After multiple recent support issues with SanDisk brand USBs, we don't recommend buying SanDisk USBs for Unraid at this point.
Either due to counterfeit devices being sold or a manufacturing change directly from SanDisk, multiple users have attempted to boot SanDisk USBs and found out that they do not register a unique GUID and therefore, cannot be properly licensed with Unraid.
Multiple attempts at contacting SanDisk on this issue have gone nowhere.
For a great run
When I worked for a very large WINDOW company, we used these USB drives to handle 60-70 customers a day. OS reinstalls, Malware/Spyware/Virus scans, Paragon Backups, etc. Out of our 27 drives we had 3 fail in the span of 4 years. Very reliable USB drives.
https://www.kanguru.com/products/kanguru-flashblu30-usb3-flash-drive
https://www.kanguru.com/products/kanguru-ss3
https://www.kanguru.com/products/kanguru-flashtrust-secure-firmware-usb-3-0-flash-drive
Looks like Stap