This is just to help people know how big of a drive they'll need for the TeslaCam/Sentry mode in software v10:
There are four cameras recording video (front, rear, left and right sides). Each one minute of recorded video is about 28 Megabytes (MB). TeslaCam is on a 60 minutes loop that continuously overwrite its files. It saves ten minutes (4 cameras) if you save an event by touching the TeslaCam icon. Sentry mode events are also ten minutes. I remember reading that Tesla software v10 will overwrite sentry mode events if they’re taking up more than 5GB and the drive is running out of space.
TeslaCam main one hour loop: 28 MB per minute x 4 cameras x 60 minutes = 6.7 GB (Gigabytes)
TeslaCam/Sentry saved event: 28 MB per minute x 4 cameras x 10 minutes = 1.1 GB
So now you have to decide what your situation is like: If you never save events and don’t use sentry mode a 16GB look to be good enough. A 128GB drive (or larger) will let you save several events, either manually or in sentry mode. Just remember that eventually you need to erase them or the drive will fill up and they’ll be overwritten because of the 5GB and no space… as I said earlier.
USB flash vs SD (or microSD) cards: I’m no expert at this but from what I’ve read the main advantage of SD cards is wear leveling. Each cell/block inside a flash drive or SD card has a finite number of write you can do and then it goes bad where it cannot be written anymore. SD cards keep track of this and select other cells/blocks to write so the whole drive “wears” evenly giving you a longer life span. USB flash drives don’t seem to have this so when some cells/blocks go bad you get error messages and even though the rest of the drive may be ok you cannot use it anymore.
Setting up the drive for technical people: Format the drive/card as FAT32 and create a folder named TeslaCam. Plug in the USB port of your car and you’re ready to go. The teslacam icon has a red dot if recording so if you don’t see it, touch the icon to turn on recording. Sentry mode icon works the same way but looks a bit different. For drives and more info follow this link: https://teslatap.com/articles/usb-flash-drives-for-tesla-dashcam/
Non-technical people can buy a drive ready to use: https://www.ebay.com/itm/333346350036
Hope this helps people decide the size of the drive they need.