Dell PowerStore Importing External Storage to PowerStore Guide

Cutover workflow for file-based import

You can cut over a file-based import when the import session reaches the Ready For Cutover state. The following steps show the manual import workflow in PowerStore Manager:

1. Select the file import session to cut over.
2. Select the Cutover import action to cut over to the PowerStore cluster. The following cutover processing occurs:
   NOTE:Cutover may cause a temporary data unavailability to the NAS clients.
   • The production file interfaces are disabled on the source system and are enabled on the destination system.
     NOTE: In the case of SMB import, the switch over is disruptive for the clients and the Active Directory configuration is imported if needed. In the case of NFS import, the switch over is transparent as file handles are preserved, NLM locks are reclaimed on the destination.
   • The incremental background data copy operation begins after the cutover completes. The file system data is moved to the destination in the background.
   • The destination system serves the clients; data requested by the client is synchronized immediately; write operations are synchronized back to the source system before acknowledging, so the source remains authoritative and a rollback is possible at any time. I/O throughput is degraded at this stage.
     NOTE:The service is interrupted if the source data becomes unavailable.

When all files are synchronized, the file import session transitions to Ready For Commit.