Data ONTAP Discussions

Highlighted

Disk IOPS

Hi Guys,

 

from netapp perspective, is there any link where i can see the maximum supported IOPs of the disks based on the type of disks and RPM.

 

regards
Vinay

1 REPLY 1
Highlighted

Re: Disk IOPS

Hi Vinay,

 

commonly used numbers can be found here:

https://en.wikipedia.org/wiki/IOPS#Mechanical_hard_drives

Those numbers are for 3.5" drives.

Due to smaller platter diameter a 2.5" 10K RPM SAS drive may deliver up to 170 IOPS.

 

 

NetApp currently sells 3.5" 7.2K RPM SATA / NL-SAS drives and 2.5" 10K RPM SAS drives.

In the past we also used to sell 3.5" 15K RPM drives and some may still be around.

 

A note of caution - it's dangerous to size  a system based only on drive IOPS capabilites. Many other factors come into play like RAID overhead or controller cache. Also the workload plays a significant role. That's why storage vendors like us have sizing tools to determine system capabilites. Relying solely on IOPS might not yield what you are looking for.

 

 

regards, Niels

Try the NEW Knowledgebase!
NetApp KB Site
Forums