Performance thresholds Performance thresholds tasks Performance thresholds properties

You can use the Performance thresholds panel to view and set thresholds for a performance data collection task.

You can use the Performance thresholds panel to enable thresholds, set error and warning levels for thresholds, and select alerting levels for each threshold. Performance Manager checks devices for which thresholds are enabled to see if any of the performance statistics exceed the threshold values.

Menu path
Multiple Device Manager Task pane --> Manage performance --> Thresholds task --> Performance thresholds panel
Fields
Panel name
Instructions
Device ID
Device type
Threshold name
Threshold status
Warning level
Error level
Alert level
Enable
Disable
Copy threshold properties
Filters
Properties
Help

A description of the thresholds follows. It includes the storage device defaults:

Note:Note: Not all of the listed thresholds are displayed for a selected device. The thresholds are device dependent.
Threshold Name
Description
Disk Utilization
Percent of time busy for each ESS array. ESS defaults:
  • Status: Enabled
  • Warning: 50
  • Error: 80
Percent of sequential I/Os
Percent of sequential I/Os for the ESS. ESS defaults:
  • Status: Enabled
  • Warning: 80
  • Error: 80
Nonvolatile Storage
Percent of time full for the ESS. ESS defaults:
  • Status: Enabled
  • Warning: 3
  • Error: 10
Average cache holding time
Measured in seconds for each ESS cluster. ESS defaults:
  • Status: Enabled
  • Warning: 60
  • Error: 30
I/Os rate
Total number of I/Os requests for each ESS cluster. ESS defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
VDisk I/Os rate
Total number of virtual disk I/Os for each I/O group. SVC defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
VDisk bytes per second
Virtual disk bytes per second for each I/O group. SVC defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
MDisk I/O rate
Total number of managed disk I/Os for each managed disk group. SVC defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
MDisk bytes per second
Managed disk bytes per second for each managed disk group. SVC defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
Data transaction (count per second)
Total server-level data transaction rate. SVC defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
Data transaction for updates (count per second)
Total server-level data transaction rate. SVC defaults:
  • Status: Disabled
  • Warning: None
  • Error: None
Related topics Performance thresholds tasks Performance thresholds properties

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