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Status Future consideration
Workspace z/OS
Categories DFSMS SMS
Created by Guest
Created on Jan 26, 2022

RELATED IDEAS

DFSMS and improved volume selection in a Storagegroup.

Any installation changes volume size over the years.
From M3 to M54 and now many of us use EAVs as well.
So the storagegroups is typically a mix volumes with different sizes; from a few GBs to many GBs.
The key criteria for SMS volume selection under allocation is percent freespace.
If it supported net values of freespace instead we could improve the allocations a lot.

Idea priority High
  • Guest
    Reply
    |     Jan 27, 2022

    Probably already know to you, but just in case : As work around, perhaps change volume status to disnew for the small volumes. If you are using EAV's, the capacity for M3-M27 might be neglectable. M54 too, depending on the amount of volumes off course. With luck, the small volumes will drain empty so you can take them out of config.

    Depending on vtoc size, maybe dynamic volume expansion can help to get the smallest volumes out of config (without having to set volumes offline).

    In our site we have a mix as well, not M3 combined with EAV, so haven't had problems with this. But I can see the issue and think your idea can have added value, therefor voted..

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