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

DescriptionScreen elements
The sequential frontend reads throughput in MB/s for
the LDEV.
Sequential MB Reads – Frontend
The sequential frontend writes throughput in MB/s for
the LDEV.
Sequential MB Writes – Frontend
The sequential frontend write cache hit values in per
second.
Sequential Write Cache Hits – Frontend
The identification number of the subsystem.SS ID
The SLPR group ID.SLPR
The LUN associated with the given LDEV.Target LUN
The volume group identification name if the device is
associated with a volume group. XP Performance Ad-
visor reports volume groups from LVM (an HP brand)
and VXVM (a Veritas brand).
Vol. Group
NOTE:
The E-LDEV, Ext-LUN, E-Port(s), E-Seq, Jnl Group, and Vol. Group are available for selection only if
they are configured in the selected XP array.
Viewing comparison charts for LDEVs
You can compare an LDEV's performance for the following metrics:
• Random read hits vs. Random read miss
• Random read vs. Random write
• Sequential read hits vs. Sequential read miss
• Read hits vs. Read miss
• Read vs. Write
• Sequential Read vs. Sequential Write
• Random vs. Sequential
To do the comparison:
1. Click an LDEV ID in the LDEV table.
The LDEV Profile dialog appears and displays the Chart Profile list.
2. Select the above combination from the Chart Profile list and click OK.
The comparison chart is displayed in the Chart Work Area.
Viewing replication data for LDEVs
XP Performance Advisor provides details on whether a particular LDEV is configured as one of the
following for BC or CA:
• PVOL (primary volume)
• SVOL (secondary volume)
Viewing XP arrays resources200