Re: AAC driver limited to 243GB per "disk"?

From: Juergen Keil (jk_at_tools.de)
Date: 08/30/05 

Date: Tue, 30 Aug 2005 17:02:00 +0200

Peter Eriksson <peter@ifm.liu.se> writes:

> Just installed Solaris 10 GA on a PC equipped with
> with 14 400GB SATA drives connected to an Adaptec 21610SA
> (16 port RAID) controller.
>
> Everything works fine, I set up the disks as 7 two-way striped
> disk volumes (about 750GB each) and Solaris finds seven volumes
> when it boots.
>
> However... Solaris thinks they all are 243GB in size. Now, that's a
> pretty hefty taxation of the disk space!
...
> format> current
> Current Disk = c0t0d0
> <DEFAULT cyl 31721 alt 2 hd 255 sec 63>
> /pci@0,0/pci8086,3599@6/pci8086,32a@0,2/pci9005,293@1/sd@0,0

I guess the controller reported (65536+31721) == 97257 cylinders,
which overflows the SunOS disk labels' 16-bit ncyl field and gets
truncated from 97257 to 31721 cylinders.

==> (65536+31721)*255*63*512 = 799966056960 = 800 (marketing) GB

==> 31721 *255*63*512 = 260914106880 = 260 GB

119375-03: "SunOS 5.10_x86: sd patch" should fix this problem.

For initial system installation there is an ITU floppy, too:

119376-02: "SunOS 5.10_x86: ITU for sd patch 119375-03"

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