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
To split an L2 pair, you must first split the L1 pair (L1 status = PSUS). The reverse and quick restore
pairresync operations cannot be used for L2 pairs. Table 31 (page 71) shows the relationship
between the L1 pair status and the availability of XP Business Copy pair operations on the associated
L2 pairs. (CMD RJT = command rejected.)
Table 31 Relationship between L1 Pair Status and L2 Pair Operations
L2 Pair OperationsL1 Pair Status
Pairsplit-SPairsplit-EPairresync
1
PairsplitPaircreate
YesYesYesNo (CMD RJT)YesCOPY(PD)
YesYesYesNo (CMD RJT)YesPAIR
YesYesYesNo (CMD RJT)YesCOPY(SP)
YesYesYesNo (CMD RJT)No (CMD RJT)PSUS(SP)
YesYesYesYes
2
YesPSUS
YesYesYesNo (CMD RJT)YesCOPY(RS)
YesYesYesNo (CMD RJT)YesCOPY(RS-R)
YesYesYesNo (CMD RJT)YesPSUE
1
You can only resynchronize L2 pairs in Normal Copy or Quick Resync mode. Note that you cannot perform backward
resynchronization (that is, Reverse Copy or Quick Restore).
2
To split L2 pairs, you need to change the status of the L1 pair to PSUS at first.
Table 32 (page 71) shows the relationship between the L2 pair status and the availability of pair
operations on the associated L1 pairs. (CMD RJT = command rejected.) If you delete an L1 pair
that contains an L2 pair, the L2 pair becomes the L1 pair.
Table 32 Relationship between L2 Pair Status and L1 Pair Operations
L1 Pair OperationsL2 Pair Status
Pairsplit-SPairsplit-EPairresyncPairsplitPaircreate
YesYesYesYesYes
1, 2
COPY(PD)
YesYesYesYesYes
1, 2
PAIR
YesYesNo (CMD RJT)No (CMD RJT)
2
No (CMD RJT)
2
COPY(SP)
YesYesNo (CMD RJT)No (CMD RJT)
2
No (CMD RJT)
2
PSUS(SP)
YesYesYesYesYes
1, 2
PSUS
YesYesYesYesYes
1, 2
COPY(RS)
———No (CMD RJT)No (CMD RJT)
2
COPY(RS-R)
YesYesYesYesYes
1, 2
PSUE
1
MU# of L2 pair must be 1 or 2.
2
Not displayed by Remote Web Console.
The read/write operation to each volume (root, node or leaf volume) from the host is enabled or
disabled depending on the status of L1/L2 pairs. Table 33 (page 72) indicates the relationship
between read/write operation from the host to the node volume and the status of L1/L2 pairs.
Creating Pairs 71