HP XP P9500 Storage - Manual (Page 4)

Sizing bandwidth ..................................................................................................................34
Five sizing strategies ..........................................................................................................34
Calculating bandwidth ......................................................................................................35
Sizing bandwidth for peak write-workload........................................................................35
Sizing bandwidth for peak rolling average write-workload..................................................37
Latency .......................................................................................................................39
Packet loss ...................................................................................................................39
Planning ports for data transfer ................................................................................................39
Port types..........................................................................................................................40
Determining required number of ports ..................................................................................41
Cable length and switch requirements.......................................................................................41
Supported data path configurations .........................................................................................42
5 Configuration operations...........................................................................44
Configuration workflow ..........................................................................................................44
Defining fibre-channel port attributes ........................................................................................44
Configuring local and remote systems for Cnt Ac-J ......................................................................45
Configuring additional logical paths ........................................................................................48
Specifying number of concurrent initial/resync copies..................................................................49
Registering journal volumes in a journal ....................................................................................50
6 Pair operations.........................................................................................54
Pair operations workflow.........................................................................................................54
Checking pair status...............................................................................................................54
Creating the initial copy .........................................................................................................54
Splitting pairs ........................................................................................................................58
Splitting mirrors .....................................................................................................................59
Creating point-in-time copies ...................................................................................................60
Resynchronizing pairs ............................................................................................................60
Resynchronizing mirrors ..........................................................................................................62
Deleting pairs .......................................................................................................................62
Deleting pairs in a mirror ........................................................................................................64
7 Monitoring the system...............................................................................66
Monitoring pair activity and status............................................................................................66
Pair status definitions..........................................................................................................66
Additional information on pair status...............................................................................69
PSUS types and behaviors..............................................................................................69
PSUE types and behaviors..............................................................................................71
Saving pair information to a text file .........................................................................................72
Monitoring copy operations data, I/O with Usage Monitor..........................................................73
Selecting data to be graphed..............................................................................................74
Manipulating graph, save data...........................................................................................76
Monitoring I/O and hardware performance with Performance Monitor .........................................76
Monitoring journal (mirror) status..............................................................................................77
Remote Web Console mirror status definitions........................................................................77
RAID Manager mirror status definitions.................................................................................78
Monitoring logical path status..................................................................................................78
History of pair operations........................................................................................................79
8 Maintaining the system.............................................................................80
Pair maintenance—changing the pair-split option .......................................................................80
Journal and mirror maintenance...............................................................................................80
Changing options used by journals .....................................................................................81
Changing options used by mirrors .......................................................................................82
Deleting journal volumes from a journal ...............................................................................85
Deleting journals ...............................................................................................................86
4 Contents