Continuous Access Xp Initial Copy And Pair Options Of The Paircreate Pane; Fence Level (Continuous Access Xp Synchronous Only); Pair Settings Parameter List (Paircreate) - HP xp12000 User Manual

10.In the Continuous Access XP main pane, verify that new Continuous Access XP pairs are displayed
correctly (COPY status) in the Volume list. To monitor the status of new pairs, click Refresh to update
information in the Volume list, or use the Pairdisplay pane (see
status for LUs and LDEVs
The Paircreate operation is rejected if the P-VOL is in the correction access or correction copy state. If
this occurs, wait for the volume state to change and repeat this procedure. If the status is not displayed
correctly, ensure that the correct CU image is selected.
CAUTION: If a timeout error occurs when the Use Time-Saving Mode option is selected, access the
Continuous Access XP main pane, and confirm the volumes on which the paircreate operation could not be
performed. Deselect the Use Time-Saving Mode option for failed volumes, and retry the paircreate
operation.
After the Paircreate pane closes, the list changes to the Pair Settings Parameter list (Paircreate).
Figure 47

Pair Settings Parameter list (Paircreate)

• Port, Group, and LUN of the LU in the connected disk array.
• S/N and SSID of the RCU (MCU if you are connected to the RCU).
• Port, Group, and LUN of the LU to be the S-VOL.
• Type: Synchronous or Asynchronous of the pair created.
Mode: Entire: Copy all cylinders. No Copy: Do not copy.
•
• Fence: Conditions under which the MCU rejects write operations to the P-VOL: Never, Data, or Status.
• Pace: Number of tracks (1-15) for initial copy.
• Priority: Priority (scheduling order) of initial copy operations.
• Diff: In the measurement of the Cylinder or the Track, Continuous Access XP manages differentials
among data.
• CTG: Consistency group used for pair created (Asynchronous pairs only).
• ErrLvl: Error level, Group or LU. When a failure occurs, pairs in the same group or in an LU are
suspended (Asynchronous pairs only).

Continuous Access XP initial copy and pair options of the Paircreate pane

Continuous Access XP initial copy and pair options specify the fence level, initial copy parameters, and
asynchronous parameters. Initial copy and pair options are selected on the Paircreate pane. While the
initial copy operation is in progress, the initial copy options cannot be changed unless you delete
(pairsplit-S) and then restart (paircreate) the pair. After the initial copy operation is complete, you can only
change Continuous Access XP pair options (Fence Level and Error Level).

Fence Level (Continuous Access XP Synchronous only)

Fence Level: Conditions under which the MCU rejects write operations to the P-VOL, which is known as
"fencing." This option is very important for disaster recovery planning (see
fence-level setting" on page 109).
• Never: The P-VOL is never fenced. If the Continuous Access XP volume pair is split or suspended, write
operations to the P-VOL are accepted.
• Data: The P-VOL is fenced when the MCU cannot successfully execute an update copy operation for
any reason.
• Status: The P-VOL is fenced only if the MCU cannot change the S-VOL status to suspended when an
update copy operation fails. If the MCU changes the S-VOL status to suspended, subsequent write
(Pairdisplay)" on page 91) to monitor detailed status of each pair.
Continuous Access XP user guide for the XP12000/XP10000
"Viewing Continuous Access XP pair
"Considering the P-VOL
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