HP StorageWorks P9000 Performance Advisor Software v5.3 User and Troubleshooting Guide (T1789-96322, August 2011)

DescriptionScreen elements
The LUN associated with the given LDEV.Target LUN
The volume group identification name if the device is
associated with a volume group. P9000 Performance
Advisor 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 or P9000 disk array.
• The following metrics are not applicable for the XP or the P9000 continuous access journal pool
LDEVs. NA is displayed:
• Response Time Metric category: Maximum Write Response and Average Write Response
• Frontend IO Metric category: Random Write Cache Hits, Random Writes, Sequential Write
Cache Hits, and Sequential Writes
• Frontend MB Metric category: Random MB Writes and Sequential MB Writes
Viewing comparison charts for LDEVs
You can compare the performance of an LDEV 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
P9000 Performance Advisor provides details on whether a particular LDEV is configured as one of
the following for P9000 Business Copy or P9000 Continuous Access Synchronous:
• PVOL (primary volume)
• SVOL (secondary volume)
It also provides the current replication pair status between the PVOLs and SVOLs.
Viewing XP and P9000 disk array components248