Largest Hard Drive

Dan Strick strick at covad.net
Tue Mar 30 15:30:44 PST 2004


>>
> What is the largest hard drive that FreeBSD can suppport?
> Is there a limit?
>>

Since the block number in the kernel buf struct is still a 32 bit
integer (in FreeBSD release 4.9 at least),  I would guess that
FreeBSD can handle at most a Terrabyte (2^40 bytes) or two (if the
block number is unsigned) on a single hard disk.

If you try to make a single file system that large, you may find
that things like fsck don't scale very well.

Dan Strick
strick at covad.net


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