HP XP Performance Advisor Software - Manual (Page 103)

Description Screen elements
The MBPS threshold value indicates the average MB/s that you
define an individual port can handle over a specified duration. MBPS
HP XP7 Performance Advisor uses this value to verify whether
the average MB/s value on each port is within or beyond the
set threshold.
If the average MB/s on a port exceeds the defined threshold
limit, the status icon appears.
The CHA Util (%) threshold value indicates the average overall
MPs utilization on an installed CHA. HP XP7 Performance CHA Util (%)
Advisor uses this value to verify whether the average overall
utilization of each CHA MP is within or beyond the set threshold.
The default threshold value is 70%.
If the utilization of one CHA MP exceeds the defined threshold
limit, the status icon appears.
NOTE: The CHA Util (%) metric is applicable for the CHA MPs
only on the XP disk arrays.
Cache
If
the cache exceeds the defined threshold limit during the specified threshold duration for a cache metric, the
status
icon
appears
in the Cache category in the XP/XP7Array Healthsection of the Dashboard screen. For example, if the cache
write
pending for the Write Pending (%) metric exceeds the defined threshold even once, the
status
icon appears in the
Cache
category in the XP/XP7Array Health section.
The Cache Usage (%) threshold value indicates the total cache
that you define to be utilized for both the frontend and backend Cache Usage (%)
transactions over the threshold duration. HP XP7 Performance
Advisor uses this value to verify whether the total cache usage
is within or beyond the set threshold limit.
The frontend transactions comprise data transfers between the
cache and the frontend ports. The backend transactions comprise
data transfers between the cache and the LDEVs through the
DKAs.
When the cache usage exceeds the defined threshold limit, the
status icon appears.
The Write pending metric comprises the number of writes that
are pending to be written from the cache to the LDEVs. The
default threshold value is 28%. Write Pending (%)
The Write Pending (%) threshold value indicates the total number
of write operations that you define can be pending with the
cache over the threshold duration. HP XP7 Performance Advisor
uses this value to verify whether the total write pending
operations are within or beyond the set threshold limit.
When the write pending exceeds the defined threshold limit,
the status icon appears.
The utilization of the sidefile shown as a percentage value. Side File Usage %
Backend
If
any of the RAID groups or the DKA MPs usage (applicable only for the XP disk arrays) exceeds the defined threshold limit
during
the specified threshold duration for a backend metric, the
status
icon appears in the Backend category in the XP/
XP7Array
Health section. For example, if the usage of a RAID group for the RG Seq Reads (IOPS) metric exceeds the
defined
threshold even once, the
status
icon appears.
The RG seq frontend reads (IOPS) threshold value indicates the
average sequential backend read tracks that you define an RG Seq Reads (IOPS)
individual RAID group can manage over the threshold duration.
Dashboard threshold metrics 103