.00 166 55 16 8
RAID5 146GB RAID5 146GB 6+P+S
773 681.04 731.26 257 85 25 13
RAID5 146GB RAID5 146GB 7+P
1,011 890.73 956.41 337 112 33 17
RAID5 300GB RAID5 300GB 6+P+S
1,765 1,555.03 1,669.70 588 196 58 29
RAID5 300GB RAID5 300GB 7+P
2,059 1,814.05 1,947.83 686 228 68 34
- The IBM TotalStorage 1
- DS6000 Series: Concepts 1
- Contents ix 11
- LSS X'17' 100
- LSS X'18' 100
- DB2-test 100
- 4.2.7 Address groups 101
- 4.2.8 Volume access 101
- Host attachment 102
- Volume group 102
- 4.2.10 Placement of data 104
- Host LVM volume 105
- 5.1 DS6000 highlights 108
- 5.1.2 DS6000 Model 1750-EX1 109
- Loop 0) 111
- Loop 1) 111
- Controller 0 112
- Controller 1 112
- Copy Services 113
- 6.2 Copy Services functions 114
- Source Target 115
- 6.2.2 FlashCopy options 116
- Incremental FlashCopy 117
- Waiting write operation 119
- FlashCopy to 120
- PPRC Primary 120
- Persistent FlashCopy 121
- Global Copy (PPRC-XD) 122
- Server write 123
- Write to secondary 123
- (non-synchronously) 123
- Write acknowledge 123
- How Global Mirror works 124
- Global Mirror - How it works 125
- 127
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