Date: Fri, 21 Dec 2007 11:20:04 GMT From: Gary Palmer <gpalmer@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/118912: [2tb] disk sizing/geometry problem with large array Message-ID: <200712211120.lBLBK4Pg085413@freefall.freebsd.org>
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The following reply was made to PR kern/118912; it has been noted by GNATS. From: Gary Palmer <gpalmer@freebsd.org> To: bug-followup@FreeBSD.org, freebsd@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.
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