A customer is planning on migrating their Exchange data to a VNX array. You have gathered the
following information:
6000 IOPS; 50% read/write ratio
Calculating for RAID 5, what is the minimum number of 15K SAS drives required?
A.
84
B.
100
C.
34
D.
96
correct answer should be 34 because 6000/180 + 1 hs
0
0
You forgot the R5 write penalty (which is 4). It´s
(0.5 * 6000) + (4 * 0.5 * 60000) = 15000
15000 / 180 = 83.33 (which means 84 drives).
0
0