Acer HDS WMS100 Reference Manual
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Acer | HDS WMS100™ User and Reference Guide 303
When dividing RAID groups into multiple logical units, set the sum total of the number of
logical blocks of each logical unit below the number of logical blocks per parity shown below.
However, when creating multiple parity groups in each RAID group, set them below the
number of logical blocks of one parity group multiplied by the number of parity groups.
The number of logical blocks of one parity group is shown below.
Table I.2 Number of Logical Blocks of One Parity Group
245.7 G bytes 393.4 G bytes Disk drive capacity
RAID configuration
Number of logical blocks 1
Number of logical blocks 1
RAID1 (1D+1D) 479,971,328 768,475,136
RAID5 (2D+1P) 959,942,656 1,536,950,272
(3D+1P) 1,439,913,984 2,305,425,408
(4D+1P) 1,919,885,312 3,073,900,544
(5D+1P) 2,399,856,640 3,842,375,680
(6D+1P) 2,879,827,968 4,610,850,816
(7D+1P) 3,359,799,296 5,379,325,952
(8D+1P) 3,839,770,624 6,147,801,088
(9D+1P) 4,319,741,952 6,916,276,224
(10D+1P) 4,799,713,280 7,684,751,360
(11D+1P) 5,279,684,608 8,453,226,496
(12D+1P) 5,759,655,936 9,221,701,632
(13D+1P) 6,239,627,264 9,990,176,768
(14D+1P) 6,719,598,592 10,758,651,904
(15D+1P) 7,199,569,920 11,527,127,040
RAID 6 (2D+2P) 959,942,656 1,536,950,272
(3D+2P) 1,439,913,984 2,305,425,408
(4D+2P) 1,919,885,312 3,073,900,544
(5D+2P) 2,399,856,640 3,842,375,680
(6D+2P) 2,879,827,968 4,610,850,816
(7D+2P) 3,359,799,296 5,379,325,952
(8D+2P) 3,839,770,624 6,147,801,088
(9D+2P) 4,319,741,952 6,916,276,224
(10D+2P) 4,799,713,280 7,684,751,360
(11D+2P) 5,279,684,608 8,453,226,496
(12D+2P) 5,759,655,936 9,221,701,632
(13D+2P) 6,239,627,264 9,990,176,768
(14D+2P) 6,719,598,592 10,758,651,904
(15D+2P) 7,199,569,920 11,527,127,040
(16D+2P) 7,679,541,248 12,295,602,176
(17D+2P) 8,159,512,576 13,064,077,312
(18D+2P) 8,639,483,904 13,832,552,448
(19D+2P) 9,119,455,232 14,601,027,584
(20D+2P) 9,599,426,560 15,369,502,720
(21D+2P) 10,079,397,888 16,137,977,856
(22D+2P) 10,559,369,216 16,906,452,992
(23D+2P) 11,039,340,544 17,674,928,128
(24D+2P) 11,519,311,872 18,443,403,264
(25D+2P) 11,999,283,200 19,211,878,400
(26D+2P) 12,479,254,528 19,980,353,536
(27D+2P) 12,959,225,856 20,748,828,672
(28D+2P) 13,439,197,184 21,517,303,808
RAID1+0 (2D+2D) 959,942,656 1,536,950,272
(3D+3D) 1,439,913,984 2,305,425,408
(4D+4D) 1,919,885,312 3,073,900,544
(5D+5D) 2,399,856,640 3,842,375,680
(6D+6D) 2,879,827,968 4,610,850,816
(7D+7D) 3,359,799,296 5,379,325,952
(8D+8D) 3,839,770,624 6,147,801,088