Skip to main content
NetApp Knowledge Base

Why does a single disk have higher utilization that the others in the same raid group?

  1. Last updated
  2. Save as PDF
Views:
138
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

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

Additional Information

NA

 

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.