Samsung UN55ES8000GXZE - Manual (Page 636)

Set the current time first to use this
function.
1. When you watch a broadcast
program, press the ∏ button on the
remote to record. A pop up window
will appear.
N We recommend using a USB
HDD with at least 5,400 rpm, but
a USB HDD of RAID type is not
supported.
N A USB storage device cannot