HP XP Continuous Access Software User Manual
Page 82
82
Continuous Access XP for the XP1024/XP128
• 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 ”
” on page 79 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 T
RACK
is selected depending on basic size of the logical unit (LU).
•
Asynchronous Parameters: Only for Asynchronous pairs.
• CT Group: Consistency group already registered.
NOTE:
Only Continuous Access XP Asynchronous pairs belonging to the same CLPR can be
allocated to one consistency group. For more information about CLPRs, see the HP StorageWorks
XP Disk/Cache Partition user guide.
• Error Level: Error level for Continuous Access XP Async pairs, Group, or LU.
•
Cancel button: Cancels settings made, and closes the Paircreate pane.
•
Set button: Sets parameters, and closes the Paircreate pane.
When you create two or more pairs at one time, initial copy options are the same for all pairs. You can
modify these initial copy options for individual pairs as needed. For instructions, see ”
” on page 79. For further information about initial copy options, see
Continuous Access XP initial copy and pair options of the Paircreate pane
The Use Time-Saving Mode option executes the specified paircreate operations quickly (that is, requests
for multiple pairs are entered simultaneously).
1.
Ensure that volumes that will be Continuous Access XP S-VOLs are offline from all hosts.