eG Monitoring
 

Measures reported by NexentaVolStTest

To ensure peak storage performance, storage administrators should continuously track the status and space usage of each of the volumes in the NexentaStor device, proactively identify faulty, unavailable, and space-hungry volumes, and promptly remedy the problem condition. If this is not done, the abnormal state of or the lack of space in some volumes may go unnoticed, causing I/O requests to the device to fail consistently! This is where the NexentaVolStTest test helps!

This test auto-discovers the volumes on the NexentaStor and reports the current status and space utilization of the volume. Using this test, you can easily identify abnormal volumes and those that are running short of space.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
usedSize Indicates the amount of space that is currently in use in this volume. MB  
freeSize Indicates the amount of space that is currently available for use in this volume. MB A high value is desired for this measure. Compare the value of this measure across the volumes to identify the volume with the least space. You may want to expand the storage capacity of such volumes, by adding more disks to them.
usedPercent Indicates the percentage of space that is currently utilized in this volume. Percent A value close to 100% indicates that the volume is currently running out of space. Compare the value of this measure across the volumes to know which volumes are experiencing a space crunch right now. You may want to expand the storage capacity of such volumes, by adding more disks to them.
status Indicates the current status of this volume.   The values that this measure can report and their corresponding numeric values are tabulated below:

Measure Value Numeric Value
Offline 0
Online 1
Degraded 2
Unavail 3
Faulted 4
Removed 5

Note:

By default, this measure reports the above-mentioned Measure Values while indicating the status of the volume. However, in the graph of this measure, volume status will be represented using the corresponding numeric equivalents only.