From owner-freebsd-hackers  Tue Feb 15 14: 3:14 2000
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From: Joe Greco <jgreco@ns.sol.net>
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Subject: Re: Filesystem size limit?
In-Reply-To: <200002152125.NAA00591@mass.cdrom.com> from Mike Smith at "Feb 15, 2000  1:25:24 pm"
To: msmith@FreeBSD.ORG (Mike Smith)
Date: Tue, 15 Feb 2000 15:31:19 -0600 (CST)
Cc: jgreco@ns.sol.net, dillon@apollo.backplane.com,
	hackers@FreeBSD.ORG
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> > >     The scary thing about this posting is that Joe was able to construct his
> > >     1TB+ filesystem with *ONLY* 37 hard drives.
> > 
> > 37?  38.  And you, a programmer! ;-)  And that gets you 1.9TB (disk mfr 
> > counting-wise).  I'd have loved to break 2TB but couldn't imagine how to 
> > handle the required number of scsi busses without botchery.  I could get 
> > 1TB with only 20 drives.  These _are_ 50GB drives.
> 
> An AMI MegaRAID 1500 will give you sixty devices - four LVD channels.  At 
> 50GB a disk, that's ~3TB from a single card.  Or you could go the FC 
> route, but that's probably too expensive to be fun.

I was under the impression that there were still device number limits with
the LVD spec.  Besides, figuring out how to actually physically set up
more than 9 devices is a pain.  The Kingston DS400 will do 9 devices, but
to do more, you then have to have another chassis with only 6 (for example).
Eats up space real quick :-(

... Joe

-------------------------------------------------------------------------------
Joe Greco - Systems Administrator			      jgreco@ns.sol.net
Solaria Public Access UNIX - Milwaukee, WI			   414/342-4847


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