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CAUTION:
The L2 paircreate operation overwrites all existing data on the L2 S-VOLs. You are responsible for
backing up the data on the S-VOLs before creating BC pairs.
Creating L2 pairs
1. Ensure that the L2 S-VOLs are unmounted.
2. In the BC main screen, select the L1 pairs to which you want to add the L2 pairs, right-click the
selected L1 pairs, and select Paircreate. The Paircreate window appears.
3. InthePaircreatewindow,selecttheL1nodevolume,selecttheMUnumber(1 or 2)intheSelect MU
list, and select the S-VOL for the new L2 pair (MU=0 was already used as the L1 S-VOL).
4. Click Cascade to add the L2 pair to the list of pairs.
5. Repeat until all L2 pairs are displayed. Click Change to replace an S-VOL, click Cascade to add an
S-VOL, and use the Delete command to remove pairs.
6. When the Paircreate window displays all new pairs, click OK to reflect all pairs (settings) in the list to
thePresetVolumelistontheBCmainscreen.
7. In the BC main screen, click Apply to create the pairs.
When the initial copy operations start, the BC main screen shows new pairs with COPY(PD) status
and progress (%) of the initial copy operations.
8. Click Refresh () to monitor the progress of the initial copy operations.
Splitting BC pairs (Pairsplit)
The Pairsplit window displays volume and pair information for volumes and/or pairs selected on the BC
main screen. Use the Pairsplit window to split existing BC pairs, or simultaneously create and split new
BC pairs (see Creating and splitting pairs ). To open the Pairsplit window, select volumes or pairs in the
Volume list on the BC main screen, right-click the selected volumes or pairs, and click Pairsplit.
Figure 35 Pairsplit window
The Pairsplit window consists of the following components:
• Pairsplit Volume List
• Window options
•SelectS-Volbox
•Buttons
• Splitting pairs
• Creating and splitting pairs
Pairsplit Volume List
This list in the upper half of the Pairsplit window displays the following information about the P-VOL
and S-VOL of the pair you want to split:
• Port: Port ID (cluster and channel number) of the P-VOL
• Group (G-ID):HostgroupIDoftheP-VOL
• (Path) LUN:CU:LDEVoftheP-VOL
Business Copy XP user guide
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