Figure 49 pairsplit-r pane, 49 pairsplit-r pane – HP XP Continuous Access Software User Manual
Page 86
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Continuous Access XP for the XP1024/XP128
information about split Continuous Access XP pairs, see ”
Continuous Access XP split types (PSUS)
Figure 49
Pairsplit-r pane
•
Volume: Port - Host group - LUN of the selected volume.
NOTE:
If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external
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:
Group: The MCU and RCU splits all other Continuous Access XP Async pairs in the same
consistency group as the specified pairs. This option is available only when one pair is selected.
LU: The MCU and RCU splits only the specified Continuous Access XP Async pairs (even if error
level of the pair is group).