System option modes .........................................................................................................33
4 Planning the data path..............................................................................35
Data path design workflow .....................................................................................................35
Sizing bandwidth ..................................................................................................................35
Five sizing strategies ..........................................................................................................35
Calculating bandwidth ......................................................................................................36
Sizing bandwidth for peak write-workload........................................................................36
Sizing bandwidth for peak rolling average write-workload..................................................37
Latency .......................................................................................................................38
Packet loss ...................................................................................................................38
Planning ports for data transfer ................................................................................................39
Determining required number of ports ..................................................................................39
On setting up ports ...........................................................................................................40
Distances supported for Fibre Channel type, number of switches ..................................................40
Supported data path configurations .........................................................................................41
5 Configuration operations...........................................................................43
Configuration workflow ..........................................................................................................43
Define Fibre Channel port attributes .........................................................................................43
Configure storage systems for Continuous Access Journal, define logical paths ...............................45
Configure additional logical paths ...........................................................................................47
Specify number of volumes for initial copy, resync ......................................................................48
Register journal volumes in a journal ........................................................................................50
6 Pair operations.........................................................................................53
Pair operations workflow.........................................................................................................53
Check pair status....................................................................................................................53
Create the initial copy ............................................................................................................53
Split a pair ...........................................................................................................................57
Split a mirror .........................................................................................................................59
Create a point-in-time copy .....................................................................................................59
Restore a pair .......................................................................................................................60
Resynchronize a mirror ...........................................................................................................62
Delete a pair ........................................................................................................................63
Delete pair volumes from a mirror ............................................................................................65
7 Monitoring the system...............................................................................67
Monitor pair activity and status................................................................................................67
Pair status definitions..........................................................................................................67
PSUS types and behaviors..............................................................................................71
PSUE types and behaviors..............................................................................................72
Filtering Information in the List in the Pair Operation window...............................................73
Saving pair status information into a text file.....................................................................74
Monitor copy operations data, I/O .....................................................................................75
Select data to be graphed..............................................................................................76
Manipulate graph, save data..........................................................................................78
Monitor journal (mirror) status...................................................................................................78
Mirror status definitions.......................................................................................................78
Monitor logical path status.......................................................................................................79
History of operations for data volume pairs...........................................................................81
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