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# TimeFinder/Mirror session options

TimeFinder/Mirror is a business continuity solution that enables the use of special business continuance volume (BCV) devices.

TimeFinder/Mirror is not supported storage systems running PowerMaxOS 10 (6079).

TimeFinder operations are not supported on Open Replicator control volumes on storage systems running HYPERMAX OS 5977 or PowerMaxOS 5978.

The following table describes the TimeFinder/Mirror session options:

Table 1. TimeFinder/Mirror session options
Session option | Description | Available with action
--- | --- | ---
Bypass | This option bypasses the storage system's exclusive locks for the local or remote storage system during mirror operations. | Split Full Restore Incremental Restore
Consistent | This option causes the standard volumes being managed to be consistently split. Cannot be combined with the Instant option. | Split
Differential | This option indicates that the split operation should initiate a differential data copy from the first mirror set member to the rest of the BCV mirror set members when the BCV pair split is done. | Split
Force | This option overrides any restrictions and forces the operation, even though one or more paired volumes may not be in the expected state. Use caution when checking this option because improper use may result in data loss. | Full Establish Incremental Establish Split Full Restore Incremental Restore
Differential | This option is used with either the Copy or Precopy option to create an SDDF session for maintaining changed track information. This procedure must be used when creating copy sessions on which you plan on issuing a Restore action. | Create Establish
Force | This option overrides any restrictions and forces the operation, even though one or more paired volumes may not be in the expected state. Use caution when checking this option because improper use may result in data loss. | Create Establish Activate Restore Split Terminate
Not Ready | This option sets the target volumes as Not Ready. Upon completion of a split action, the target volumes are set as Not Ready. When a restore is initiated, the standard volumes are set as Not Ready. | Split Full Restore Incremental Restore
Optimize | This option optimizes volume pairings across the local storage system without regard for whether the volumes belong to different SRDF (RA) groups. For remote volumes , use the Optimize Rag option. | Full Establish
Optimize Rag | This option uses optimization rules to create remote BCV pairs from volumes within the same SRDF (RA) group on a storage system. | Full Establish
Protbcvest | This option applies to two-way mirrored BCV volumes. The option moves all mirrors of the BCV volume to join the mirrors of the standard volume. | Full Establish Incremental Establish
Protect | This option indicates that the BCV should be write-protected before initiating a restore operation. | Split Full Restore Incremental Restore
Remote | This option is applicable only for split operations on a BCV SRDF1 volume, or a restore operation from a BCV to a STD SRDF2 volume. If this option is not specified, the mode defaults to not propagate the data to the remote mirror of the SRDF volume. | Split Full Restore Incremental Restore
Reverse | With a split operation, initiates a reverse data copy from one or more fixed BCV mirrors to the first (moving) mirror of the BCV upon the completion of the split operation. With an establish or restore operation, requests a verification check that the fixed mirror of the BCV has valid data. If at establish or restore time, you anticipate a need to perform future BCV reverse split operations, you must apply a reverse establish or restore so that no invalid tracks on the fixed BCV mirror become used. | Full Establish Incremental Establish Split Full Restore Incremental Restore
Star | This option targets the action at volumes in SRDF/Star mode. | Full Establish Restore Split Cancel
SymForce | This option forces an operation on the volume pair including pairs that would be rejected. Use caution when checking this option because improper use may result in data loss. | Full Establish Incremental Establish Split Full Restore Incremental Restore