Netapp + ESXi = Questions

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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Ben HartAsked:
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
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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Ben HartAuthor Commented:
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?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
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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Ben HartAuthor Commented:
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?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
Yes, that would be correct.
Ben HartAuthor Commented:
Awesome.. now would creating an AGG with all disks negatively affect the spares?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
You should really include a spare! (unless you have a disk on standby on the shelf!)
Ben HartAuthor Commented:
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!
Ben HartAuthor Commented:
Andrew is the man.
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