Will added, renamed or moved files affect recovery in FlexRAID Snapshot mode?

No, FlexRAID in Snapshot mode can deal with added, renamed and moved files just fine.

In FlexRAID’s implementation of Snapshot RAID:
- renaming, moving data does NOT invalidate the parity
- adding data does NOT invalidate the parity (existing data and parity are in sync, but new data will not be protected until an update is run)
- editing and deleting data does
- when the RAID is out of sync, you stem to lose data up to the amount of changed data (multiple parity configurations further minimize that effect)

Of course, this topic is irrelevant to Real-Time parity.

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2 Responses to “Will added, renamed or moved files affect recovery in FlexRAID Snapshot mode?”

  1. xliv August 30, 2011 at 2:14 AM #

    What about files that are moved through the Storage Pool? I guess no impact either
    And the ones that would be moved from 1 DRU to another? Here I think it corresponds to 1 deletion + 1 addition, right?

  2. Brahim August 30, 2011 at 3:48 PM #

    If all the drives that are part of the storage pool or the file is moved to a drive part of the Snapshot RAID, recovery will be fine.
    Note that the Verify and Validate task will fail because the RAID would be technically out of sync, but FlexRAID has a unique ability to recover from a RAID out of sync as long as the actual bit data has not been edited.

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