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Chapter 3 Replication Management
34
(x) Copy Control State
The control status in copying is displayed.
For more information, refer to 2.4 “Copy Control State”.
Display Description
Foreground Copy Indicates the copy state in the synchronous or semi-synchronous mode.
Background Copy Indicates the asynchronous copy state by difference management.
Freeze Indicates that the data replication function is frozen.
Suspend Indicates that copy operation is suspended.
Abnormal Suspend Indicates that copy is forcibly suspended in the disk array due to a copy fault.
(xi) Copy Mode
The copy control state in the synchronous state during Replicate/Restore is displayed.
Display Description
Synchronous
This mode completes copying to RV within the processing time of the command
for writing to MV.
Semi-synchronous
This mode stops the command for writing to MV and immediately performs
copying to RV.
Background Copy
This mode performs copying to RV asynchronously after stopping the command
for writing to MV.
(xii) RV Mode
RV access restrictions are displayed. For more information, refer to 2.6 “RV Access
Restriction”.
Display Description
R/W Permit Indicates that the volume can be read and written from the host.
Read Only Indicates that the volume can be only read from the host.
Not Ready Indicates that the volume cannot be operated from the host.
Not Available Indicates that the volume cannot be operated from any host.
(xiii) Differential Quantity of Volume
Indicates the amount of difference after Separate (including the state right after pair setting) and
the amount of difference (the remaining amount) during synchronous execution.
Amount of difference may not change if I/O load is too heavy.
If a link failure occurs, amount of difference may not change. In this case, refer to 2.2.2 (2)
“Link fault” in the “Data Replication User’s Manual (Installation and Operation Guide for
Windows)”.