Raid 5 capacity question
Posted on 2007-11-20
I would like to destroy an empty LUN and use it's drives, to create two new luns. The problem is my calculations for capacity do not match what Navisphere is telling me for the current LUN, so I am not willing to destroy this LUN until I know my calculations are correct and the drives will each be large enough after spliting.
Current LUN has 9 drives with these details.
Raw Capacity = 268.40
User Capacity = 238.55
It's currently a raid 5 LUN.... SO
The described math I am using says multiply the smallest drive * number of drives - 1
238.55 * 9 - 1 = 1908
Navisphere shows all 9 drives to have a user Capacity of 1122.97