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Jeff_Sullivan 		Latest page update: made by Jeff_Sullivan , May 19 2010, 3:10 PM EDT (about this update About This Update Jeff_Sullivan Edited by Jeff_Sullivan

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Keyword tags: cx4 das deduplication dl2000 emc equallogic iscsi md3000 md3000i nas nx300 nx3000 powervault san storage
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gaujt Poor performance - MD3000i as a file server (page: 1 2) 21 Jun 28 2010, 12:46 PM EDT by JOHNADCO
Thread started: May 3 2010, 11:55 AM EDT  Watch
Greetings folks

I have an MD3000i acting as storage for a PE2950; below is my observation:
PE2950 file copy local drive to MD - ok throughput, up to 70% of GbE, about roughly the same when file copy is from MD to local drive
Client on the public LAN file copy from share on PE2950 (local drive), ok throughput also

However, when the client maps to the file share, and the share happens to be from the MD - I obviously see roughly equal utilisation on both the public LAN and iSCSI LAN NICS (both using the server onboard NICs); but performance is very bad like 7% of GbE.

First thing that came to mind was that the PE2950 couldn't drive both NICS at the same time, seeing that testing from client > server local disk or server local disk > MD worked ok; but the PE2950 is not ancient hardware either (4GB RAM, 2.x GHz), so it can't be that bad?

Thought it might be due to interrupt sharing, but it's been ages since I had to tweak that on a server, but anyway I've tried tweaking those but it does not seem to help.

Does anyone have any leads on where to go to? Firmware is latest on the MD3000i. (15 x 600GB 15K SAS), also updated the SAS disk firmware.

Thanks!
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Keyword tags: iscsi md3000i san storage
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MrStayPuft Storage Growth - CAGR 0 Apr 27 2010, 2:24 AM EDT by MrStayPuft
Thread started: Apr 27 2010, 2:24 AM EDT  Watch
I have been looking around for a guide for forecasting growth of storage for budgeting purposes. We currently have 160Gb (60Gb Tier 1, 100Gb Tier2). So I am trying to estimate how much is likely to be required in 1,2,3,4,5 years time.

CAGR (Compounded Annual Growth) is apparently the figure to use but whitepapers I have read give a CAGR of anywhere between 15-60% and no explanation of how this number is arrived at is ever given.

Is there a rough industry standard/guideline that anyone is aware of? Doesn't have to be exact, just from a respected source so it can be used in the forecast and quoted.

cheers
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Keyword tags: None
arun_john MD3000I or PS4000 5 Mar 25 2010, 5:15 PM EDT by Aaron@Dell
Thread started: Aug 7 2009, 12:37 AM EDT  Watch
when should one position ps4000 over the md3000 will there be performace difference when we are taking of a small 2 node esx cluster
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Keyword tags: equallogic powervault storage
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