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Status Not under consideration
Workspace Storage Protect Family
Categories Spectrum Protect (Server)
Created by Guest
Created on Jul 21, 2011

RELATED IDEAS

Enhancement needed to reduce the number of virtual volumes

See this idea on ideas.ibm.com

When a storagepool is based on a server type
device class (i.e. virtual volumes), it is
difficult to reduce the number of volumes
using move data commands. This is because
when the input volume is done, the process
ends and the output volume is closed and
marked full.

MOVE DATA is used instead of reclaim because
the remote server stores the virtual volumes
on tape and most of the tapes are not in the
library. The source server storage pool is a
copypool so the cost can't be justified to
have a large enough tape library to keep all
the tape volumes resident. Therefore, the
sensible way to simulate a reclaim is to do
move data commands in the source server in
time order.

IMPLEMENTATION SUGGESTION.

Enhance the MOVE DATA command to use a
criteria value to select volumes. Continue
writing to the output virtual volume until
all the input volumes have been processed or
it reaches the maxcap value.

Please see the previous RFE about CRITERIA objects.

Idea priority High
  • Guest
    Reply
    |     Jun 12, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Storage
    Product - Tivoli Storage Manager (TSM) Family

    For recording keeping, the previous attributes were:
    Brand - Tivoli
    Product family - Storage
    Product - Tivoli Storage Manager (TSM) Family

  • Guest
    Reply
    |     Oct 12, 2011

    Hi,

    now that 6.3 is announced, and having read the announcement letter,
    I see the DR enhancements you spoke of. But, implementing this
    would be a HUGH step up in complexity and COST. The functionality
    is not something we need at the time.

    I understand that my current use of virtual volumes is not a useable
    DR site, but I never planned on having that. I just want protection
    against bad primary media and hash collisions. I should be able to
    consolidate many low utilized volumes into one fully utilized volume
    just like I can do with real tapes.

    Please reconsider this RFE and continue to add enhancements for
    for users who aren't ready or don't needd the latest, most functional
    deployment.


    Thanks,

    Bill Colwell

  • Guest
    Reply
    |     Aug 10, 2011

    Thank you for submitting this enhancement request, we do understand the requirement and the rationale behind it but unfortunately we currently do not plan to implement this enhancement request for virtual volumes, the next release of TSM will include some functionality that will address DR scenarios more efficiently

  • Guest
    Reply
    |     Jul 21, 2011

    Attachment (Use case): Information from the source and target servers to show my current process and how much easier it would be with the enhancement.

    virtvol-reclaim...
    virtvol-reclaim-doc.txt
     virtvol-reclaim-doc.txt

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