From owner-freebsd-database@FreeBSD.ORG  Tue Mar 30 21:39:08 2004
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Date: Tue, 30 Mar 2004 21:39:08 -0800
From: Mark Mayo <mark@vmunix.com>
To: Sean Chittenden <sean@chittenden.org>
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cc: "Database@BSD" <freebsd-database@freebsd.org>
Subject: Re: Largest Disk Partition
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I know the underlying VM system has been able to cross the 2TB barrier
for quite some time, but can SCSI LUNs be bigger than 2TB now?

-Mark

On Tue, Mar 30, 2004 at 03:57:38PM -0800, Sean Chittenden wrote:
> >What it the largest disk partition that FreeBSD can support?
> 
> FreeBSD 5 uses UFS2 which uses signed 64bit sizes:
> 
> irb(main):001:0> max = 2 ** 63
> => 9223372036854775808 bytes
> irb(main):002:0> max /= 1024
> => 9007199254740992 kilobytes
> irb(main):003:0> max /= 1024
> => 8796093022208 megabytes
> irb(main):004:0> max /= 1024
> => 8589934592 gigabytes
> irb(main):005:0> max /= 1024
> => 8388608 terabytes
> irb(main):006:0> max /= 1024
> => 8192 petabytes
> 
> It's bigger than any existing hardware can support.  :)  -sc
> 
> -- 
> Sean Chittenden
> 
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-- 
 Mark Mayo        <mark@vmunix.com>       http://www.vmunix.com/~mark
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