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ShadowImage Operations
Figure 2-15 shows the use of an external volume for the ShadowImage
operation. The mapped external volume is set as the S-VOL of the
ShadowImage pair, and the local storage system internal volume is set as the
P-VOL of the ShadowImage pair. For details on ShadowImage, see the
ShadowImage User's Guide.
The procedure for the operation is as follows:
1. Use Universal Volume Manager to map a volume in the external storage
system as an internal volume of the local storage system.
You can select the emulation type of the mapped volume as you required.
If you select the emulation type for the open system (such as OPEN-V), go
on to the step 2. If you select the emulation type for the mainframe system
(such as 3390-3), go on to the step 3.
2. If you set the emulation type for the open system when you map the
volume, the status of the mapped volume automatically becomes Normal.
However, the volume formatting processing is not executed automatically.
If you need to format the mapped volume, format the volume using the
VLL function.
For the volume formatting operation procedure, see the Virtual LVI/LUN
and Volume Shredder User's Guide.
Go on to the step 4.
3. If you set the emulation type for the mainframe system when you map the
volume, the status of the mapped volume becomes Blockade. Format the
volume using the VLL function. Or if you have mapped the volume for
which the data area has already been zero-formatted on the external
storage system side, perform the Write to Control Blocks operation using
the VLL function to restore the volume.
For the volume formatting operation procedure and the Write to Control
Blocks operation procedure, see the Virtual LVI/LUN and Volume Shredder
User's Guide.
Go on to the step 4.
4. Set the P-VOL and S-VOL of the ShadowImage pair.
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Hitachi Universal Storage Platform V/VM Universal Volume Manager User's Guide
About Universal Volume Manager Operations
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