How Long Does a Disk Preclear in Unraid Take for 12TB of Data?
I’m upgrading my 4TB drives in the NAS to 12TB drives. “Let’s be clever,” I thought (foreshadowing), “and do two things in parallel!” So installing the next drive into the disk array of my Unraid NAS, I let Unraid do these tasks: Does that speed things up, though? No, not at all, because Preclearing a disk takes 3x as long: Around 21 hours for each step that checks every nook and cranny of the HDD.