Storage health check

When your storage needs are running short, you need to know immediately so that you can mitigate the risk of losing data. Storage health checks are based on disk space availability and the estimated number of days that can be logged. BMC Defender Server displays a pop-up message to all users that they must acknowledge to continue. The message returns periodically until corrective action is taken.

Related topic

Administering

As the available space decreases, the message and the status change. When the emergency threshold is breached, all collection stops and incoming messages are discarded until sufficient disk space is made available.

The storage health check includes the following features:

  • Log messages for disk status messages
  • Advisories for disk status messages
  • Correlation thread to track all advisories for disk space warnings
  • Alert for correlation thread messages (1 in 60 seconds)
  • One ticket per alert

Best practice
No default ticket actions are included, so we recommend that you, as the administrator, configure the system to issue email messages or SMS text messages or both, especially for emergency conditions.

The following example shows a pop-up alert when free storage space is critical:

healthCheckPopup.png


Storage thresholds

The following thresholds for the log, catalog, and archive storage locations are checked every five minutes when the system reads the installationDirectory\advisory\limits.cnf file:

Threshold

Description

Warning_Disk_Percent_Free

Warning severity threshold for disk space

The value cannot be less than Critical_Disk_Percent_Free + 1.

The default value is 25.

Critical_Disk_Percent_Free

Critical severity threshold for disk space

The value cannot be less than Min_Disk_Percent_Free + 1.

The default value is 15.

Min_Disk_Percent_Free

Alert severity threshold for disk space

The value cannot be less than 1.

The default value is 10.

Warning_Disk_Days_Free

Warning severity threshold for day space

The value cannot be less than Critical_Disk_Days_Free + 1.

The default value is 7.

Critical_Disk_Days_Free

Critical severity threshold for day space

The value cannot be less than Min_Disk_Days_Free + 1.

The default value is 5.

Min_Disk_Days_Free

Alert severity threshold for day space

The value cannot be less than 2.

The default value is 3.

Emergency (hardcoded)

(SPE2407)

Emergency severity threshold for log disk space that stops all message collection

The hardcoded value is 500 MB.

(Before 2407)

Emergency severity threshold for day space that stops all message collection

The hardcoded value is 1.

Warning

When this threshold is breached, all collection stops and incoming messages are not written to disk until sufficient disk space is made available.

To change the threshold, enter the parameter and value in limits.cnf.

Important

Health checks are performed every five minutes for all advisory checks, such as storage space and failed services.

When a storage health threshold is breached, the system creates advisories and syslog messages. 

To see the current storage status

From the More menu at the top of the page, select System Info. 

You can see the following log, catalog, and archive storage statistics:

  • Storage path
  • Amount of space used and available in the file system
  • Status of the free storage space
  • Status of the free day space

Hover over the question mark to see the thresholds.

SystemInfo_storageStats.png

If the system has run less than 24 hours after installation or startup, the Day Space value is blank.




 

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