Should I split a big (8TB) backup disk into more than one partition, or not?

Liam Proven lproven at gmail.com
Thu Sep 24 08:30:33 UTC 2020


On Mon, 21 Sep 2020 at 11:18, David Fletcher <dave at thefletchers.net> wrote:
>
> Myself, I've never used RAID. Everybody must understand that if you
> have an array of n units of a particular HDD with a known MTBF (FTs)
> then the MTBF of the array (FTa) is going to be FTa = FTs/n. Plus
> you've probably got additional hardware to interface to all the drives
> which will further reduce the MTBF.

Um. I am not familiar with your notation, but that is not how RAID works, no.

You appear to be ignoring the R in RAID. The R is the important bit,
because redundancy is why a RAID has a _longer_ MTBF than any of its
individual drives.

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