eG Monitoring
 

Measures reported by NimbleVolumeTest

For users to be able to read from/write data into volumes quickly, the volumes must be online and adequate space must be available in the volumes. Slowdowns in data storage/retrieval can be attributed to storage space contentions experienced by one/more volumes or I/O processing bottlenecks. In the event of such slowdowns, administrators need to swiftly isolate the following:

  • Are the volumes currently online?

  • Which volumes are over-utilized?

  • Which volumes are overloaded?

The NimbleVolumeTest provides accurate answers to these questions. With the help of these answers, you can quickly diagnose the root-cause of slowdowns when reading from/writing into a volume. The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
IS_volume_online Indicates whether/not this volume is online.   This measure reports the value Yes if this volume is currently online and the value No if otherwise.

The values reported by this measure and their numeric equivalents are available in the table below:

Measure Value Numeric Value
Yes 1
No 0

Note:

This measure reports the Measure Values listed in the table above while indicating whether this volume is currently online or not. However, in the graph of this measure, the state is indicated using only the Numeric Values listed in the above table.
Total_space Indicates the total capacity of this volume. TB  
Used_space Indicates the amount of space that is already utilized in this volume. TB If the value of this measure is close to that of the Total_space measure, it indicates that the volume is running out of space.
Free_space Indicates the amount of spacec that is currently available for use in this volume. TB A high value is desired for this measure.
Space_utilization Indicates the percentage of space that is utilized in this volume. Percent A low value is desired for this measure.
Pct_free_space Indicates the percentage of space that is available for use in this volume. Percent A high value is desired for this measure.
iSCSI_Connections Indicates the number of iSCSI connections established to this volume. Number This measure is a good indicator of the current workload on the volume.