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ボリュームで使用できるアグリゲート容量のサイズが異なります

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fas-systems<a>アグリゲート</a><a>RAIDグループ</a><a>2010062777</a>
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環境

ONTAP 9

問題

新しいアグリゲート と 同じ数のディスクで作成した新しいRAIDグループでボリュームに使用できるアグリゲート容量が異なります
 

cluster::> aggr create -aggregate aggr02 -diskcount 12 -mirror true -simulate true -node cluster-01
The layout for aggregate "aggr02" on node "cluster-01" would be:
 
First Plex
 
  RAID Group rg0, 6 disks (block checksum, raid_dp)
                            Usable Physical
   Position   Disk            Type       Size    Size
   ---------- ------------------------- ---------- -------- --------
   shared    1.0.13           SSD-NVM       -     -
   shared    1.2.4            SSD-NVM       -     -
   shared    1.2.5            SSD-NVM    3.48TB   3.48TB
   shared    1.2.6            SSD-NVM    3.48TB   3.48TB
   shared    1.2.7            SSD-NVM    3.48TB   3.48TB
   shared    1.2.8            SSD-NVM    3.48TB   3.48TB
 
Second Plex
 
  RAID Group rg0, 6 disks (block checksum, raid_dp)
                            Usable Physical
   Position   Disk            Type       Size    Size
   ---------- ------------------------- ---------- -------- --------
   shared    2.1.23           SSD-NVM       -     -
   shared    2.2.4            SSD-NVM       -     -
   shared    2.2.5            SSD-NVM    3.48TB   3.48TB
   shared    2.2.6            SSD-NVM    3.48TB   3.48TB
   shared    2.2.7            SSD-NVM    3.48TB   3.48TB
   shared    2.2.8            SSD-NVM    3.48TB   3.48TB
 
Aggregate capacity available for volume use would be 11.91TB.


cluster::> aggr add-disks -aggregate aggr01 -diskcount 12 -simulate true
Disks would be added to aggregate "aggr01" on node "cluster-01" in the following manner:
 
First Plex
 
  RAID Group rg1, 6 disks (block checksum, raid_dp)
                            Usable Physical
   Position   Disk            Type       Size    Size
   ---------- ------------------------- ---------- -------- --------
   shared    1.0.13           SSD-NVM       -     -
   shared    1.2.4            SSD-NVM       -     -
   shared    1.2.5            SSD-NVM    3.48TB   3.48TB
   shared    1.2.6            SSD-NVM    3.48TB   3.48TB
   shared    1.2.7            SSD-NVM    3.48TB   3.48TB
   shared    1.2.8            SSD-NVM    3.48TB   3.48TB
 
Second Plex
 
  RAID Group rg1, 6 disks (block checksum, raid_dp)
                            Usable Physical
   Position   Disk            Type       Size    Size
   ---------- ------------------------- ---------- -------- --------
   shared    2.1.23           SSD-NVM       -     -
   shared    2.2.4            SSD-NVM       -     -
   shared    2.2.5            SSD-NVM    3.48TB   3.48TB
   shared    2.2.6            SSD-NVM    3.48TB   3.48TB
   shared    2.2.7            SSD-NVM    3.48TB   3.48TB
   shared    2.2.8            SSD-NVM    3.48TB   3.48TB
 
Aggregate capacity available for volume use would be increased by 12.57TB.

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