HP XP24000/XP20000 Business Copy Software User Guide (T5213-96034, November 2011)
Table Of Contents
- XP24000/XP20000 Business Copy Software User Guide
- Contents
- 1 Overview of HP XP Business Copy Software
- 2 About XP Business Copy Operations
- 3 Interoperability with Other Products and Functions
- 4 Preparing for XP Business Copy Operations
- 5 Using the XP Business Copy GUI
- 6 Performing XP Business Copy Operations
- Configuring the Volume List
- Changing or Deleting the Settings in Preview List
- Setting or Resetting the Reserve Attribute
- Setting Options
- Creating Pairs
- Splitting Pairs
- Suspending Pairs
- Resynchronizing Pairs
- Deleting Pairs
- Viewing Detailed Volume and Pair Information
- Viewing S-VOL Path Information
- Viewing the Number of Pairs and License Information
- Viewing Pair Operation History
- 7 Troubleshooting
- 8 Support and Other Resources
- Glossary
- Index
Figure 7 Backward Pairresync Operations
• The P-VOL remains read-enabled during the quick restore operation only to enable the volume
to be recognized by the host. The data on the P-VOL is not guaranteed until the quick restore
operation is complete and the status changes to PAIR.
• During reverse or quick restore pairresync, you cannot perform paircreate, pairsplit, or
pairresync for any other pair that shares the same P-VOL (pairsplit-S and pairsplit-E are allowed).
Pairresync operation time depends on the pair status, PSUS or PSUE. The relationship between the
pair status and the time required for pairresync operations are as follows:
• Pairresync for PSUS pair
When a normal/quick pairresync operation is performed on a split pair (status = PSUS), the
storage system copies all differential tracks from the P-VOL to the S-VOL. When a reverse or
quick restore pairresync operation is performed on a split pair, the storage system copies all
differential tracks from the S-VOL to the P-VOL. This ensures that the P-VOL and S-VOL are
18 About XP Business Copy Operations