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Using 2x ESXi 3.5u4 to use Dell MD3000i SAN via iSCSI Ethernet unmanaged switch

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  • Using 2x ESXi 3.5u4 to use Dell MD3000i SAN via iSCSI Ethernet unmanaged switch

    Hi All,

    I'm about to deploy VMWare ESXi 3.5 on 2 servers which will be sharing the SAN using iSCSI (2x Gigabit Ethernet teaming cable).

    1xSAN Specs:
    Dell PowerVault MD3000
    10x 300 GB SAS 15k rpm
    2x Dual port Gigabit Ethernet NIC (4x in total)

    2x Server Dell PowerEDGE 2950-III
    2x Intel Quad Core E5410 (8core in total)
    32 GB DDR-II 667 MHz
    internal 4x 500 GB SATA 7200 rpm HDD (RAID 5) - I know it is slow for hosting the VMDKs
    Internal USB slot on the motherboard (but no USB flashdisk ???)

    in this case I'd like to simplify the diagram so that i can use 2xdirect patch cable connection to the SAN from each server and just leave the production line access shared cable to the unmanaged switch while those two pairs of the SAN-Servers running on it's own subnet
    Please find the attached diagram.


    and the last thing is, as I've got spare 1 TB from the internal RAID10 SATA Drive, any idea of what should i do with them apart from installing 32 MB ESXi ?

    please let me know if this is does make sense and according to the best practice ?

    thanks.
    ________
    silver surfer reviews
    Attached Files
    Last edited by Albertwt; 21st January 2011, 11:16.

  • #2
    Re: Using 2x ESXi 3.5u4 to use Dell MD3000i SAN via iSCSI Ethernet unmanaged switch

    Hello,

    While no expert by any means, I've just deployed a very similar setup:

    3 Dell PE2950's with ESX 3.5 and 2 ETH ports dedicated to the iSCSI LAN.

    1 Dell MD3000i with dual controllers (2 ETH ports and 1 management port per controller)

    I used two switches between the servers and the array, though I suppose with only two servers, you may be able to forgo those switches.

    I also found that VMware recommends using a single SAN subnet for the array connection instead of two separate ones.

    One suggestion I offer is connecting one port from each server to one port on each iSCSI controller instead of both ports to a single controller. Otherwise if one controller fails, one of the servers will lose all connectivity to the array.

    Regards,

    -Travis

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    • #3
      Re: Using 2x ESXi 3.5u4 to use Dell MD3000i SAN via iSCSI Ethernet unmanaged switch

      OK,

      Thanks for the reply Travis, after reading through the net about using iSCSI SAN with ESXi, it seems that i also need to use vSwitch so that the separate SAN subnet can communicate with my client in LAN subnet.

      so this is the diagram below, please correct me if I'm wrong.

      Cheers,
      Albert
      ________
      universal health
      Attached Files
      Last edited by Albertwt; 21st January 2011, 11:16.

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