Availability Groups - Migrating Secondary to a new server without taking another full backup/restore

Hello,

I have to migrate my DR server to a bigger box so I already installed the server on the remote datacenter and now I have to add it into the AG. this server will replace the old secondary.

Is there any way to move the secondary without having to take a new full backup and copying the BAK files from the primary ? Is there any way to accomplish this task moving the files from the existing secondary? 

I am asking because moving the BAK files from the WAN connection will take me several days due to the BAK files sizes and the network bandwidth

Thanks

Regards,

Javier Villegas

DBA // MCTS // MCP

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