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Status Future consideration
Workspace IBM Spectrum Virtualize / FlashSystem
Created by Guest
Created on Nov 8, 2019

RELATED IDEAS

Rebuild used extents with DRAID

The current design in DRAID is rebuild all of exents,even most of extents don't have real data.
Customer hope to DRAID can support optimize mode that only rebuild used space.With optimize mode, rebuild time can be shortened significantly. This is very important to high capacity DRAID.
In addition, system should allow customer to change rebuild rate on demand so that customer can accelerate rebuild rate in any time.

Idea priority High
  • Guest
    Reply
    |     Jan 17, 2020

    Sorry, that was posted to the wrong one! This looks like the earliest RFE for this concern.

    This looks like a lazy build option perhaps. The pro is faster completion time, but the con is that the new drive is not full-media certified. It would definitely need to be an option set on an mdisk rather than a new default, but it does make sense.

  • Guest
    Reply
    |     Jan 17, 2020

    This seems to be a duplicate of https://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=137997 which is just one RFE ID prior.

0 MERGED

DRAID rebuild optimization

Merged
Currently, the rebuild of DRAID must be based on the capacity of the entire damaged hard disk. Regardless of the amount of data on the bad disk, the rebuild speed is the same. The customer needs to be changed to only rebuild used extents to improv...
over 4 years ago in IBM Spectrum Virtualize / FlashSystem 2 Future consideration

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