Actually 8.0 in 7-mode supports both 32 and 64 bit aggrs and can therefore create large aggrs.
As for the math for 32-bit aggr max size, 2^32 (#addressable blocks) * 4k (the block size) = 16TB.
Share and enjoy!
Peter Learmonth Virtualization Solutions Architect
NetApp 408.822.6072
peterl@netapp.com http://blogs.netapp.com/getvirtical/
-----Original Message----- From: Bert Kiers [mailto:kiersb@xs4all.net] Sent: Friday, July 30, 2010 2:09 PM To: lists@up-south.com Cc: Toasters Subject: Re: max aggr size of 16TB
On Fri, Jul 30, 2010 at 08:52:48PM +0000, lists@up-south.com wrote:
Aside from goin up in ontap version to 8 (currently at 726 and going to 733) and upgrading hardware (currently a 3070) is the 16tb aggr size a hard limit ?
It is my understandign that 8 has two modes: 8-in-7 mode, which still has the annoying 16 TB limit, and 'native' 8-mode which does not have that limit. Also, keep in mind that to move to >16 TB aggr, you have to recreate aggr and reinitialize snapmirror, which is really not funny to do.
Do you think 8 is ready for production use? (I mean that as a neutral question)
Grtnx,