HP StorageWorks XP Performance Advisor Software v4.6 User and Troubleshooting Guide (T1789-96094, June 2010)

DescriptionScreen elements
The sequential read utilization percentage for a RAID
group.
% RGUtil Seq Read
The sequential write utilization percentage for a RAID
group.
% RGUtil SeqWrite
The sequential write parity utilization percentage for
a RAID group.
% RGUtil Seq Write Parity
Viewing port summary
To view the summary of overall utilization of ports for an XP array, click Port Summary in the Resource
selection tree for the XP array. This feature totals the LDEV IO/s, LDEV MB/s, cache fast write, disk
fast write, cache bypass, backend transfer values, for all of the LDEVs on a given RAID group or port,
When you request a port summary report, the total IO/s displayed may not be equal to the sum of
IO/s across each of the ports. This can occur if multiple paths to an LDEV exist. The port IO summary
indicates the IO ceiling values across the ports. It does not indicate the absolute or accurate IO/s rate
across the ports. Click a CHP Port ID to view the associated performance graphs in the Chart Work
Area. For more information, see “Plotting charts” on page 213.
Click Refresh when you want to view the updated port summary.
Figure 19 Port summary
.
DescriptionScreen elements
Displays the port name for the Client Host Interface
Processor (CHP) port. Provides the option to view in-
formation associated with a particular port or with all
ports.
CHP Port ID
Displays the SLPR with which the RAID group is associ-
ated.
SLPR
Viewing XP arrays resources190