Dell Unity™ Family VNX® Series Data Import to Unity All Flash or Hybrid, or UnityVSA™ System User Guide

Cut over import session for block

Cut over and complete an existing block import session. Cutting over a block import session can be a long and disruptive process. To reduce the period of disruption, set the cutover threshold as small as possible. By decreasing the cutover threshold to a small value, a smaller number of changes will need to be transferred after the application is quiescent. The cutover threshold is a percentage of the LUN size and hence for larger LUNs it is recommended that the cutover threshold be set to a value smaller than the default value of 5 percent. Lastly, cut over an import session only when the session is in the Cutover Ready state. This action ensures that the cutover is performed when the least number of changes has to be transferred.

After cutover completes successfully, host IOs are switched to the target side and the import process completes automatically.

Format

/import/session/block -id <value> cutover [-async]

Object qualifier

QualifierDescription
-idType the ID of the import session.

Action qualifier

QualifierDescription
-async Run the action in asynchronous mode.

Example

The following command cuts the import session, import_1, over to the target system:

uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /import/session/block -id import_1 cutover
Storage system address: 10.0.0.1
Storage system port: 443
HTTPS connection

Operation completed successfully.

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