eG Monitoring
 

Measures reported by ClariionDiskTest

This test reveals the state, I/O activity, and overall health of each disk supported by the system.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
State Indicates the current state of the disk.   The states of the disk along with the corresponding numeric values are indicated in the table below:

Value State
0 Failed
1 Off
2 Removed
3 Binding
4 Empty
5 Enabled
6 Expanding
7 Unbound
8 Powering up
9 Ready
10 Reduced power, Transitioning
11 Hot spare ready
12 Unknown
13 Formatting
14 Equlizing
15 Rebuilding
16 Full power
17 Low power
18 Unformatted
19 Unsupported

Note:

By default, this measure reports any of the above-mentioned states while indicating the status of the disk. However, in the graph of this measure, states will be represented using their numeric equivalents only - i.e., 0 to 19.
Lun_count Indicates the number of Luns that are sharing this Disk Number Use the detailed diagnosis of this measure to know which LUNs are sharing this disk.
Busy Indicates the percent utilization of this disk. Percent The values in percent and their respective states are listed below:
  • 90%-Critical(Disk Full)
  • 80%-Major
  • 60%-Minor
Hard_read_errors Indicates the number of hard read errors in this disk. Number The values and their respective states are listed below:
  • 10 - critical
  • 5 - major
  • 2 - minor

Increase in value of this measure indicates that the disk life is going to end or fail.
Hard_write_errors Indicates the number of hard write errors in this disk. Number The values and their respective states are listed below:
  • 10 - critical
  • 5 - major
  • 2 - minor

Increase in value of this measure indicates disk life is going to end or fail.
Soft_read_errors Indicates the number of uncorrected read errors in this disk. Number The values and their respective states are listed below:
  • 10 - critical
  • 5 - major
  • 2 - minor

Increase in value of this measure indicates disk life is going to end or fail.
Soft_write_errors Indicates the number of uncorrected write errors in this disk. Number The values and their respective states are listed below:
  • 10 - critical
  • 5 - major
  • 2 - minor

Increase in value of this measure indicates Disk life is going to end or fail.
Read_requests Indicates the rate at which read requests are made to this disk. Reqs/sec Compare the value of these measures across disks to isolate overloaded disks. This will also reveal irregularities in load balancing across disks.
Write_requests Indicates the rate at which write requests are made per second to this disk. Reqs/sec
Data_reads This measure indicates the rate at which data is read from this disk. MB/Sec  
Data_writes Indicates the rate at which data is written to this disk. MB/Sec  
Total_bandwidth This measure indicates the sum of data reads and data writes to this disk. MB/Sec  
Disk_capacity Indicates the total size of this disk. GB  
User_capacity Indicates the amount of space on this disk that is assigned to bound LUNs. GB  
Used_percent Indicates the percentage of space in this disk that is currently in use. Percent Ideally, the value of this measure should be low. A consistent increase in this value could indicate a gradual, but steady erosion of space in the disk.
Read_retry Indicates the number of times read requests to this disk were retried. Number A low value is desired for this measure.
Write_retry Indicates the number of times write requests to this disk were retried. Number A low value is desired for this measure.
Remap_sector Indicates the number of sectors on this disk that were remapped to new locations on the disk due to read/write errors. Number A low value is desired for this measure.
Request_service_time Indicates the time taken by this disk to service requests. Secs A high value is typically indicative of a request processing bottleneck in the disk. Compare the value of this measure across disks to know which disks are experiencing significant latencies.