No, I don't, and no it does not.
Sentry is the folder that the previous 10 minutes of
dashcam video gets moved to if sentry goes to alert mode.
So you are playing back
dashcam recordings that got moved to the sentry folder.
Several ways you can confirm this, apart from the manual.
Most obvious:
Turn off dashcam.
Turn on Sentry.
Notice how
nothing gets recorded to the USB stick.
Because sentry doesn't "record" anything. Dashcam does.
or
Remove the USB stick entirely.
Turn on senty.
Notice how it does not complain about being unable to record video? That's because that's not a function of sentry mode.
Dashcam on the other hand you
can't turn on without the USB storage attached, because that's the feature that actually records video.
If you want a deeper dive- The manual can be a bit unclear if you aren't paying attention to the actual in-car functionality, but here's some highlights:
Learn about the features you can use to record videos when driving and monitor the security of your vehicle when parked.
www.tesla.com
It discusses both features "saving" video in specific situations. This is
not discussing recording it's discussing moving
existing recordings to a folder that does not get automatically overwritten after 60 minutes like the normal non-saved dashcam recordings.
The most relevant line here though is
And the reason, of course, is that
dashcam is the
only feature that actually
records video.
If sentry ever recorded than pausing dashcam wouldn't stop it would it?
Look further down and you'll then find this:
One of sentrys features is it
keeps the car powered on so that dashcam, not sentry, keeps recording- as I explained earlier.
Continue scrolling and it explains the 3 different folders on the drive:
Recent clips-- this is a 60 minute buffer dashcam saves to by default. It will clear/overwrite older than 1 hour clips automatically.
Saved clips-- this is anytime you manually tell the car to "save" footage, either via the dashcam button or via the horn if you have that set up-- this will move the last 10 minutes of
dashcam footage from recent to saved. And it will not overwrite these clips.
Sentry clips-- this is anytime sentry goes to alert mode
and dashcam is on it will then move the last 10 minutes of
dashcam footage from recent to sentry. It will not overwrite these clips
unless your drive is nearly full, then it will, starting with the oldest.
If you read down a bit further it explains that "alert" state, including that it saves that most recent 10 minutes of footage... which again is
dashcam recordings.