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macyero

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macyero

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September 28th, 2020 13:00

VMAX 40K - Removing noport devices

Hi,

I noticed on the VMAX 40K there are over 700 devices that are listed in the -noport. Shouldn't the majority of devices be removed since they are in Not_Ready state, Not bounded to a Pool, and Not connected to an FA? Is there a best practices to keep a certain number of these devices?

Is there a simpler way to clean this up and do I have to balance the pools once the devices have been reclaimed?

Thanks,

  • DELL-Sam L

    Community Manager

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    Posted September 29th, 2020 14:00

    Hello macyero,

    Here is a link to a KB that maybe of assistance. https://dell.to/34dWEkh

  • macyero

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    Posted October 1st, 2020 08:00

    Thank you Sam

    I forgot to mention that when you perform the following command:

    [root ~]# symdev -sid [MY_SID] list -noport | wc -l

    it shows over 600 devices. Listed below is how the most of the devices show up:

    [root ~]# symdev -sid [MY_SID] list -noport

    Symmetrix ID: 000000000000

    Device Name Dir Device
    ---------------------------- ------- -------------------------------------
    Cap
    Sym Physical SA Config Attribute Sts (MB)
    ---------------------------- ------- -------------------------------------
    009DF Not Visible ???:??? TDEV N/Grp'd NR 34530

    ...

    Each device I would run the following to verify. Any METAs I dissolve: 

    [root ~]# symdev -sid [MY_SID] show 009DF

    [root ~]# symdev -sid [MY_SID] show 009DF | grep "Device Status"
    Device Status : Not Ready (NR)

    [root ~]# symdev -sid [MY_SID] show 009DF | grep "Meta Device Members"

    [root ~]# symdev -sid [MY_SID] show 009DF | grep "Bound Pool Name"
    Bound Pool Name : N/A

    [root ~]# symdev -sid [MY_SID] show 009DF | grep "Front Director Paths"
    Front Director Paths (0): N/A

    With this array there are many devices that show they are set as Not_Ready (NR), Not bound to a pool or FA. Is there any reason to keep so many of these devices? Just checking if there is a best practices to keep for example 50 devices for future use.

    Thanks,