I've 2 node of storevirtual P4330 with 8 disk of 900GB. Each storage by default comes with raid 5 and 1 logical array. I configured a network raid 10 for the storage.
according to the formula on this site: http://h20564.www2.hp.com/hpsc/doc/public/display?docId=mmr_kc-0108305
My raw space would be 2X8X900 = 14400
And hardware raid should be R5_CS = NN *(N –(1*NL))*Ds
NN = number of nodes
N= number of disk
NL = Number of logical array
DS = Disk space
My hardware raid space would be 12600GB
For the network raid space I should be 6300GB (basically is just divide by 2)
But in reality, My hardware raid space is 11388GB and the network raid divide by 2 is 5694GB
Anyone can enlighten me how storevirtual really calculates it space?