Steps to find NAA ID of a RDM LUN mapped to a Windows Volume

Scenario:

Customer requested to increase the windows volume T:. The mentioned volume is a RAW LUN located in EMC VMAX storage. To expand the LUN storage team needs NAA ID (or WWN) of the LUN.

Its easy to find the naa id of a LUN from windows Guest OS with the help of EMC’s Inquiry (inq) tool. Please find the steps below to fetch the naa id with inq tool.

 

Steps:

  1. Download the inq tool to the VM from following hyperlink.
    1. inq
  2. Open a CMD window.
    1. Go to RUN -> cmd
  3. CD to the directory where inq is downloaded.
  4. Find the device associated to the windows volume T:.
    1. Run the command inq -winvolwinvol
    2. Here the Device name is PHYSICALDRIVE4.
  5. Find the NAA id of the LUN associated to the Device PHYSICALDRIVE4.
    1. Run the command inq -wwn naa number
    2. You can see that naa id is displayed in WWN column!!!.

To Confirm you can use the following method.

  1. Find virtual device node of the Device.
    1. Run the command inq -btlVirtual
    2. note down the Bus (0) and Tid number (4).
  2. Open VM settings check the NAAID of the disk with Virtual Device Node “0:4”.vm settings - Virtual Devicevm settings - NAA ID

Disclaimer :

I have’nt tested it on all windows platforms and tested only with EMC storages. So use at your own risk.

  • Mohommad Gayasuddin

    Thanks a lot . its works.

    • Sreejesh

      Thanks Mohammad, happy to hear it helped you.