HP StorageWorks XP24000/XP20000 Business Copy Software User Guide (T5213-96034, May 2011)

Table 32 Read/Write to Node Volumes According to Status of L1/L2 Pairs
L2 Pair StatusL1 Pair
Status
PSUECOPY(RS)PSUSPSUS(SP)COPY(SP)PAIRCOPY(PD)
Read OnlyRead OnlyRead OnlyRead OnlyRead OnlyRead OnlyRead OnlyCOPY(PD)
PAIR
COPY(SP)
Read/WriteRead/WriteRead/WriteRead/WriteRead/WriteRead/WriteRead/WritePSUS(SP)
PSUS
Read OnlyRead OnlyRead OnlyRead OnlyRead OnlyRead OnlyRead OnlyCOPY(RS)
COPY(RS-R)
PSUE
Table 33 (page 74) indicates the relationship between read/write operation from the host to the
leaf volume and the L2 pair status.
Table 33 Read/Write to Leaf Volume According to L2 Pair Status
L2 Pair Status
PSUECOPY(RS)PSUSPSUS(SP)COPY(SP)PAIRCOPY(PD)
Read OnlyRead OnlyRead/WriteRead/WriteRead OnlyRead OnlyRead Only
Splitting Pairs
The Pairsplit dialog box (see Figure 33 (page 75)) allows you to split existing XP Business Copy
pairs. The Pairsplit dialog box can also be used to simultaneously create and split new XP Business
Copy pairs.
For information about how to split pairs, see “Performing Only Pair Splitting” (page 78). For
information about how to create and split pairs, see “Performing Pair Creation and Pair Splitting”
(page 79). In addition, you can split multiple pairs at the same specified time by using RAID
Manager. For details, see “Performing At-Time Split Operation (Multiple Pair Splitting)” (page 80).
74 Performing XP Business Copy Operations