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既存のアグリゲートにディスクを追加したときにディスクスペースが失われる

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環境

  • ONTAP 9
  • ADP

問題

既存のアグリゲートにディスクを追加しようとすると、ディスクのサイズが 物理ディスクのサイズよりも小さく表示されます。

例:

  • 物理ディスク容量は 14.65TB
  • 次のコマンドを使用して、ディスクの追加をシミュレートしました。
  • 次の容量の出力では、14.65TBではなく6.97TBが使用されることが示されています。

cluster1::> aggr add-disks -aggregate Data_aggr1 -disktype SSD-CAP -diskcount 6 -simulate true

Disks would be added to aggregate "Data_aggr1" on node "cluster1-01" in the following manner:

First Plex

RAID Group rg0, 6 disks (block checksum, raid_dp)
Usable Physical
Position Disk Type Size Size
---------- ------------------------- ---------- -------- --------
shared 8.0.44 SSD-CAP 6.97TB 6.97TB
shared 8.0.40 SSD-CAP 6.97TB 6.97TB
shared 8.0.29 SSD-CAP 6.97TB 6.97TB
shared 8.0.34 SSD-CAP 6.97TB 6.97TB
shared 8.0.35 SSD-CAP 6.97TB 6.97TB
shared 8.0.41 SSD-CAP 6.97TB 6.97TB

Aggregate capacity available for volume use would be increased by 39.75TB.

The following disks would be partitioned: 8.0.29, 8.0.34, 8.0.35, 8.0.41.

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