Loss of disk space is observed when adding disks to existing aggregate
Applies to
- ONTAP 9
- ADP
Issue
When trying to add disks to existing aggregate, the size of the disks is showing smaller than the physical disk size.
Example:
- Physical disk capacity is 14.65TB
- The following command was used to simulate the addition the disks
- In the output below the capacity shows it will use 6.97TB instead of 14.65TB
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.
