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tarekj's avatar
tarekj
Tutor
Jan 03, 2017
Solved

NetGear ReadyNAs 4220 Snapshot

Hello, I have Ready NAS storage 4220, I made volume consists of 5 disks (5*4TB) with RAID 5 and I made ISCSI Lun with size (13.48 TB) , the free space is (1.05TB) after three snapshots , I received e...
  • StephenB's avatar
    Jan 03, 2017

    When you first make a snapshot it uses no space.  Every time a block changes in the LUN, the snapshot space goes up by a block.  So the required snapshot space depends on the usage pattern.

     

    With BTRFS it's good to maintain about 15% free space, and that's what you started with (with no snapshots).  So maybe add another 4 TB drive to the array?

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