HP XP7 Storage - Manual (Page 38)

Item on right side of Monitor
Data field Item on left side of Monitor
Data field Item on right side of Objecc
field Item on left side of Object
field
Read (Total) Cache Hit (%) None Parity Group*
Read (Sequential)
Read (Random)
Read (CFW)
Write (Total)
Write (Sequential)
Write (Random)
Write (CFW)
Read (Total) Cache Hit (%) Base LUN*
Read (Sequential)
Read (Random)
Read (CFW)
Write (Total)
Write (Sequential)
Write (Random)
Write (CFW)
Cache Hit (%) Initial Copy Cnt Ac-J
Cache Hit (%) Initial Copy Cnt Ac-J/Cnt Ac-J Z Entire Storage System
Cache Hit (%) Initial Copy Cnt Ac-J/Cnt Ac-J Z Journal
* Volumes that do not accept I/O from the host, such as pool-VOLs, are not monitored.
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 data drive. The graph contains following information.
•
Cache to Drive
The number of data transfers from the cache memory to data drives.
•
Drive to Cache Sequential
The number of data transfers from data drives to the cache memory in sequential access mode
•
Drive to Cache Random
The number of data transfers from data drives to the cache memory in random access mode
Storing period
Short-Range can be specified.
38 Performance Monitor data