HP StorageWorks P9000 - Disk Arrays User Manual page 163

Pair Operation
Pair JNL: The journal number for the remote storage system. This column is blank if the volume in the
(continued)
local storage system is neither a P-VOL nor a S-VOL.
Err Lv.: The range of pair split on error.
Mirror: If an error occurs with this pair, all the pairs in the mirror where this pair belongs will be split.
LU: If an error occurs with this pair, only this pair will be split.
Sync.: If the volume in the local storage system is a P-VOL, this column shows progress of an initial
copy operation. If the volume in the local storage system is a S-VOL, this column shows information in
the following ways:
- If the volume pair is not split, this column shows nothing.
- If the volume pair is split and therefore is in PSUS or PSUE status, this column usually shows
synchronization rate (that is, concordance rate) between the S-VOL before it became split and the
S-VOL after it became split.
For example, the synchronization rate (that is, concordance rate) is 100 percent if the contents of the
S-VOL are the same before and after the volume pair became split.
CAUTION:
shows nothing. If a failure occurs in the initial copy operation, the Detailed Information dialog box
shows the phrase "Initial copy failed".
In the following cases, this column will be blank:
- When the volume in the local storage system is neither a P-VOL nor a S-VOL.
- When the status of the volume pair is HOLD or HLDE.
CLPR: The number and the name of the CLPR where the data volume belongs.
Pair Copy Time: The time taken for the copy operation (from the start of the operation to the end). The
time that is shown in Pair Copy Time differs from the time that is shown in Copy Time on the History
window.
To create a pair:
- MCU receives a request to create a pair.
- MCU receives a request to start the paircreate operation.
- The paircreate operation is started according to the conditions of initial copy priority and initial copy
activities.
Pair Copy Time The time taken for the copy operation (from the start of the operation to the end). The
time that is shown in Pair Copy Time differs from the time that is shown in Copy Time on the History
window.
To create a pair:
a. MCU receives a request to create a pair.
b. MCU receives a request to start the paircreate operation.
c. The paircreate operation is started according to the conditions of initial copy priority and maximum
initial copy activities.
Pair Copy Time shows the amount of time needed from step a to the completion of the paircreate
operation (i.e., the progress of the paircreate operation reaches 100%). Copy Time on the History
window shows the amount of time needed from step a to the completion of the paircreate operation.
Used Volume The size of used volumes, and also indicates the licensed capacity. For example, if 12.34 (15.0) (TB)
appears, the licensed capacity for Cnt Ac-J is 15.0 terabytes, and 12.34 terabytes of volumes are used.
If the licensed capacity is unlimited, the sized of used volume does not appear.
Total Pairs The current total number of pairs.
Preview The Preview list shows changes that have been made in the window. When you change settings in the
window, the changes appear in the Preview list before the changes are applied to storage systems. If
you are sure that information in the Preview list is correct, click Apply to apply the settings that you have
made.
When the Preview list shows changes that have been made, you can perform only the same type of
operation that you have been doing and cannot perform most of other operations (you can only view
detailed information about pairs even when the Preview list shows changes). For example, if you are
trying to release pairs and the Preview list shows the pairs that you want to release, you are unable to
perform any other operations; for example, you are unable to split pairs and restore pairs.
If a failure in the initial copy operation causes the volume pair to be split, this column
Pair Operation window 163