eG Monitoring
 

Measures reported by VrtxVDiskTest

VRTX's Shared PowerEdge Raid Controller (SPERC) allows RAID groups to be configured and then allows for those RAID groups to be subdivided into individual virtual disks that can be presented out to either single or multiple blades.

If one/more of these virtual disks experience critical issues or fail, then they will be rendered unusable by the blade servers. In the absence of sufficient virtual disk space, blade server performance will begin to degrade shortly thereafter. To make sure that the blade servers are able to maintain high levels of performance at all times, virtual disk health should be monitored continuously, problems captured instantly, and administrators notified of these problems promptly. This is precisely what the VrtxVDiskTest test does!

This test monitors every virtual disk configured in the VRTX and tracks the current health and operational status of each virtual disk. In the process, the test highlights those virtual disks that are deviating from the norm and draws administrator attention to them.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Health_status Indicates how healthy this probe currently is.   The values that this measure can report and their corresponding numeric values are discussed below:

Measure Value Numeric Value
Other 1
Unknown 2
Normal 3
NonCritical 4
Critical 5
NonRecoverable 6

Note:

By default, this measure reports one of the Measure Values listed above to indicate the current health of a virtual disk. In the graph of this measure however, the same is represented using the numeric equivalents only.

Current_state Indicates the current operational status of this virtual disk. Watts The values that this measure can report and their corresponding numeric values are discussed below:

Measure Value Numeric Value
Failed 0
Unknown 1
Online 2
Degraded 4

Note:

By default, this measure reports one of the Measure Values listed above to indicate the current operational status of the virtual disk. In the graph of this measure however, the same is represented using the numeric equivalents only.
Disk_size Indicates current capacity of this virtual disk. GB  
Diskstrip_size Indicates the current stripe size of this virtual disk. GB The values that this measure can report and their corresponding numeric values are discussed below:

Measure Value Numeric Value
Other 1
Default 2
520 bytes 3
1 KB 4
2 KB 5
4 KB 6
8 KB 7
16 KB 8
32 KB 9
64 KB 10
128 KB 11
256 KB 12
512 KB 13
1 MB 14
2 MB 15
4 MB 16
8 MB 17
16 MB 18

Note:

By default, this measure reports one of the Measure Values listed above to indicate the stripe size of the virtual disk. In the graph of this measure however, the same is represented using the numeric equivalents only.
Read_policy Indicates the read policy used by the controller to read from this virtual disk.   The values that this measure can report and their corresponding numeric values are discussed below:

Measure Value Numeric Value
No read ahead 1
Read ahead 2
Adaptive read ahead 3

Note:

By default, this measure reports one of the Measure Values listed above to indicate the read policy of the virtual disk. In the graph of this measure however, the same is represented using the numeric equivalents only.
Write_policy Indicates the write policy used by the controller to write data to this virtual disk.   The values that this measure can report and their corresponding numeric values are discussed below:

Measure Value Numeric Value
Write through 1
Write back 2
Write back force 3

Note:

By default, this measure reports one of the Measure Values listed above to indicate the write policy of the virtual disk. In the graph of this measure however, the same is represented using the numeric equivalents only.