Vmax Performance issue.....BE high utilization

[Quincy561]

Just because it is the same load to all drives doesn't mean it isn't too much.

Figure each disk can do 50 IOPs with good response time.  Each host write = 6 disk IOs.  So you can figure out how many SATA disks you need pretty easily for your specific workload.

[SreeHari_Karana]

Hi,

Do you use virtual provisioning in your environment? And how are the metas configured? Striped or concatenated? What is the predominant RAID type?

Based on your answers for the above, I can may be suggest a few things, but my suggestions would really be more of the best practices, I'd recommend you engage a perf specialist from EMC.

Thanks,

Sreehari

[apethe]

Hi sreehari,

The entire storage is virtual provisioned

We have 8 way to 32 way metas, striped

Raid type is R6

Ameya

[Quincy561]

Apethe,

Are all drive types RAID 6?  If so, that would explain the high backend utilization.

[apethe]

Yes, all the drive types in the screenshot are raid 6. Even with FAST working optimally, the server teams are complaining of high response times.

[Quincy561]

There is nothing wrong with using RAID6 that adding more drives and/or DAs won't fix.

However your performance issue could be something else.  Again, this should be dealt with via the SR process along with the local performance folks.