Goal

Solution

Turning On Performance Collection

When turning on performance collection, there are three items to set:

Polling Interval:

Set for 1, 5, or 15 minutes. At this interval, the array will be contacted for new array data for all fields, and the management software will be updated with
the new statistics. Calculations for statistics will be made over this interval.

Data Retention Period:

Set for 1 hour, 2 hours, 4 hours, 1 day, or forever. This setting dictates how long the Peak data will be listed in the output collected. This only affects the collection of peak data until collection is turned off.

Baseline Time: (only for 2510 iSCSI based storage arrays with 7.35 firmware or later)

Clicking the Set Baseline button sets the baseline time to the current array system time, and the counters will display based on the values at that time.

Changing State via sscs CLI

sscs modify -a array --status on|off --poll 1|5|15 --retention forever|1HR|2R|4HR|1DAY performance

example:

sscs modify -a array --status on --poll 1 --retention 1HR

You can list these settings with :

sscs list -a array -T performance
Array: array
State:                  On
Polling Interval:       1 minute
Data Retention Period:  1 hour      

Changing State via sscs CLI for iSCSI Performance

(2510 with 7.35 firmware or later)

sscs modify -a array --status on|off --poll 1|5|15 --retention forever|1HR|2R|4HR|1DAY --baseline true|false iperformance
NOTE: For 2510, both resource-type keyword "iperformance" and "performance" can be used to change state for data collection.

Example:

# sscs modify -a array --status on --poll 5 --retention forever --baseline true iperformance

You can list these settings with:

# sscs list -a array --settings iperformance

Array: array

  State:                  On

  Polling Interval:       5 minutes

  Data Retention Period:  Forever

ARRAY NAME:                                         array

==================================================  

BASELINE STATISTICS                                 

======================                              
Controller A Baseline Time:                         March 3, 2010 2:28:38 PM EST
Controller B Baseline Time:                         March 3, 2010 2:29:14 PM EST

  :

  : (etc...)

  :

Changing State via Browser

In the left-hand menu:
1) Expand Storage Systems
2) Expand Your Array Name
3) Expand Administration
4) Click Performance Monitoring

In the main window:
5) Check Performance Monitoring Enabled
6) Select Polling Interval
7) Select Data Retention Period
8) Click Save

NOTE: If array is 2510 iSCSI, click Set Baseline button to set baseline time in this window

Statistics Collection

Statistics can be collected at any time via any interface after monitoring
has been enabled, and at least one polling interval has gone by.

Statistics can be collected at the overall array level, per controller level, or per volume.

Array Statistics Collection

Collecting via Browser:

1) Expand Storage Systems
2) Expand Your Array Name
3) Expand Administration
4) Click Performance Monitoring

Collecting via sscs CLI

sscs list -a array --type array_stats performance

Collecting via sscs CLI for 2510

sscs list -a array --type array_stats --baseline true|false iperformance

Controller Statistics Collection

Collecting via Browser:

sscs CLI

sscs list -a array --type controller_stats performance

Collecting via sscs CLI for 2510:

sscs list -a array --type controller_stats --baseline true|false iperformance

Volume Statistics Collection

Collecting via browser

1) Expand Storage Systems
2) Expand Your Array Name
3) Click Volumes
4) Click View Performance Statistics button

Collecting via sscs CLI:

sscs list -a array --type volume_stats -g hostgrp -h host -v volume performance

Collecting via sscs CLI for 2510:

sscs list -a array --type volume_stats -g hostgrp -h host -v volume --baseline true|false iperformance

NOTE: The hostgrp, volume, and host values may be comma delimited for listing multiple hosts, hostgroups, or specific volumes. Without these options, the output will list all array volumes and their performance statistics.

Available Statistics

The statistics available are the same for any collection. They are defined as
follows for a given object name for the given interval:

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