I think the only limitation on an aggregate is the size of the aggregate. The raw max of an aggr is 17TB. So with 500 GIG drives after spares, etc you use 34 Disks. So 500 GIG ata the max aggr is 34 Disks.
With say 144GIG drives you could get 118 Disks in an aggregate.
Hope that helps
(this is on data on tap 7.2)
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of John Foley Sent: Thursday, April 05, 2007 11:30 AM To: toasters@mathworks.com Subject: number of disks in an aggregate ?
Hi all, I wanted to ask the collective wisdom out there about how many disks to put in an aggregate.
I have an F825 with 2 DS14 shelves, currently set up as 1 aggregate (so 28 disks in the aggregate), double parity, and 2 spares.
I will be adding another DS14 shelf, identical disks as the other 2 shelves. My preference is to just extend the existing aggregate to 42 disks, and set up another volume for the new data that will be going on there - but I believe NetApp says that 28 disks is the max for an aggregate.
So, question is - anyone out there using more than 28 (like 42 !) disks in an aggregate ? Is it possible ? recommended ? I thought that the more disks the better in an aggregate for performance reasons, but I thought I'd see what you all say !
Thanks,
John