HP StorageWorks XP12000 User Manual page 4

Using external LUs for Business Copy XP operations ................................................................ 52
Using external LUs for Snapshot XP operations ....................................................................... 53
3 Managing cache with external storage ............................................... 55
Guidelines for using cache with external storage ........................................................................... 55
Determining, setting, or changing the external LU cache mode ........................................................ 56
Determining if the cache mode is disabled ............................................................................ 56
Changing the cache mode .................................................................................................. 57
Collecting device information ........................................................................................ 57
Deleting and remapping the external LU ......................................................................... 60
Partitioning cache for external storage ......................................................................................... 61
For example, Company A uses: ............................................................................................ 61
In another example, Company B uses the following storage tiers: .............................................. 61
To partition cache for external storage: ................................................................................. 61
Determining the number and size of needed partitions ................................................................... 62
Creating cache partitions ........................................................................................................... 62
Changing storage system modes ................................................................................................. 65
4 External Storage XP panes ................................................................ 67
LU Operation pane ................................................................................................................... 67
Device tree ........................................................................................................................ 69
Device list ......................................................................................................................... 70
WWN tree ....................................................................................................................... 73
WWN list ......................................................................................................................... 74
Port tree ............................................................................................................................ 76
Port list .............................................................................................................................. 77
Filter button ....................................................................................................................... 79
Preset list (LU Operation pane) ............................................................................................. 80
Port Operation pane ................................................................................................................. 80
Port Operation tree ............................................................................................................. 82
Port Operation list .............................................................................................................. 83
Preset list (Port Operation pane) ........................................................................................... 84
5 Configuring external LUs ................................................................... 85
Overview of configuring external LUs ........................................................................................... 85
Setting an external array's port ................................................................................................... 86
Setting a local array's port attributes ........................................................................................... 86
Discovering and Mapping LUs .................................................................................................... 87
Mapping external LUs individually (Add LU) ........................................................................... 88
Select Paths pane ........................................................................................................ 92
Mapping multiple external LUs at (Add LU (Auto)) ................................................................... 97
Select LDEV window ................................................................................................... 101
Displaying detailed information stored in VMA (VMA information) .......................................... 103
Setting alternate paths for external LUs ...................................................................................... 105
Defining alternate paths .................................................................................................... 108
Changing a defined alternate path priority .......................................................................... 109
Canceling alternate path definitions .................................................................................... 110
Changing alternate paths .................................................................................................. 111
Replacing All the Alternate Paths with Newly-added Alternate Paths ........................................ 111
Adding alternate paths by selecting multiple external LUs (Add Paths) ............................................ 113
Deleting alternate paths by selecting multiple external LUs (Delete Paths) ........................................ 115
Checking an external LU's status (LDEV Information) .................................................................... 117
Obtaining information about external LUs ............................................................................ 117
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