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statistics disk show

Disk throughput and latency metrics

Availability: This command is available to cluster administrators at the advanced privilege level.

Description​

This command continuously displays performance data for disks at a regular interval. The command output displays data in the following columns:

  • Disk - disk name.
  • Node - node name.
  • Busy (%) - percentage of time there was at least one outstanding request to the disk.
  • Total Ops - total operations per second.
  • Read Ops - read operations per second.
  • Write Ops - write operations per second.

Parameters​

[-disk <text>] - Disk
Selects the disk for which you want to display performance data.
[-node {<nodename>|local}] - Node
Selects the node for which you want to display performance data.
[-sort-key <text>] - Column to Sort By
If this parameter is specified, the command displays statistics sorted by the specified column.
-interval <integer> - Interval
Specifies, in seconds, the interval between statistics updates. The default setting is 5 seconds.
-iterations <integer> - Iterations
Specifies the number of iterations the command runs before terminating. The default setting is 1. If the number is 0 (zero), the command continues to run until you interrupt it by pressing Ctrl-C.
-max <integer> - Maximum Number of Instances
Specifies the maximum number of disks to display. The default setting is 25.

Examples​

The following example displays disk statistics: 

cluster1::> statistics disk show
cluster1 : 12/31/1969 16:00:04
                                                 
                   Busy *Total Read Write 
 Disk         Node  (%)    Ops  Ops   Ops 
 -------- -------- ---- ------ ---- ----- 
 VMw-1.31    node2    0      2    2     0 
 VMw-1.30    node2    0      3    0     3 
 VMw-1.3     node1    0      0    0     0 
 VMw-1.29    node2    0      1    0     1 

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