SSD RAID Performance Calculator
This version of the calculator has been adapted to perform RAID performance calculation for solid state drives
(SSD), devices with substantial difference in read and write performance.
Examples of IOPS and throughput values for some SSD drives are provided in the table at the bottom of this page.
Supported RAID levels are RAID0, RAID1, RAID5, RAID6, RAID10 (1+0).
Total Performance = 46153.85 IO/s
Total usable capacity = 0.50 TB
RAID Type: RAID 1 (Mirror)
Reads 50%, Writes 50%
Number of RAID groups = 1
Number of drives per RAID group = 2
Total number of drives = 2
Single RAID group performance = 46153.85 IO/s
Single drive cost =
Cost per TB usable =
Total cost =
Number of drives per RAID1 group = 2
IO penalty (read) = 1/1 (one RAID IO per each host IO)
IO penalty (write) = 2/1 (2 RAID IOs per each host IO)
Fault tolerance = 1 disk drives per RAID group
IOPS (IO/s) and throughput (MB/s)
are two common performance measurements for storage devices, such as disk drives and RAID sets. Most often IOPS measurement
is used for random small block (4-8 KB) read and/or write operations typical for OLTP applications. MB/s is used for large block
(>= 64 KB) random or sequential operations, such as file transfer and streaming.
This calculator does not perform conversion between IO/s and MB/s, and vice versa.
If you've switched the units, do not forget to enter applicable values in the Single drive performance fields.
IOPS and throughput values for some SSD drives:
Model / Type
|Max Read IOPS
(4KB block, random)
|Max Write IOPS
(4KB block, random)
|Max Read Throughput
|Max Write Throughput
|Lightning Read-Intensive LB 1606R (MLC)
|Lightning Write-Intensive LB 406S (SLC)
LB 806M (SLC)
|Ultrastar SSD800MH.B (MLC)
||800; 400; 200; 100||130000||110000||1100||765
|Ultrastar SSD1600MM (MLC)
||1600; 800; 400; 200||130000||100000||1100||765
|Ultrastar SSD1600MR (MLC)
||1600; 1000; 800; 500; 400; 250||130000||30000||1100||700
|Ultrastar SSD400S.B (SLC)
||400; 200; 100||57500||25500||536||502
|Ultrastar SSD1000MR (MLC)
||1000; 500; 250||145000||20000||1200||700