Software Owner's manual

Continuous Access XP user guide for the XP10000/XP12000 91
NOTE: Select the appropriate CU image before creating Continuous Access XP pairs.
Figure 51 Paircreate pane
• Port - Group - LUN:
• P-VOL: Port - Group - LUN of the primary volume (P-VOL), CLPR number, and CLPR name.
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: Secondary volume (S-VOL). Specify each item as follows: Port: 1A-2R, Group: 00-7F, LUN:
00-FF. If you select two or more LUs as P-VOLs in the Volume list, select an S-VOL for the P-VOL of the
lowest LUN. S-VOLs for the remainder of the P-VOLs are automatically assigned according to the
LUN. For example, if you select three LUs on the Volume list and select LUN01 as S-VOL for the first
P-VOL, S-VOLs of following P-VOLs are LUN02 and LUN03.
NOTE: Ensure that all assigned S-VOLs are available. If the automatically assigned S-VOLs are
already used for other operations, modify the S-VOL individually (see ”Modifying parameters and
deleting LUs” on page 88 for instructions).
• RCU: RCU (serial number, CU number, SSID, and port type) for Continuous Access XP pairs being
created. RCUs already registered can be selected from the drop-down list. The RCU must be the same
for all pairs being created during this operation.
• P-VOL Fence level: Conditions under which the MCU rejects write operations to the P-VOL.
• Never: Never fence the operation. When asynchronous pairs are created, Never is set
automatically.
• Data: Fence when the MCU cannot successfully execute an update copy operation for any reason.
• Status: Fence only if the MCU cannot change the S-VOL status to the same status as the P-VOL. This
option is only for synchronous mode.
• Initial Copy Parameters: Initial copy options.
• Initial Copy: Initial copy mode. Entire: Copy all data. No Copy: Do not copy data. The default is
Entire.
• Initial Copy Pace (From 1 to 15): Number of tracks for initial copy. The default is 15.
• Priority (From 1 to 256): Priority (scheduling order) of initial copy operation. The default is 32.
• Difference Management: Select Auto, Cylinder, or Track. The default is Auto. When you select Auto,
either Cylinder or Track is selected depending on basic size of the logical unit (LU).