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削除がSnapshotで使用されるディスクスペースに与える影響

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環境

ONTAP 9

回答

スナップショットのタイムスタンプを比較することで、削除されたデータのサイズに対応するディスクスペースを消費するのは、後で作成されたスナップショットだけです。
: Snapshotには、SnapMirrorベースラインSnapshotも含まれます。
 

lccls91001::*> set adv -confirmations off; run local snap status vol4

Volume vol4
snapid  status    date       ownblks release fsRev name
------  ------    ------------   ------- ------- ----- --------
 3    complete   Sep 27 16:05   12913  9.11 44038 snapshot2
  2    complete   Sep 26 16:05     32   9.11 44038 snapshot1
  1    complete   Sep 25 16:05     32   9.11 44038 hourly.2022-09-25_1605


lccls91001::*> snapshot show -volume vol4
                                 ---Blocks---
Vserver  Volume   Snapshot                  Size Total% Used%
-------- -------- ------------------------------------- -------- ------ -----
svm91001 vol4
          hourly.2022-09-25_1605           128KB    0%   50%
          snapshot1                 128KB    0%   50%
          snapshot2                 50.44MB 25%  100%
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