Splitting Continuous Access Xp Pairs (Pairsplit-R) - HP xp12000 User Manual

Splitting Continuous Access XP pairs (Pairsplit-r)

Use the Pairsplit-r command to split Continuous Access XP pairs. When the Pairsplit-r command is
selected, the Pairsplit-r pane appears. Use the Pairsplit-r pane to select Pairsplit-r options for the pairs. You
can split a Continuous Access XP pair only after the initial copy operation is complete. For further
information about split Continuous Access XP pairs, see
page 27.
Figure 48 Pairsplit-r pane
• Volume: Port - G-ID - LUN of the selected volume.
NOTE:
volume. For details about external volumes, see the HP StorageWorks External Storage XP user
guide.
• S-VOL Write: Default is Disable.
• Enable: The S-VOL of this Continuous Access XP pair is available to receive read and write I/Os
while the Continuous Access XP pair is split. If you select Enable and you want to resync the pair
later, select S-VOL in the Suspend Kind option to ensure that P-VOL and S-VOL bitmaps are merged
at the MCU. This option is available only when the selected volume is a Continuous Access XP
P-VOL.
• Disable: The S-VOL of this pair accepts I/Os only while the pair is split.
• Suspend Kind: Default is S-VOL.
• S-VOL: The P-VOL accepts all subsequent write I/O operations, and the MCU tracks updates while
the pair is split. Subsequent write I/O operations to the P-VOL are permitted or rejected, depending
on fence level of the pair. This setting is available from the MCU and RCU. Used this setting to keep
the P-VOL online. All Continuous Access XP Asynchronous pairs have this setting.
• P-VOL Failure (available only for Continuous Access XP Synchronous and only when connected to
the MCU): The MCU rejects all write I/O operations to the P-VOL while the pair is split, regardless
of the P-VOL fence-level setting. Use this setting to maintain synchronization of the Continuous
Access XP pair.
• Asynchronous Parameters:
• Suspend Range:
If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external
"Continuous Access XP split types
Continuous Access XP user guide for the XP12000/XP10000
(PSUS)" on
97