Hardware RAID controller questions - 3Ware vs RocketRaid
m.seaman at infracaninophile.co.uk
Thu Mar 18 10:24:22 UTC 2010
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On 18/03/2010 10:09:55, Erik Trulsson wrote:
> On Thu, Mar 18, 2010 at 09:37:32AM +0100, Andy Wodfer wrote:
>> We're setting up two backup servers where each server will have about 4TB of
>> harddrives (for now) connected (4x1TB and 8x500GB drives). Last night we ran
>> into trouble with the 3ware controllers we have (9650SE-8LPML) because we
>> couldn't create a larger RAID5 than 1.99TB.
> That is strange, since all the 3ware 9000-series controllers (including
> the 9650) are supposed to be able to handle arrays larger than 2TB.
Is it perhaps not a limitation in the 3ware controller, but rather the
2TB limit for a single slice imposed by the traditional DOS mbr? In
which case, simply switching to using gpart(8) should solve the problem
and let you have much larger filesystems.
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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