RAID 0+1 Calculations
To calculate the number of drives necessary to meet the storage requirements with RAID 0+1, divide the Total Storage Requirements by the Drive Size Actual. Round the result up and multiply by 2. For this example, 10 drives are needed for RAID 0+1 to meet the storage requirements:
10 = ROUNDUP(540÷132)*2
To calculate the number of drives required to meet the performance requirements with RAID 0+1, multiply the Number of Write IOPS by 2 and add the Number of Read IOPS. Divide this total by the Calculated Drive IOPS and round the result up. For this example, 4 drives are needed for RAID 0+1 to meet the performance requirements:
4 = ROUNDUP(((140*2)+140)÷125)
Although RAID 0+1 can meet the performance requirements with just ...
Get Windows Server 2008 Terminal Services now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
