Pair status definitions

Both Device Manager - Storage Navigator and CCI pair status names appear in the Status column, except when the names are the same. When they are the same, the CCI status does not appear.

The following table shows both types of status names and their descriptions. In some cases, a particular status has no exact parallel status in the other interface. This is noted.

When checking your pairs' status, click Refresh to make sure the data is current. The P-VOL access and S-VOL access columns in the following table indicate whether the volumes accept read/write.


HDvM - SN status	CCI status	Description	P-VOL access	S-VOL access
Unpaired in HDvM - SN	SMPL	This volume is not currently assigned to a TrueCopy pair.	Read/Write	Read/Write
COPY¹	COPY	The initial copy operation for this pair is in progress. This pair is not yet synchronized.	Read/Write	Read Only
PAIR	PAIR	The pair is synchronized Updates from the host to the P-VOL are duplicated in the S-VOL.	Read/Write	Read Only
PSUS	SSUS, PSUS	The pair was split by a user or deleted from the secondary system. The pair is not synchronized. When you split the pair from the primary system, that system changes the status of the P-VOL and S-VOL to PSUS. In PSUS status, updates to the S-VOL stop. The storage system keeps track of updates to the P-VOL in order to update the S-VOL when the pair is resynchronized. CCI also shows P-VOL status as PSUS. When you split the pair from the secondary system, that system changes the status of the S-VOL to PSUS. The primary system detects this and changes P-VOL status to PSUS. CCI shows the S-VOL status as SSUS. When you release the pair from the secondary system, that system changes the S-VOL status to SMPL. The primary system detects this and changes the P-VOL status to PSUS. The pair must be released from the primary system in order to change P-VOL status to SMPL. CCI PSUS status indicates that although the paired status is retained, the user split the pair. This status is only for the P-VOL. While the pair is split, the storage system keeps track of updates to the P-VOL in the differential bitmaps.	Read/Write	Read only if S-VOL write option is disabled. Read/Write if S-VOL write option is enabled.
PSUE	PSUE	If the primary system cannot keep the pair synchronized for any reason, it changes the status of the P-VOL and S-VOL (if possible) to PSUE. The pair is not synchronized.	Read/Write. Read only if Primary Volume Fence Level is Data.	Read Only
¹ When pair status is COPY, neither cache nor shared memory can be added to or removed from the storage system. When either of these tasks is to be performed, first split any pairs in COPY, status, then resynchronize when the cache or shared memory operation is completed.