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Netapp + ESXi = Questions

Posted on 2014-08-11
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Soon we will be setting up ESXi clusters on Netapp SANs.  What I'm having trouble wrapping my head around is exactly how to configure the Netapp side of things correctly.  I want all three ESXi hosts to access the same iSCSI lun, but where I'm falling short is how to configure that lun.

I setup a default LUN last year for two Hyper-V servers and while both servers could access and write to the LUN they could not see each others VM's.  Now that might be a Hyper-V limitation.. IDK exactly.  But having multiple hosts for failover won;t matter if I don;t setup the LUN correctly.

Can anyone lend a hand?
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Question by:Ben Hart
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Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 40253064
When you create the LUN, you add ALL the ESXi Host iSCSI Initiators, and make sure you select MAP.

All ESXi hosts will then be able to access that LUN.

Hyper-V can only do it with Clustering and Clustered Shared Volumes, it's much easier with VMware, and works!

NetApp also favours the use of NFS, when using VMware with NetApp, rather than iSCSI!

These articles I wrote may come in handy...

HOW TO: Enable Jumbo Frames on a VMware vSphere Hypervisor (ESXi 5.0) host server using the VMware vSphere Client

HOW TO: Add an iSCSI Software Adaptor and Create an iSCSI Multipath Network in VMware vSphere Hypervisor ESXi 5.0

Did you purchase a NetApp Bundle, becuase there is also software that integrates with vCenter which makes the configuration of datastores much easier also?
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Author Comment

by:Ben Hart
ID: 40253100
So.. I thought NFS was a choice between it and CIFS.. Are you recommending the creation of an NFS export with the hypervisors as root or read/write allowances?
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LVL 123
ID: 40253112
NetApp recommends the use of NFS, as performance could be better.

Depending upon your licenses, you can run iSCSI, CIFS and NFS at the same time.
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Author Comment

by:Ben Hart
ID: 40253123
Ahh gotcha.  Ok so what'd be a best practice move here?  I have two shelves for virtualization.. so 28x144gb.  Create an Aggregate with 28 drives, then create FlexVol, then an NFS export with the hypervisors as read/write allowances correct?
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LVL 123
ID: 40253140
Yes, that would be correct.
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Author Comment

by:Ben Hart
ID: 40253143
Awesome.. now would creating an AGG with all disks negatively affect the spares?
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LVL 123
ID: 40253166
You should really include a spare! (unless you have a disk on standby on the shelf!)
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Author Comment

by:Ben Hart
ID: 40253173
Ok cool deal.. I have 28 disks dedicate for VM storage so I created the agg with 24 disks, then a flexible volume and an NFS export.

Thanks Andrew, next time you are in rural Michigan let know and Ill buy you a beer!
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Author Closing Comment

by:Ben Hart
ID: 40253199
Andrew is the man.
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