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  • 1.  Changing iSCSI Target IP

    Posted Jul 30, 2009 07:05 PM

    We have 20 Virtual Machines on 2 servers in an ESX 3.5 cluster. Our current SAN/iScsi implementation is on the same subnet as our physical servers and guests. We would like to create a separate VLAN for just the iSCSI traffic. I am starting to test this on an ESXi 4.0 iSCSI to FreeNAS. Background ( 6 NICS on each ESX server) 2 are currently assigned to VMotion, Console and iSCSI target, 4 are assigned to Guests. To my knowledge this is all that needs to take place:

    -Obviously shut down all the guests

    -Create the VLAN

    -Plug the SAN into the new VLAN ports and 1 GB NIC from each ESX server into the new VLAN

    -Create a new Virtual Switch in ESX 3.5 assign both iSCSI NICS from each ESX server to the new Virtual Switch

    -Change the IP on the SAN and 2 ESX iSCSI NICs to the same new VLAN subnet

    -Chage the iSCSI target in ESX to the new IP on the new VLAN to the SAN

    -Rescan storage adapters

    -Once it finds the update iSCSI target Start all the Guests back up

    So to sum it up we will now have 3 Virtual Switches. 1 Nic for VMotion/Console, 1 Nic for iSCSI target, and the 4 remaining for the guests. (should we assign 2 nics to new Virtual switch for iSCSI for failover purposes and have 3 NICS for guests?)

    Is there anyway to see all 12 NICS and how they are assigned? I am only looking at each server and which switch they are assigned to... anyway to see the big picture?

    Is this a good outline and is it as simple as that?

    Any insight would be greatly appreciated.

    Thanks,



  • 2.  RE: Changing iSCSI Target IP

    Posted Jul 30, 2009 07:24 PM

    I think your project is fine !

    I didn't see anything can cause problems.

    Riccardo Riva

    VCP,RHCE,FCNSA

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  • 3.  RE: Changing iSCSI Target IP

    Posted Jul 31, 2009 08:31 AM

    Configuration is good, but I would to recommend you to use Starwind, for testing free version will be fine. Based on my own work can say that it`s pretty cool software.

    Tim.



  • 4.  RE: Changing iSCSI Target IP

    Posted Jul 31, 2009 02:10 PM

    FreeNAS works good for creating a iSCSI target.. but thanks for the recomendation.



  • 5.  RE: Changing iSCSI Target IP

    Posted Jul 31, 2009 02:24 PM

    Not a problem. I`ve choosed Starwind after testing both products.