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9 changing display of graphs, 10 performance control operations, 11 estimating cache size – HP XP RAID Manager Software User Manual

Page 4: 12 managing resident cache

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Usage rate of a data recovery and reconstruction processor.........................................................35
Usage rate of cache memory...................................................................................................35
Write pending statistics...........................................................................................................35
Access paths usage statistics....................................................................................................36
Throughput of storage system...................................................................................................37
Size of data transferred...........................................................................................................38
Response times.......................................................................................................................39
Cache hit rates.......................................................................................................................40
Back-end performance.............................................................................................................42
Hard disk drive usage statistics.................................................................................................42
Hard disk drive access rates.....................................................................................................43
Business Copy usage statistics..................................................................................................43
Detailed information of resources on top 20 usage rates..............................................................44

9 Changing display of graphs......................................................................45

Graph operation....................................................................................................................45
Changing displayed items.......................................................................................................45
Changing a display period......................................................................................................45
Adding a new graph .............................................................................................................45
Deleting graph panel..............................................................................................................46

10 Performance Control operations................................................................47

Overview of Performance Control operations..............................................................................47
If one-to-one connections link HBAs and ports............................................................................47
If many-to-many connections link HBAs and ports........................................................................49
Port tab operations..................................................................................................................53

Analyzing traffic statistics....................................................................................................54
Setting priority for ports on the storage system.......................................................................54
Setting upper-limit values to traffic at non-prioritized ports........................................................55
Setting a threshold ............................................................................................................56

WWN tab operations.............................................................................................................57

Monitoring all traffic between HBAs and ports.......................................................................57

Excluding traffic between a host bus adapter and a port from the monitoring target...............59

Analyzing traffic statistics....................................................................................................59
Setting priority for host bus adapters....................................................................................60
Setting upper-limit values for non-prioritized WWNs...............................................................61
Setting a threshold.............................................................................................................62
Changing the PFC name of a host bus adapter......................................................................63
Registering a replacement host bus adapter...........................................................................64
Grouping host bus adapters................................................................................................65

Containing multiple HBAs in an PFC group.......................................................................65
Deleting an HBA from an PFC group...............................................................................65
Switching priority of an PFC group..................................................................................66
Setting an upper-limit value to HBAs in an PFC group........................................................66
Renaming an PFC group................................................................................................67
Deleting an PFC group...................................................................................................68

11 Estimating cache size...............................................................................69

About cache size....................................................................................................................69
Calculating cache size for open systems....................................................................................70
Calculating cache size for mainframe systems.............................................................................73
Cache Residency cache areas..................................................................................................73
Cache Residency system specifications......................................................................................74

12 Managing resident cache........................................................................75

Cache Residency rules, restrictions, and guidelines......................................................................75
Launching Cache Residency.....................................................................................................77

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