Two particular benefits that apply to almost any workload, even on a 2-node configuration, are (a) the ability to nondisruptively move volumes between controllers and (b) when the system hits EOL you can nondisruptively move everything to a couple new nodes.

From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of tmac
Sent: Tuesday, January 20, 2015 2:45 PM
To: Iluhes
Cc: Toasters
Subject: Re: why flexpod use cluster os?

cDOT -> Clustered Data ONTAP

can run in a "single" node

can run in a two-node

can run in an even numbered nodes (up to 24, provided it is an approved config)

cDOT is an expandable OS that is the future of ONTAP.

If you look at 8.3, there is *NO* 7-mode release at all.

All new developments are on Clustered mode.

It also gives you a single, Global Namespace. 

In 7-mode, you essentially would manage (from a protocol perspective)  two nodes.

cDOT allows control for protocol to/from all nodes simultaneously.

--tmac

Tim McCarthy

On Tue, Jan 20, 2015 at 4:52 PM, Iluhes <iluhes@yahoo.com> wrote:

if it is a 2 node cluster. Why use cluster os?

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