You can view and manage information for replication pairs on a storage system. This information is useful for determining which volumes are paired.
To view the replication pairs on a storage system:
- Browse to the storage system where you want to view replication pair information.
- Select Replication Pairs.
The following information is displayed in the replication pairs list:
- Status
- The status of the given volume in a volume pair.
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- UNKNOWN: Status is unknown.
- COPY: Initial copy operation for the volume pair is in progress. The pair is not yet synchronized.
- PAIR: Volume is in a paired state. The initial copy is completed and the data is duplicated.
- PSUS: Volume pair is in a suspended state for the primary volume.
- PSUE: Volume pair is suspended and blocked due to a failure condition.
- PDUB: One of the LDEVs within the LUSE has failed.
- RCPY: Copying is in progress by resynchronization.
- PFUL: Thin Image or Copy-on-Write Snapshot pool exceeds the threshold in the PAIR status.
- PFUS: The Thin Image or Copy-on-Write Snapshot pool exceeds the threshold in the PSUS status.
- SSWS: Secondary volume is in a suspend-with-swap state.Note: The volumes in a replication pair cannot be deleted using UCP Advisor. An error message is generated when the deletion of a GAD pair is attempted.
- P-Vol
- In a volume pair, P-VOL is the source volume that is copied to another volume using the volume replication functionality of the storage device. The data on the P-VOL is duplicated synchronously or asynchronously on the secondary volume (S-VOL).
- PVol Name
- The primary volume name.
- PVVol
- The virtual volume associated with the P-VOL.
- PVol Serial
- Serial number of the storage system that includes the P-VOL.
- PV Dev
- The primary virtual device associated with the replication pair.
- PResGrp
- The resource group that is associated with the primary volume in the replication pair.
- SVol
- After a backup, the volume in a replication pair that is the copy of the original data on the primary volume (P-VOL). Recurring differential data updates keep the data in the S-VOL consistent with the data in the P-VOL.
- SVol Name
- The secondary volume name.
- SVVol
- The virtual volume associated with the secondary volume in the replication pair.
- SVol Serial
- Serial number of the storage system that includes the S-VOL.
- SV Dev
- The virtual device associated with the secondary volume in the replication pair.
- SResGrp
- The resource group that is associated with the secondary volume in the replication pair.
- Type
- Type of replication pair global-active device (GAD), Hitachi TrueCopy®, and Hitachi Universal Replicator (HUR).
- Access
- Access mode for the S-VOL after pairs are split. Valid values are READONLY and READWRITE.
- Mir ID
- When multiple S-VOLs are created for one P-VOL, a mirror ID is assigned to each volume pair.
- CG ID
- The ID of the consistency group in which the volume pair resides. If not consistent, no value is shown and a hyphen is displayed.