It has happened again… the very reason we encourage multiple media types in the 3-2-1-1-0 rule.

SanDisk Extreme & Extreme Pro devices have firmware issues causing data loss and devices becoming completely unreadable.

I don’t want to rewrite the article verbatim but one user reported a lot of read/write errors as the drive approached halfway consumed, and then upon disconnecting & reconnecting the drive appeared as unformatted.

SanDisk have stated a firmware fix will be available soon, but if you’re using these for backups or data offloads, be sure it’s not your only data copy…

Original Source: https://www.tomshardware.com/news/sandisk-extreme-portable-ssd-suffer-sudden-failures-wd-responds