Why does a single disk have higher utilization that the others in the same raid group?
Applies to
- ONTAP 9
- Advanced Disk Paritioning (ADP)
Answer
Statistics disks show
shows higher utilization when a disk is partitioned and shows combined utilization of both partitions.- Example: Disk 1.0.0 shows 91% busy compared to other disks in the raid group.
Cluster::*> statistics disk show -node nodename -sort-key disk_busy
Cluster : 5/15/2024 10:10:10
*Busy Total Read Write Read Write Latency
Disk Node (%) Ops Ops Ops (Bps) (Bps) (us)
----- -------------- ----- ----- ---- ----- ------- ------- -------
1.0.0 nodename 91 208 193 14 7242752 3432448 21008
1.0.3 nodename 48 231 212 18 8062976 4131840 21242
1.0.11
nodename 48 225 208 16 6968320 3825664 19085
1.0.5 nodename 47 235 216 19 7627776 4260864 20330
1.0.13
nodename 47 216 199 16 7601152 3934208 18361
1.0.9 nodename 46 216 201 14 6908928 3716096 19572
- To show the utilization of individual partitions, we recommend using
statit
.
Additional Information
NA