Assigning secondary volumes to snapshot data after creating new
Thin Image pairs
You can assign an S-VOL to snapshot data after creating a new Thin Image
pair.
Note: If the amount of snapshot data in selected P-VOLs or the total number
of pairs in selected snapshot groups exceeds 37,768, an error message
appears when attempting to perform pair tasks.
Before you begin
• You must have the Storage Administrator (Local Copy) role.
Procedure
1. In the Explorer pane, click Storage Systems, expand the storage
system tree, expand Replication, and then click Local Replication.
2. In the Local Replication window, select a P-VOL in the TI Root
Volumes tab or a snapshot group in the Snapshot Groups tab.
3. Click Operate TI Pairs.
4. In the TI Pairs window, click Create TI Pairs.
You can specify P-VOLs in Device Manager - Storage Navigator until the
total number of snapshots or clones reaches 32,768. In addition, you can
specify snapshot groups until the total number of pairs reaches 32,768.
5. In Use Primary Volumes of Thin Image Pairs, or Create Pairs using
Volumes as Root Volumes, select Yes or No.
6. In Select By, select LUN to create a pair by specifying LUN. Select
LDEV to create a pair without specifying LUN.
7. From the Available Primary Volumes table, select the LDEV you want
to assign as the P-VOL.
Note: The nondisruptive migration volumes do not appear in the
Available Primary Volumes table.
8. In Cascade, select Enable to create a cascaded pair.
9. In Pair Type, select Snapshot to create a pair with the snapshot
attribute. Select Clone to create a cloned pair. If you selected No for
Create Pairs using Volumes as Root Volumes, go to step 13.
10. Click Select Pool.
11. In the Select Pool window, select a pool from the Available Pools
table.
12. Click OK.
13. For Snapshot Group, select either Create New to assign the pair to a
new snapshot group, or Use Existing to assign the pair to an existing
snapshot group. When you create a Thin Image pair, you must assign it
to a snapshot group.
Managing Thin Image Pairs 149
Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series
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