CALCULATE IOPS FROM MB/S

Hi Team, 

 

I'm going to setup three storage Ceph server with cluster. 

Each server has 9300-8i controller with 8*2tb sata ssd disks. 

 

Overall throughout of 8 drives and per drive throughout is mentioned below. 

 

So 4480 MB/s   /   8 SSD   = 560 MB/s per drive. 

 

There is no hardware raid concept here and all will be taken care by Ceph. 

 

From just one server calculation. 

 

IOPS = (MBps Throughput/KB per IO) * 1024

 

Iops = 560/4 *1024  = 143,360

 

560 -- Per drive throughput

4 kb ----- block size 

 

So 1,003,520   iops from all the 8 drives? 

Is this correct calc? 

 

Thank you, 

Raj