Storage concepts VMWare

Posted on 2014-08-29
Last Modified: 2014-08-29
Hello Experts,

I have below questions related to storage adapter.

1). What is Devices and Paths in storage adapter details? I see compelnt Fibre channel disk (I think it got generated automatically) , what is  this?

2). When I try to add the Lun to make VMware it shows the location  /vmfs/devices/disks/naa.6000.........

what is this path , and where it will be?

Please help me in understanding the above questions.


-Prashant Girennavar.
Question by:Prashant Girennavar
    LVL 116

    Expert Comment

    by:Andrew Hancock (VMware vExpert / EE MVE)
    1. Device = a LUN on a Fibre Channel SAN in this case, it could also be the storage processor

    A Path, is the storage patch to that LUN, best practice is two have at least two paths to a LUN, e.g. ,multipath, should a path fail, you still have access to the storage (and datastores containing the VMs).

    2. This is the actual physical link to the device, which is symlinked (linked) to a friendly datastore name.
    LVL 10

    Author Comment

    by:Prashant Girennavar
    Thanks for the Answer , That helped.

    So , we have Target name in the detail filed what does that means?

    Also , you said , we need to have multiple path enabled on Luns , so , if we have Devices=7 , and Path = 7 in the detail section does it mean we are not using multipath?

    Please clarify.


    -Prashant Girennavar
    LVL 116

    Accepted Solution

    That's correct that's a 1 to 1 relatonship, no multipath.

    7 devices and 7 paTargets (Fibre Channel and SCSI)

    if a path fails, a LUN (datastore) will fail with all it's VMs on the datastore.

    Number of targets accessed through the adapter. a target is a network connected storage device.

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