kern/118912: [2tb] disk sizing/geometry problem with large array

[Gary Palmer]

The following reply was made to PR kern/118912; it has been noted by GNATS.

From: Gary Palmer <gpalmer at freebsd.org>
To: bug-followup at FreeBSD.org, freebsd at stega.org
Cc:  
Subject: Re: kern/118912: [2tb] disk sizing/geometry problem with large array
Date: Fri, 21 Dec 2007 11:15:49 +0000

 See: 
 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/disks-adding.html
 
 Quote:
 
 Due to the use of 32-bit integers to store the number of sectors, 
 bsdlabel(8) is limited to 2^32-1 sectors per disk or 2TB in most cases. 
 The fdisk(8) format allows a starting sector of no more than 2^32-1 and 
 a length of no more than 2^32-1, limiting partitions to 2TB and disks to 
 4TB in most cases. The sunlabel(8) format is limited to 2^32-1 sectors 
 per partition and 8 partitions for a total of 16TB. For larger disks, 
 gpt(8) partitions may be used.