@warj4r how much space do you mine ?
It is not unusual to have a bad bit read from a disk every 12 TB, as this is the statistically given value for consumer SATA drives (10^-14). Bits on the platter are physically small (a few hundred atoms in diameter), so there's lots of checksumming involved and the actual read is a "guess the data"-process. The error correction algos have a statistical chance to fail, and this is given in the datasheets as unrecoverable read error (URE). That is, the error correction fails sometimes and you have a chance of reading a block without the drive noticing corruption.
What does that mean in a real-world scenario like burst-mining ?
If you mine 10 TiB of plots, on every block you read 2.5 GiB (10 TiB/4096). So, every 4915 blocks (12 TiB/2.5 GiB == 4915) you read and process a bad bit, wrecking your deadline. 4915 Blocks is every 13.6 days. This is a probability, so you could go unharmed for 100 days or even have a streak of bad luck with 10 bad reads on a day.
If you see this error more often, it might be a good idea to replot, as there is more bad(ly read or written) data than statistics allow for.
And you have a lot more error sources in a typical setup; the USB3 bus, the USB3-controller&Hubs, PCIexpess bus, a non-ECC secured main memory, non-ECC secured memory buses).
There are filesystems out there that compute a checksum for every block transaction at the OS layer, thus preventing these read errors to go undeteced (and wreck your application), namely btrfs and zfs (on Linux, Solaris et.al., OSX and FreeBSD).
Usually, these errors go undetected in a home environment (as there is not enough data on disk and in transport). But Bitrot (as its casually called) is a major problem in larger installations and you start to recognize it if you store or move a lot of data. And that could mean a mere 100 TB, depending on access patterns. I've been burned by that in a professional context. My client switched from SATA to SAS (URE: 10^-16) and implemented zfs, problems gone. Research "bit rot".