HP XP P9000 Performance Advisor Software v5.5 User Guide (T1789-96337, Februrary 2013)

DescriptionMetricsCategory
NOTE: In a 100% ThP environment,
the Dashboard Backend metrics show
zero values for an XP or a P9000 disk
array. This is because, the I/O per
second data and the MB/second data
throughput is on the V-Vols rather than
the pool LDEVs in a RAID group. To
view backend transfers on such RAID
groups, refer to the corresponding
combined backend transfer values.
If you want to view the ThP pool RAID
group utilization for a RAID group, go
to Charts > THP Pool main category,
select a RAID group and plot the RAID
group utilization graph (RG Util (%)
metric.
Avg MP Blade Util (%): Average
utilization of the individual installed MP
blades.
Avg MP Blade Util (%)MP Blade
IMPORTANT: Combined backend transfers:
In Thin Provisioned environments, the overall backend transfers at the RAID group level are reported
using combined backend transfer metric. For a Thin Provisioned V-Vol where the ThP pool is
associated with multiple RAID groups, the backend transfers are not tracked to the corresponding
RAID group level. The backend transfers contributed by all V-Vols in a ThP pool are combined and
reported as combined backend transfers for each participating RAID group. It implies that the
combined backend transfer is shared among each of the participating RAID groups.
The following table lists the details displayed in the Statistics section.
Additional detailsStatistics section
Statistics for Frontend category
• The port ID.
The port type, such as Fibre, Ficon, Escon, or FCoE
(applicable only for P9000 disk arrays) is also displayed
beside the port ID.
• For an XP disk array, the CHA and MPs associated with
a particular port.
For a P9000 disk array, only the CHA associated with
a particular port.
Statistics for Cache category
• The total Cache size.
• The side file usage.
Statistics for Backend category
• The RAID group number.
• The associated DKA pair for a particular RAID group.
• The associated ThP pool IDs, if they are configured in
an XP or a P9000 disk array. If not configured,  (dash)
appears. NA appears for the XP disk arrays prior to
the XP24000 Disk Array.
• The corresponding RAID level for a particular RAID
group.
The MP blade ID, includes the cluster # and the blade
location for the MP blade.
Statistics for MP Blade category
NOTE: Applicable only for the P9000 disk arrays.
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