[CentOS] Drive problem

> I was rsync'ing data from one system to another, and the recipient
> suddenly started throwing DRDY errors. Now, it's a fairly new WD Red 3TB,
> and I'd think it was just a bad drive... but I'm really confused by this,
> from the logs:
> Jun 15 15:34:43 <servername> kernel: ata3: SError: { Dispar }
>
> Dispar? And googling, every reference I find to that word always has
> something else there.
>
> System's running 5.11. Filesystem's xfs.

Did you actually google the log message?

  "kernel: ata3: SError: { Dispar }"

Regardless, it's an interface error (ata)...

https://ata.wiki.kernel.org/index.php/Libata_error_messages