Setting up Hyper-V Cluster with iSCSI SAN

san.jpgHi Guys,

Okay so I've just got hold of a EMC AX4-5i (iSCSI) SAN and 2x DL360 G6 Servers for a lab I am trying to setup, I have been trying to build a Hyper-V Cluster using SAN Storage.

I have presented the storage to both of the servers:

1x 1Gb for Quorum
1x 500Gb for CSV
1x 600Gb for CSV

Both servers can see the drives but for some strange reason if I try and bring the drives online on server 1 all i get is "device not ready", if i go to server 2 i can bring the drives online and add into failover cluster manager fine, i deleted the virtual disks on the SAN and re-created all the connections and I got the same results but this time i could bring the drives online on server 2 but not 1!........but then I am presented with another problem where if I want to change the owner of the storage I get a "failed" within failover cluster manager and an error "Element not found".

There are two controllers in this SAN, I have patched in one iSCSI port on each controller to each server (see attached, sorry for the very poor graphic!).

I'm used to managing a Hyper-V Cluster but this is my first time in building one from top to bottom, I must be doing something wrong here!

Note: Both servers are running 2012 R2 Datacenter
Ian TaylorIT Infrastructure Architect .:|:.:|:.Asked:
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Ian TaylorIT Infrastructure Architect .:|:.:|:.Author Commented:
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
What is the connectivity for iSCSI? Ethernet, Fiber Channel, or other?

In an iSCSI setup there needs to be two switches so that storage traffic has no single point of failure.

Generally the HBAs/NICs will have at least two ports with at least two HBAs/NICs per node connecting. This way port 0 gets switch 0 and port 1 gets switch 1 on all HBAs/NICs.

Once the above configuration is established MPIO would need to be installed (an OS thing or driver depending on storage HBAs), configured with accessible storage, and finally formatted and set to OFFLINE to allow cluster storage arbitration tests to be done during the Cluster Validation Wizard step.

 + Your nodes need to connect to your storage identically.
 + Your storage needs to allow both nodes to connect to the LUNs.
 + LUN Identifiers need to be the same for all nodes connecting

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Ian TaylorIT Infrastructure Architect .:|:.:|:.Author Commented:
Thanks, I'll try this.

Just to update you I moved the iscsi connections onto one controller and I managed to get the storage presented in and working via failover cluster manager.

I tried to present another LUN into the servers (500gig) disk management saw the drive but i got the "device not ready" even though my other LUNs (400Gig and 1Gig) are working
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