HP StorageWorks P9000 User Manual page 138

This dialog box lets you create a pair. See
Item
M-VOL
R-VOL
RCU
M-VOL Fence Level
Initial Copy
Copy Pace
Priority
Difference Management
CFW Data
DFW to R-VOL
Time Stamp
138 Continuous Access Synchronous Z GUI reference
"Create pairs" (page 56)
Description
Shows the M-VOL LDKC number, CU number, LDEV number, and CLPR number and name.
Where the R-VOL is defined: device ID.
Where the remote system is defined.
The serial number, LDKC number, the CU number, SSID, path type.
Where the option is defined for rejecting write operations to the M-VOL.
Where whether to copy the M-VOL during the initial copy is defined.
Where maximum number of tracks to be copied is defined: 3 or 15.
Where the order is defined for the current pair to be created. Options are from 1 to 256.
For the details of the scheduling order of the initial copy for which the Priority is set, see
"Priority set for initial copy operations and scheduling order" (page
Where the method is defined for managing differential data. Options are Auto, Cylinder,
Track.
Specifies whether the CFW data will be copied to the R-VOL.
Specifies whether the main system will suspend the pair if the remote system cannot execute
DFW (DASD fast write) to the R-VOL.
DFW required indicates that the pair will be suspended when DFW data to the R-VOL is
blocked.
DFW not required indicates that the pair will not be suspended when DFW data to the
R-VOL is blocked.
The interaction of the DFW required setting and the M-VOL fence level setting can cause a
host application to fail with a permanent I/O error when attempting to update an M-VOL.
Keep track of which pairs have the DFW required setting, and make sure that DFW to the
R-VOL is not blocked.
If a Continuous Access Synchronous Z pair is established using PPRC commands, the DFW
to R-VOL option is set to the DFW not required setting.
Specifies whether or not the host I/O timestamp is transferred from M VOL to R VOL.
for complete information.
35).