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Equalogic P6500 / ESXi / Windows 2008

Posted on 2014-02-26
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We have a two brand new Equalogic devices ready to go with around 70TB of useable storage.    We will be using three VMWare Esxi clustered hosts two support around 13 VM's mostly running 2008 or 2012 server.

We have one server, a file server which has a currently large storage volume of around 30TB, twice the size of the LUN limitation imposed by the P series.  Our challenge is that we want to have the same folder architecture as what we have now and that will require us keep the large size of 20-30TB total.

We are considering using a single datastore with 2 15TB segments across to the two LUN's to accommodate what we need in having a single large shared volume.  We do not want to use host side spanning as I don't trust using soft arrays.

Would this be an appropriate approach?  Any suggestions to accommodate what we are looking to do?
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Question by:ehilder1
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kevinhsieh earned 2000 total points
ID: 39891022
You keep 30 TB under a single share? Wow. I am sure that Dell would love to sell you some FS7600 units. :-)

If you are not under a single share, I would break it up into multiple volumes. If everything is under a single share, you can use DFS namespace and/or mount points to combine multiple shares or volumes into a single logical shared namespace/volume. I would not span a volume across multiple LUNs. I hate dynamic disks, and if anything happens to any of the LUNS you can lose everything. With either mount points or DFS, each LUN only puts some of your data at risk.

http://windowsitpro.com/systems-management/magic-mount-points

How do you back up 30 TB?

Are you planning on using RDM, VMDK, or using the iSCSI initiator inside the VM? It looks like you can't expand a VMDK to be larger than 2 TB when the VM is powered on. I don't know about RDM, which may leave the native iSCSI initiator inside your guest as the only option. I have been using the iSCSI initiator inside the guest with EqualLogic storage for 7 years (under Virtual Server/Hyper-V) and it is fine.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2058287
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