Hello,  yes there will be a small downtime for each host for the cutover phase. Shut down the host, perform the last delta-copy in SAN copy, then remove host access for the LUNs on the VNX and add host access on the LUNs on the Unity. Then bring the host back up. This document has a detailed description: [URL]  I have done this for a few migrations and it is fairly easy. For Windows hosts I had to manually bring the disks online in disk manager, but they were recognised with the correct drive letter straight away. There is also an import assistant which can automate this process, but it also requires a downtime for the cutover. Regards, Stephen
I will be migrating from VNX to Unity using SAN Copy. However, there is no where in the document that really let's me know if I will experience downtime after the migration is complete. Can anyone let me know if and when I will experience downtime? If so, then how long?   Helpful answers will be appreciated.
SAN COPY VNX5400 to UNITY500