I have never heard this term before today, looking it up now.

From: [email protected] [mailto:[email protected]] On 
Behalf Of Jim Majorowicz
Sent: Wednesday, July 03, 2013 3:52 PM
To: [email protected]
Subject: Re: [NTSysADM] VDI Server Hardware Critique

Be careful of a SATA Raid array.  I've got a couple of these and in an effort 
to save money and I'm not doing it again.  The issue comes down to something I 
learned about the hard way.  "Array Puncture"...


On Wed, Jul 3, 2013 at 3:30 PM, Stephen Wimberly 
<[email protected]<mailto:[email protected]>> wrote:
Kurt, Our Dell rep tells me that I could set this up on SATA drives on RAID 5, 
which scares me.  If SATA on RAID 5 would be 'acceptible' then I think SSD 
would be just overkill, but if anyone has tried this I would love to hear your 
experience.

Christopher, Good Question.  We have over 500 desktops in total, so we 
certainly aren't trying for 100% VDI.  The thought is that we would use the 
first box to learn on and see what our CPU and IOPS looks like.  I am hoping to 
use the first box "officially" for 50 workstations, but 75 to 100 if a box ever 
dies.  When we add more boxes in the future we will have the fault tolerance 
built in with a "farm" of VDI host boxes.

An external array would be more than the budget allows, so we are attempting to 
go with internal drives.  Since the workstations in mind will boot at different 
times there should not be much of a login storm.

On Tue, Jul 2, 2013 at 10:01 AM, Christopher Bodnar 
<[email protected]<mailto:[email protected]>> wrote:
What do you expect the concurrency to be on average?

My biggest problem with something like this is that you have no fault 
tolerance. So if this one box goes down, all these part time helpers are down.
Christopher Bodnar
Enterprise Architect I, Corporate Office of Technology:Enterprise Architecture 
and Engineering Services

Tel 610-807-6459<tel:610-807-6459>
3900 Burgess Place, Bethlehem, PA 18017
[email protected]<mailto:[email protected]>



The Guardian Life Insurance Company of America

www.guardianlife.com<http://www.guardianlife.com/>







From:        "Stephen Wimberly" 
<[email protected]<mailto:[email protected]>>
To:        <[email protected]<mailto:[email protected]>>
Date:        07/01/2013 06:37 PM
Subject:        [NTSysADM] VDI Server Hardware Critique
Sent by:        
[email protected]<mailto:[email protected]>
________________________________


Please critique the following "budget" VDI Server purchase. I know there is no 
"correct" hardware, but also want to hear what others think.

USE:  Approximately 50 workstations via Microsoft RDS that will run Microsoft 
Office (Most will not use Outlook, but rather webmail).  All will have Adobe 
Reader, but not licensed Adobe products.  These will be shared computers, 
generally not used by full time staff personnel but part time helpers so the 
login/logoff storm will be more random.

SERVER:
Dell PowerEdge R720
CPU: Dual Xeon E5-2680 (8 Core)
Memory: 192 GB (12x16GB @ 1600 RDIMS
RAID 10 (H710 PERC)
HDD: 16 300GB 10K 2.5"
NIC: BCOM 5720 Daughter Card
OS: Microsoft Windows Server 2012
Microsoft Hyper V
Remote Desktop Services

(We may wait for Server 2012 R2 for the deduplication on the HyperV guests.)

This will be our first step into VDI, so any advance thoughts would be 
appreciated.

Thank you in Advance!

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