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15K vs 10K SAS

I'm building a new ESXi (IBM x3650M3) server with 584GB RAID 10 array. I'm thinking of using 8x 146GB 15K SAS or 4x 300GB 10K SAS. I'm planning to run 4 virtual  servers on the ESXi host. (Terminal, file and SQL servers) Will I notice any different if I choose 10K disks?
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elit2007
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elit2007
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4 Solutions
 
pjamCommented:
I am sure 10k would be cheaper.
toms hardware has an article comparing the two at:
http://www.tomshardware.com/reviews/sas-hard-drives,1702.html
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
What RAID set are you thinking of, and what are your virtual machines, heavy I/O e.g. SQL, Exchange?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Sorry, just read the question again. I would go for 15k.
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coolsport00Commented:
If you were to add the 'Storage' Zone for EE, you'd get more in-depth 'technical' arguments, I think. But honestly, IMO, you won't notice a difference.

~coolsport00
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Your underlying storage system is important, and cannot be changed later. What is also important of your selection of RAID types, either RAID 10 or RAID 5, RAID 10 will give you more performance, at the trade off of space. BUT, it depends on how intensive your SQL and Terminal Server servers will be.
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elit2007Author Commented:
They will not be heavy loaded. It will be small SQL Express instances, fileservers and terminal servers with few simultaneously users. Maybe a old 2003 Exchange server used by 10 users.
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coolsport00Commented:
You won't notice a difference...really, especially with that small a shop.

~coolsport00
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andyalderCommented:
It's not so much 10K Vs 15K but 4 disks Vs 8 disks, the more spindles you have the faster it can go, but I'd agree that only 10 users 4*10K would be OK.
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coolsport00Commented:
Ah...there you are "andy"! :P
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elit2007Author Commented:
10 users is only on the Exchange server. Say 20-30 users total on the 4 servers.
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coolsport00Commented:
Still good to go...it's a real small environment, and you're running SQLExpress. No worries with 10K.

~coolsport00
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elit2007Author Commented:
Thank's for input :) Then my choice is 10K
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