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Calculate the storage efficiency of RAID level 1, 3, 5 and 6. The number of disk drives available are 6 each having capacity of 200 GB. Also find the usable capacity of each RAID level.

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Calculate the storage efficiency of RAID level 1, 3, 5 and 6. The number of disk drives available are 6 each having capacity of 200 GB. Also find the usable capacity of each RAID level.

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written 6.6 years ago by | • modified 6.6 years ago |

Raid usable capacity is calculated simply by dividing the total usable capacity of the drive by the sum of the capacities of all the drives that underline the array

**Given:**

RAID 1 = 100*(disks/2)/disks=100*(6/2)/6=83.33%

RAID 2= 100*(disks-(disks+1)/log(2)/disks

RAID 3= 100*(disks-1)/disks=100*(5)/6=83.3%

RAID 4=100*(disks-1)/disks

RAID 5= 100*(disks-1)/disks=100*(5)/6=83.3%

RAID 6=100*(disks-2)/disks=100*(4)/6=66.66%

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