Accusys ExaRAID GUI - Manual (Page 121)

Using the RAID GUI
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2.11.2 Cache
This feature allows you to enable, disable, or reset buffer cache IO
logging.
When cache IO logging is enabled, select the cache type (volume,
logical disk, or JBOD disk) to be displayed from the drop-down menu. The
following IO statistics will be displayed. You can press the Reset button to
clear all statistics except dirty buffer and clean buffer to zero.
2.11.3 LUN
This feature allows you to enable, disable, or reset LUN IO logging.
When LUN IO logging is enabled, the following IO statistics of a LUN
(depending on the storage presentation method selected) will be
displayed. You can press the Reset button to clear all statistics except
outstanding IO to zero.
Category Display
ID Cache 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
Read Cache Hit
The number of cache hits by read commands since the
system was powered on
Merged Write
The number of merged writes (write hits) since the
system was powered on
Dirty Buffer The number of dirty buffers in the cache at present
Clean Buffer The number of clean buffers in the cache at present
Category Display
ID Storage group and LUN 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