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Status Not under consideration
Workspace Storage Protect Family
Categories Spectrum Protect (Server)
Created by Guest
Created on Sep 10, 2013

RELATED IDEAS

Add tunable to enable increase disk IO block size from 256kB

The TSM server on Linux is currently using Direct IO with a 256kB block size when doing IO to/from DISK/FILE volumes.

The decision to use 256kB was made a long time ago, and the current state of technology is that this block size is simply to small to be able to utilize the full performance of some configurations.

Tests show that increasing the block size can have a dramatic impact of the data rate achieved, a factor 3 improvement is seen in our environment.

Our suggestion is that a mechanism is added that allows the possibility to increase the disk IO blocksize, or that the disk IO blocksize is simply increased to a new value.

The increased memory usage by the TSM server process would be negligible compared to the amount of memory available in current TSM server hardware.

Idea priority Medium
  • 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
    |     Feb 2, 2014

    Thank you for submitting this request. This is a recognized requirement and a solution appears to be desirable. This request is not in a committed release plan for this year, but the theme is aligned with our multi-year strategy, and will be a candidate for our future release. IBM’s plans may change and no commitment is made that a solution will be provided.

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