Accusys ExaRAID GUI - Manual (Page 120)

Using the RAID GUI
2-80
To make the settings effective, click Apply.
2.11 Performance Management
2.11.1 Hard disks
This feature allows you to enable, disable, or reset disk IO logging for all
hard disks.
When hard disk IO logging is enabled, the following data will be
displayed. You can press the Reset button to clear all statistics except
outstanding IO and disk utilization to zero.
Note
Faster GUI refresh rates may degrade the performance of controller.
Category Display
HDD ID Hard disk identifier
Read
Command
(sector)
The number of read commands executed since the
disk was powered on
The accumulated transfer size of read commands since
the disk was powered on
Write
Command
(sector)
The number of write commands executed since the
disk was powered on
The accumulated transfer size of write commands since
the disk was powered on
Response Time
(ms)
The average command response time since the disk
was powered on
The maximum command response time since the disk
was powered on
Outstanding IO
The number of current outstanding IO in the disk
The number of current outstanding IO in the controller’s
IO scheduler queue
Disk Utilization
The disk utilization in the last second
The disk utilization in the last five seconds
Note
When the redundant-controller system is in use, all the statistics
information of the hard disks in both controllers (Controller A and B)
will be displayed on the screen.