Depends on how many nodes you have.<div>They reserve port 13-20 (8 ports) as an ISL.</div><div>That allows you to connect up to 12 nodes.</div><div>There is an expansion slot on the 5010 to allow</div><div>for more ISL&#39;s and more nodes, if needed. I think they take you to</div>

<div>a set of 5020&#39;s for a full 24-node cluster.</div><div><br></div><div>Oh, and you may think it seems excessive, it is if you only have a handful of nodes.</div><div>But, if you are purchasing from NetApp, they basically, &quot;throw in&quot; the extra switches.</div>

<div>i.e. the 5010&#39;s and the 2960&#39;s</div><div><br></div><div>SFO - Storage failover</div><div>CFO - Controller Failover</div><div><br></div><div>CFO is used when you have a two node system. It is basically the same thing as failover in 7-mode/ONTAP7</div>

<div><br></div><div>Storage Failover allows for only aggregates to failover, not necessarily waiting on the controller. Since there is a global</div><div>namespace and logical interfaces, controller failover is not needed when using more than 2 nodes.</div>

<div><br></div><div>And as been said a few times now...you get no SFO/CFO capability in the simulator. they are only</div><div>stand alone nodes.</div><div><br></div><div>--tmac<br>         Tim McCarthy<br>     Principal Consultant<br>

<br>  RedHat Certified Engineer<br>   804006984323821 (RHEL4)<br>   805007643429572 (RHEL5)<br>
<br><br><div class="gmail_quote">On Mon, Jul 23, 2012 at 10:57 AM, John Stoffel <span dir="ltr">&lt;<a href="mailto:john.stoffel@taec.toshiba.com" target="_blank">john.stoffel@taec.toshiba.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<br>
tmac&gt; It is not terribly bad, but the filesystems are not compatible<br>
tmac&gt; at all.  ALL data is wiped/disks are zero&#39;d<br>
<br>
tmac&gt; Plus you need to get license keys from NetApp for cluster mode.<br>
tmac&gt; Set some environment variables.<br>
<br>
tmac&gt; Make sure you have proper networking...  i.e. 2 x Cisco 5010<br>
tmac&gt; switches solely for the cluster backend and 2 x Cisco 2960<br>
tmac&gt; switches for the administration network and then whatever<br>
tmac&gt; networking you want to add on top of that for your data<br>
tmac&gt; network(s).<br>
<br>
This seems amazingly excessive.  You can&#39;t use those same two Cisco<br>
5010s for boththe cluster *and* the management?  It&#39;s got 20 10gib/s<br>
ethernet ports, how many do you need for the backend?<br>
<br>
tmac&gt; Make sure you have multi-path storage properly configured.<br>
<br>
tmac&gt; You are best off getting the simulator and playing with that for<br>
tmac&gt; a while to see how it goes. The downside to the simulator is<br>
tmac&gt; that it now longer supports ha mode (it did way back in 7.x<br>
tmac&gt; days, but not not so much) so you end up with two single nodes<br>
tmac&gt; with now sfo/cfo capability.<br>
<br>
I assume you meant &quot;no sfo/cfo&quot; instead?  But could you please explain<br>
sfo/cfo as well?  Is that &#39;single failover/cluster failover&#39; like I<br>
suspect?  I&#39;m certainly motivated to spin up the simulator to start<br>
getting used to this new OS and to see how it would impact us if/when<br>
we upgrde our existing systems.<br>
<br>
John<br>
    John Stoffel - Senior Staff Systems Administrator - System LSI Group<br>
  Toshiba America Electronic Components, Inc. - <a href="http://www.toshiba.com/taec" target="_blank">http://www.toshiba.com/taec</a><br>
             <a href="mailto:john.stoffel@taec.toshiba.com">john.stoffel@taec.toshiba.com</a> - <a href="tel:508-486-1087" value="+15084861087">508-486-1087</a><br>
</blockquote></div><br></div>