These are the tracks that will be returned to the srp

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These are the tracks that will be returned to the SRP if the snapshot is terminated. As we did not specify a time-to-live during the establish operation, the Expiration Date is NA . Note that the output has been edited to fit the slide. TimeFinder SnapVX Operations
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15 Copyright 2015 EMC Corporation. All rights reserved. We can set the time-to-live even after creating the snapshot. Output has been edited to fit the slide. The parameter delta is used to specify the number of days for expiration from the time the snapshot was created. TimeFinder SnapVX Operations
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16 Copyright 2015 EMC Corporation. All rights reserved. We can specify the generation of the snapshot that we want to link. The target device is contained in a Storage Group as well. It is specified with the lnsg flag. The default for linking is the NoCopy mode. So we see that no data has been copied yet. Furthermore, at this point in time, we are not writing to the target device either. Flgs: (F)ailed : F = Force Failed, X = Failed, . = No Failure ( C )opy : I = CopyInProg, C = Copied, D = Copied/Destaged, . = NoCopy Link ( M )odified : X = Modified Target Data, . = Not Modified ( D )efined : X = All Tracks Defined , . = Define in progress TimeFinder SnapVX Operations
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17 Copyright 2015 EMC Corporation. All rights reserved. When target is written to, the original point-in-time snapshot is unaffected it remains pristine. The % Done and Remaining (Tracks) indicates tracks that have been changed due to the writes. This helps with incremental operations later if desired. TimeFinder SnapVX Operations
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18 Copyright 2015 EMC Corporation. All rights reserved. In this example we are relinking the target to snapshot generation 1 of the same source volume. The target volumes should be unmounted prior to relinking and then mounted back again to ensure that the host accesses correct data. We can link/relink different snapshots to target volumes to select the desired point-in-time. TimeFinder SnapVX Operations
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19 Copyright 2015 EMC Corporation. All rights reserved. Any available snapshot can be restored to the source volume. This will revert the data on the source volume to that specific point-in-time. As the data on the disk will be changing from the host’s perspective, it is recommended to unmount the source volume prior to performing a restore operation. After the restore, the source volume can be mounted again to access the correct data. Terminating the restored session will leave the original snapshot intact. It will only terminate the restored session. TimeFinder SnapVX Operations
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20 Copyright 2015 EMC Corporation. All rights reserved. Care needs to be exercised when expanding SGs with existing snapshots. If there are more volume(s) in the SG than are contained in the snapshot, then a restore from the snapshot will set these additional volume(s) to Not Ready. This is because these volume(s) were not present when the snapshot was taken. Of course subsequent snapshots after the SG expansion will contain all the volumes. Similarly if the linked target SG has been expanded and has more devices than the snapshot, then the additional volumes in the linked target SG will be set to Not Ready.
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