Boot FS check really slow, w/ one "gray" disk

So, when the FS Check finishes, I will taking disk 3 out and reboot. It should still have problems, though, shouldn't it? I mean, it's missing a volume, so it should be raising flags all over the place, right? The last time it booted, it did give me access to my RAIDar setup controls, but it did throw up errors like "could not mount XXXX."

At that point, do I just hot-swap a spare drive in channel 3?

I don't think "Skip FS check" is an option on the powerup menu in this particular firmware version. If I'm not mistaken, I get the option to check it off from RAIDAR for the next boot cycle. Boot options right from the power button include: short diagnostics, TFTP, USB boot, Long diagnostics, memory test, IIRC.

I will definitely back up and update firmware if this thing comes back to life. Yes, it's been a while. I'll be honest, the NAS has performed absolutely flawlessly for years and years with minimal intervention. The disks are also well worn, though not nearly as old as the NAS. I think the clock on them is roughly 700+ days. The previous set of disks were replaced without issue.