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IT37724: THROTTLING DOES NOT REALLOCATE AVAILABLE BANDWIDTH

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APAR status

  • Closed as program error.

Error description

  • IBM Spectrum Protect Plus throttling does not reallocate
    available
    
    bandwidth to other vSnaps when multiple vSnaps exist in a
    single site.
    
    Example:
    
    Site A throttles to 100 MB/s.
    Site A contains 5 vSnaps
    
    100MB/5 = 20MB/s per vSnap assuming all 5 are in use.
    If only 4 are in use, each needs to be throttled to 25.
    
    Once 1 or more vSnaps are no longer in use, their allocated
    bandwidth
    should be reallocated to vSnap currently in use.
    
    Versions affected: 10.1.X
    
    Keywords: TS005657061
    

Local fix

  • Open the site settings in the UI and click "SAVE". This will
    reallocate
    
    the bandwidth accordingly.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * IBM Spectrum Protect Plus level 10.1.5, 10.1.6, 10.1.7,      *
    * 10.1.8                                                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in IBM Spectrum Protect Plus level     *
    * 10.1.9. Note that this is subject to change at the           *
    * discretion of IBM.                                           *
    ****************************************************************
    

Problem conclusion

  • Implemented code fixes around the propagation of throttle
    information when multiple vSnap servers within a site are
    replicating data. The fixes ensure that when a subset of vSnaps
    in the site finish replicating, the available throttle capacity
    is redistributed to other active vSnaps.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT37724

  • Reported component name

    SP PLUS

  • Reported component ID

    5737SPLUS

  • Reported release

    A17

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-07-21

  • Closed date

    2021-10-04

  • Last modified date

    2021-10-04

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    SP PLUS

  • Fixed component ID

    5737SPLUS

Applicable component levels

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSNQFQ","label":"IBM Spectrum Protect Plus"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"A17","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
31 January 2024