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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).

RAID Type:
Drive capacity (GB):
Single drive performance:
Read performance:
Write performance:
Single drive cost:
Number of drives per RAID group: 
Number of RAID groups:
Read operations (%):

Total Performance = 92307.69 IO/s
Total usable capacity = 1.00 TB

RAID Type: RAID 10 (Striped mirrors)
Reads 50%, Writes 50%
Number of RAID groups = 1
Number of drives per RAID group = 4
Total number of drives = 4
Single RAID group performance = 92307.69 IO/s
Single drive cost =
Cost per TB usable =
Total cost =
Notes:
Minimum number of drives per RAID10 group = 4.
Must have even number of disks.
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 (min) to 2 (max) 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

Capacity (GB)
Max Read IOPS
(4KB block, random)
Max Write IOPS
(4KB block, random)
Max Read Throughput
MB/s
(sequential)
Max Write Throughput
MB/s
(sequential)
Lightning Read-Intensive LB 1606R (MLC) 1600 78000 8000 410 140
Lightning Write-Intensive LB 406S (SLC) 400 118000 33000 450 250
Lightning Mixed-Use
LB 806M (SLC)
800 100000 16000 450 220
P410m (MLC) 400; 200 50000 30000 400 340
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