Mapping External Volumes
Tags to map external volumes are:
•The AddVolumeSetting tag: Creates multiple LDEVs in an external volume by specifying the capacity
•The AddVolumeSetting2 tag: Creates one LDEV in an external volume without specifying the capacity
The version number that you write in a spreadsheet declaration differs depending on the tag you use. Write the appropriate version number for the tag you use (for details, see “Available Types and Operation Tags” (page 102)).
You can map external volumes to the local storage system by specifying a spreadsheet that includes one of these tags when you execute the CFLSET command using the CFL Extension.
Write parameters required for mapping external volumes in these tags. Parameters must be written in a hierarchical structure by using the + identifier. Table 19 (page 106) shows the structure and identifier of the parameters that can be set for these tags.
Table 19 Structure and Identifier of Parameters (AddVolumeSetting Tag and AddVolumeSetting2 Tag)
Layer | Identifier | Content | Description |
First layer | None | Information about external | This layer is required. |
|
| volumes and the primary path |
|
Second | +, | Information about alternate paths | Specifies one row for each alternate path. Up to seven |
layer |
|
| rows can be specified. HP recommends that you specify |
|
|
| at least one alternate path. |
Third layer | +,+, | Information about LDEVs | Specifies one row for each LDEV. Up to 2,048 rows can |
|
|
| be specified. If you do not specify the third layer, no |
|
|
| LDEVs will be created. |
AddVolumeSetting Tag
Use the AddVolumeSetting tag to create multiple LDEVs in an external volume by specifying the LDEV capacity. The AddVolumeSetting tag allows you to specify the LDEV capacity in blocks so you can use this tag to create an LDEV with the predetermined capacity (an LDEV for creating a pair, for example).
Table 20 (page 107) shows the parameters that can be set for the AddVolumeSetting tag.
106 Using Spreadsheets for XP External Storage Operations