Resize Volume and Autogrow not supported in Synchronous mode

The Resize Volume and Autogrow operations are not supported when replication is done in Synchronous mode. While Synchronous replication is paused to resize volumes, writes necessary to grow the file system cannot occur. (103613)

Workaround: To resize the volume, temporarily change the mode of replication to Asynchronous or Synchronous Override. After you finish resizing the volume, you can switch replication back to the Synchronous mode.