HP XP P9000 Performance Advisor Software - Manual (Page 128)

• The average sequential backend write tracks on individual RAID groups
• The average utilization of a RAID group
• The average utilization of an ACP/DKA pair
• The average utilization of an MP blade
IMPORTANT:
• The average CHA MPs and the DKA MPs utilization metrics are applicable only for the XP
disk arrays.
• The average MP blade utilization metrics is applicable only for the P9000 disk arrays.
2. During the specified threshold duration, if the usage of any component crosses the defined
threshold limit for any metric in a particular category, the appropriate status icons appear in the
Frontend, Cache, Backend, or the MP Blade category in the XP/P9000 Array Health section and
beside the respective components in the Statistics section. The average usage summary of indi-
vidual components is also displayed in the Statistics section.
If the threshold limit is defined for at least one metric in a particular category, the respective Statistics
section displays the average usage data of components for all the metrics in that category. However,
the overall usage status of an XP or a P9000 disk array in that category is based on the usage of
components for only those metrics whose threshold limits are configured on the Threshold Setting
screen.
For example, assume that the threshold limit is set only for the RG Seq Reads (IOPS) (Avg Seq Reads)
metric in the Backend category. So, the status icon displayed in the XP/P9000 Array Health section
in the Backend category is based on whether the usage data of individual components for RG Seq
Reads (IOPS) (Avg Seq Reads) metric is within or beyond the set threshold limit. However, when you
click the status icon in the Backend category, the average usage data of components displayed in
the Statistics section includes data for the following backend metrics in addition to the RG Seq Reads
(IOPS) (Avg Seq Reads) metric:
• RG NonSeq Reads (IOPS) (Avg NonSeq Reads)
• RG Writes (IOPS) (Avg Writes)
• RG Util (%)
• Avg DKA Pair Util (%)
Component levels in the Statistics section
When you click a status icon in the Frontend, Cache, Backend, or the MP Blade category, the related
component usage data appears in the Statistics section.
Description Component levels
Indicates that the usage of a component corresponding to a particular metric has
crossed the threshold limit during the specified threshold duration. In such cases,
the status icon also appears as
for the appropriate category in the XP/P9000
Array Health section.
Components with a red
status icon beside them
(
)
Monitoring performance of XP and P9000 disk arrays 128