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iops calculator
raid calculator
array estimator
It helps to estimate required number of disks in the disk array. On the basis of the information about your requirements (goals), configuration and characteristics of workload it tells you how big your array should be.
goals
average random IOPS
usable capacity (GiB)
disk parameters
select a sample disk or put values manually
Seagate Savvio® 15K.2 147GB
Seagate Cheetah® 15K.7 450GB
Seagate Cheetah® NS.2 10K 600GB
Seagate Barracuda® ES.2 1TB
Seagate Barracuda® LP 2TB
capacity (GB)
rotation speed (RPM)
4200
5400
5900
7200
10000
15000
average seek latency (ms)
array parameters
RAID level
0
1 & 10
5 & 50
6 & 50
+
stripe size (KiB)
8
16
32
64
128
256
512
1024
2048
4096
workload parameters
reads (%)
writes (%)
read cache hit ratio (%)
write cache hit ratio (%)
average I/O size (KiB)
1
2
4
8
16
32
64
128
256
512
1024
array results
required number of disks
average random IOPS
usable capacity
native capacity
