Disk Minimum Free (%) without Rebalance is used to determine if a disk group requires rebalance. Temporary imbalances (caused by a rebalance in progress) are ignored.
The rest of the information in this section is only valid for this metric when it appears in either the Enterprise Manager Grid Control or the Enterprise Manager Database Control (if applicable).
The following table shows how often the metric's value is collected and compared against the default thresholds. The 'Consecutive Number of Occurrences Preceding Notification' column indicates the consecutive number of times the comparison against thresholds should hold TRUE before an alert is generated.
|
Target Version |
Evaluation and Collection Frequency |
Upload Frequency |
Operator |
Default Warning Threshold |
Default Critical Threshold |
Consecutive Number of Occurrences Preceding Notification |
Alert Text |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
Every 15 Minutes |
After Every Sample |
< |
20 |
10 |
1 |
Disk Group %diskGroup% requires rebalance because at least one disk is low on space. |
For this metric you can set different warning and critical threshold values for each "Disk Group" object.
If warning or critical threshold values are currently set for any "Disk Group" object, those thresholds can be viewed on the Metric Detail page for this metric.
To specify or change warning or critical threshold values for each "Disk Group" object, use the Edit Thresholds page. See Editing Thresholds for information on accessing the Edit Thresholds page.
Disk Minimum Free (%) without Rebalance is the same value as Actual Minimum Percent Free if a rebalance operation is not in progress, 100 otherwise.
A warning alert will be generated if Disk Minimum Free (%) without Rebalance is less than or equal to 20%. In this case a rebalance is necessary because at least one disk is low on space. The user should manually initiate a rebalance operation.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
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