Error Message on non-existent drive

[kalpana]

Trying to understand why I am getting this error message on a non-existent drive, there is no sdf device on this system that I can find.

Sep 15 06:39:47 plex-hh kernel: [3331115.290384] Buffer I/O error on dev sdf1, logical block 1280796114, async page read

Any advice on where to look?

Scott