Using NetApp for VMware Storage. One Volume/LUn or many

I am wondering what the best practice is for carving out storage Volumes and LUNS for VMware using HA, and Vmotion.   All Guest OS's and storage will be on the NetApp.

This will be a small three host cluster, with about 7 guest OS's on each host.   I am not sure whether to carve out one big Volume with three LUN's, three Volumes and three Luns or Three Volumes and a Lun for each guest server.

I will be running and Exchange 2010 server on the VM.  
I have attached a spreadsheet with my current thinking on how it should be configured.
Thanks,
Kat NetApp-for VM
NicoPodAsked:
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Paul SolovyovskySenior IT AdvisorCommented:
That's what I would do.  Make the volumes 30% larger than the LUN and thin provision the LUN
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Paul SolovyovskySenior IT AdvisorCommented:
Keep in mind that dedupe is per volume.  If you can keep like VMs (OS wise) on the same volume than you'll get the greatest dedupe benefit.  If you're doing snapmirror I would create another volume just for vmware virtual swap files so that you don't have to snapmirror them

How large are the VMs and how much IOPS do the need?
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NicoPodAuthor Commented:
Probably about 1500 IOPS.  One Mailbox server with 500 mailboxes, 2 data stores.   The largest VM will be our File and Print Server, with a storage requirement of about 1TB. Second the Exchange server need about 700 GB's for storage.
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Paul SolovyovskySenior IT AdvisorCommented:
I would create one volume for Exchange, 1 for File and one for utility servers (everything else).  

Are  you going to use Snapmanager for Exchange? If so you can put Exchange with VM with everyone else since the Netapp LUNs will be holding, Exchange DB, logs, etc..
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NicoPodAuthor Commented:
Thanks,  I am not going to be using Snapmanager for Exchange.
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Paul SolovyovskySenior IT AdvisorCommented:
If not then you can either put it on of the VM volumes (NFS or LUN) if it's not too large.  If it's over 300-400GB then I would carve a volume just for it.
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NicoPodAuthor Commented:
Just to make sure I understand.  
I have already created a 5.6 TB Aggregate with DP.  
I have already created one big volume  and was planning on creating 3 LUNS - using the WMware protocol.
You are recommending  that within that aggregate I should create 3 Volumes and within those volumes create the 3 VMware LUNs.  One for Exchange, one for File and Print and one for everything else.  

Thanks,
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Paul SolovyovskySenior IT AdvisorCommented:
I would create a single LUN per volume.  This gives you the greatest flexibility.  Also configure thin provisioning on the LUNs for more options as you proceed.

If you have NFS you can also do VMs with it as well
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NicoPodAuthor Commented:
got it! 3 volumes 1 LUN per volume.  

Thanks
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