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January 23rd, 2015 00:00
Hyper-V shared storage support for MD3420 SAS configuration
Hello,
We are going to buy PowerVault MD3420, 12G SAS, 6x 1.2TB 10K SAS 6Gbps, 2x Ctrl 4GB, 2x PSU to configure it as shared storage (to store CSV volumes) for our two Hyper-V hosts (Windows Server 2012 R2) using only SAS cables. As HBAs for hosts we are going to use this one: 405-11482 Dell 6Gbps SAS HBA Card Kit
We just wanted to double check - is such configuration officially supported by Dell? Are there official drivers for this HBA for Windows Server 2012 R2 (and not R2)?
Thanks in advance,
Nikolay
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DELL-Sam L
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January 28th, 2015 06:00
Hello Nikolay,
So with the setup that you are trying to do all will work but you will need to get the correct HBA for the MD3420 as you will need a 12gb SAS card & not a 6gb SAS card. Here is a link to the support matrix for the MD3420 & if you look on page 21 it list out the support SAS HBA’s & has there pert# as well so you can get the correct one for your server. ftp://ftp.dell.com/Manuals/Common/powervault-md3400_concept%20guide_en-us.pdf
Also what you will need to is to make sure that when you go to deploy this setup that you have 2 connections from each server to the MD3420 just so that your failover for shared storage will work correctly. Here is a link to the Deployment Guide as well and if you look on page 14 it shows you how to cable the system using 4 connections to each controller. You will only need to use minimum of 2 connections to each controller on your MD3420. http://topics-cdn.dell.com/pdf/powervault-md3400_Deployment%20Guide2_en-us.pdf
Please let us know if you have any other questions.
nickolay
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January 28th, 2015 07:00
Hi Sam!
Thank you very much for your reply!
What is still unclear to me is what MPIO driver should I use in this case. As far as I understand, I will have several (2 for each host) alternative SAS paths so I will need to use some MPIO mechanism to correctly handle path selection. Am I correct? If yes please point me (if possible) to correct guide with the description of this moment.
Also, I reviewed all the available pdfs for MD3420 from the ftp link you provided and I was unable to find file with the description of correct Hyper-V CSV cluster configuration with MD3420 array connected via SAS. I understand that this process will not really differ from the Hyper-V cluster configuration with any other storage array but just to make sure: do you have such guide? I found the following blog post describing Hyper-V shared storage cluster configuration for MD3220i array using iSCSI: faultbucket.ca/.../hyper-v-failover-cluster-setup and I think this post pretty much the same for SAS case with several distinctions...
Thanks in advance,
Nikolay