Splitting pairs, Table 19 – HP StorageWorks XP Remote Web Console Software User Manual
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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.
on page 71 indicates the relationship between
read/write operation from the host to the node volume and the status of L1/L2 pairs.
Table 20 Read/Write to Node Volumes According to Status of L1/L2 Pairs
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
on page 71 indicates the relationship between read/write operation from the host to the leaf
volume and the L2 pair status.
Table 21 Read/Write to Leaf Volume According to L2 Pair Status
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
on page 72) allows you to split existing Business Copy pairs. The
Pairsplit dialog box can also be used to simultaneously create and split new Business Copy pairs.
For information about how to split pairs, see “
Performing Only Pair Splitting
” on page 75. For information
about how to create and split pairs, see “
Performing Pair Creation and Pair Splitting
XP24000 Business Copy Software User's Guide
71