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Comparing Speed Difference using 10K or 15K SAS Drives in IBM Servers

Posted on 2014-07-16
Medium Priority
Last Modified: 2014-11-16
Hi Guys,

Can someone shoot me there opinion on 10K to 15K SAS Drives in a IBM Servers

I am looking at putting some Upgraded drives into a x3550 and a x3650 M2

We can get some 900GB 10k Drives at a good price but as the x3550 and x3650 are being used to Run a Terminal Server 2008 (x3550) and 2012 (x3650) on to top of VMware ESXi i am just wondering if i will see any difference between 10K and 15K majorly.

The TS will have anywhere between 10-15 People on at max at once, so not a huge environment.

The 15K drives are smaller that i can get and more expensive so just wondering if i will see a major and noticeable difference.

I will be running them in Raid 1 on both servers

Thanks Adam
Question by:cdsaus
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LVL 124

Accepted Solution

Andrew Hancock (VMware vExpert / EE MVE^2) earned 668 total points
ID: 40201306
You will certainly get more IOPS from 15k disks, compared to 10k disks, if you can afford 15k, go for 15k disks.

As the I/O is virtualised, you need a datastore which is as fast as possible, and 15k SAS drives will give you that.

Author Comment

ID: 40201329
is there a % difference between 10K and 15K

Problem is the Customer is a little tight on cash and the 900GB drives 10k are normally my cost some 600 where i am getting them fro 300, i can get some 15k for that money but they will most likely be 300gb
LVL 124

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 668 total points
ID: 40201449
if you only have two drives, and are on a budget, stick to 10k, more drives in the RAID array the better, e.g. RAID 10
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Author Comment

ID: 40230815
hi Andrew,

Sorry for ,late reply

I Guess the thing is I can get smaller size drives 15k for about the same price as these 10K 900gb ones the customer doesn't at the moment need 900gb but i am just looming forward

Thansk for all your advise i will work with the info i have been given above and make a dissension

Thanks Adam

Assisted Solution

by:Max Sando
Max Sando earned 332 total points
ID: 40234716
Is it just two drives? I would try to lean for the 15k if its just two drives. If your spindle count is higher then the 10k drives should be fine with that workload.

Author Comment

ID: 40236119
Hi Yes only two drives

I will try and source some 15K 300GB then

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