HP StorageWorks XP24000 Business Copy Software User's Guide (T5213 - 96001, June 2007)

Table 19 Relationship between L2 Pair Status and L1 Pair Operations
L2 Pair Status
L1 Pair Operations
Paircreate
Pairsplit
Pairresync
Pairsplit-E Pairsplit-S
COPY(PD) OK*
1
*
2
OK OK OK OK
PAIR
OK*
1
*
2
OK OK OK OK
COPY(SP)
NO (CMD RJT) *
2
NO (CMD RJT) *
2
NO (CMD RJT)
OK OK
PSUS(SP)
NO (CMD RJT) *
2
NO (CMD RJT) *
2
NO (CMD RJT)
OK OK
PSUS OK*
1
*
2
OK OK OK OK
COPY(RS) OK*
1
*
2
OK OK OK OK
COPY(RS-R)
NO (CMD RJT) *
2
NO (CMD RJT)
— — —
PSUE OK*
1
*
2
OK OK OK OK
*1 MU# of L2 pair must be 1 or 2.
*2 Not displayed by the 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 20 on page 71 indicates the relationship between
read/write operationfrom the host to thenodevolumeand thestatusofL1/L2 pairs.
Table20Read/WritetoNodeVolumesAccordingtoStatusofL1/L2Pairs
L2 Pair Status
L1 Pair Status COPY(PD)
PAIR
COPY(SP) PSUS(SP) PSUS COPY(RS) PSUE
COPY(PD)
Read
Only
Read
Only
Read
Only
Read
Only
Read
Only
Read
Only
Read
Only
PAIR
COPY(SP)
PSUS(SP)
Read/
Write
Read/
Write
Read/
Write
Read/
Write
Read/
Write
Read/
Write
Read/
Write
PSUS
COPY(RS)
Read
Only
Read
Only
Read
Only
Read
Only
Read
Only
Read
Only
Read
Only
COPY(RS-R)
PSUE
Table 21 on page 71 indicates the relationship between read/write operation from the host to the leaf
volume and the L2 pair status.
Table21Read/WritetoLeafVolumeAccordingtoL2PairStatus
L2 Pair Status
COPY(PD)
PAIR
COPY(SP) PSUS(SP) PSUS COPY(RS) PSUE
Read Only Read Only Read Only Read/Write Read/Write Read Only Read Only
Splitting Pairs
The Pairsplit dialog box (see Figure 32 on page 72) allows you to split existing Business Copy pairs. The
Pairsplit dialog box c
an also be used to simultaneously create and split new Business Copy pairs.
For information abou
thow to splitpairs,see “Performing Only Pair Splitting” on page 75. For information
about how to create an
d split pairs, see “Performing Pair Creation and Pair Splitting” on page 76. In
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