HP P9000 Performance for Open and Mainframe Systems User Guide (AV400-96395, October 2011)

Item on right side of Monitor
Data: field
Item on left side of Monitor
Data: field
Item on right side of Object:
field
Item on left side of Object:
field
Write (Sequential)
Write (Random)
Write (CFW)
Read (Total)Cache Hit (%)NoneParity Group
Read (Sequential)
Read (Random)
Read (CFW)
Write (Total)
Write (Sequential)
Write (Random)
Write (CFW)
Read (Total)Cache Hit (%)NoneLUN
Read (Sequential)
Read (Random)
Read (CFW)
Write (Total)
Write (Sequential)
Write (Random)
Write (CFW)
Back-end performance
Function
The back-end transfer can be monitored. The back-end transfer is the number of data transfers
between the cache memory and the hard disk drive. The graph contains following information.
• Cache to Drive
The number of data transfers from the cache memory to hard disk drives.
• Drive to Cache Sequential
The number of data transfers from hard disk drives to the cache memory in sequential access
mode
• Drive to Cache Random
The number of data transfers from hard disk drives to the cache memory in random access
mode
Storing period
Short-Range can be specified.
Back-end performance 33