e0M is a NIC that’s “owned” by ONTAP, that’s not much different from e0a or e0b. Once you give it an IP address, you can ssh into it and get an ONTAP CLI, just like you could to e0a.
The RLM is a completely separate subsystem that has it’s own network interface. If you ssh into the RLM’s IP address or hostname, you’ll have access to the RLM itself and it’s CLI. From the RLM’s CLI, you can issue the ‘system console’ command to tunnel into the main controller’s CLI (ONTAP). Once you’ve tunneled in, you’re at the real ONTAP CLI. To exit and get back to the RLM’s CLI, issue a Ctrl-D.
On a FAS3100 series, an optimization was made to put both ONTAP’s e0M NIC and the RLM’s NIC behind an internal Ethernet 10/100 switch and then we present a single RJ45 jack so you only need one cable from there to your management network (they could both go on a data network if you don’t have a separate management network). This does assume you wanted e0M and the RLM on the same network.
So the trick to know is that you need an IP address for each device and there are two devices behind that RJ45. The other trick you need to know is how to get from the RLM to the ONTAP console and back. You can find more info in the SysAdmin guide, e.g.
http://now.netapp.com/NOW/knowledge/docs/ontap/rel732_vs/html/ontap/sysadmin/index.html
Look for “How to access the storage system” and “How to use the RLM...”
While I have the floor, I want to put in a plug to check out the Remote Support Agent functionality:
http://now.netapp.com/NOW/knowledge/docs/remote_support_agent/pdfs/rsa_userguide.pdf
We think it can vastly improve the support experience and reduce the case resolution time. Check it out.
Brad.
From: Kevin Sheen <sheenk@zbzoom.net>
Date: Mon, 14 Jun 2010 10:02:51 -0400
To: Simon Vallet <svallet@genoscope.cns.fr>
Cc: <toasters@mathworks.com>
Subject: Re: Several questions about ONTAP 8.0 and DS4243 shelves
We may be experiencing your item 3 below. I have a case open with Netapp but have yet to really work on it.
Our experience with e0M on a new 3140 is that when you ssh to that interface, we are place directly into what I would consider the system console and we don't currently know how to get back to the actual rlm interface. We've tried to reboot that rlm. If I hear anything on our case I can post our solution. I'm curious, are you experiencing the same issue with your e0m interface? Our serial port to the rlm seems to be fine, meaning we can utilize the rlm interface cli as well as access the system console and then get back to the rlm interface. This new 3140 replaced a 3020.
Thanks, Kevin
At 09:05 AM 6/14/2010, you wrote:
Hi,
we recently acquired two filers (3140) with DS4243 shelves, and upgraded
them to ONTAP 8.0. I know that this is a GA release, but I did notice
some glitches (which are perfectly understandable), and have some
questions for the people here who understand this better than me :
- installing the 8.0 doc yields a "Documentation for Data ONTAPTM 8.0
is installed, but is out-of-date." message ;
- I couldn't find any firmware updates for the DS4243 shelves on NOW --
is this normal? ;
- we configured the e0M interface (and I think that it is a great
idea), but I couldn't find a way to configure the filer to
exclusively be administrated through e0M (i.e. the embedded SSH
server now answers on both interfaces) ;
- since we migrated from a 7.x release, our root volumes are on 32-bit
aggregates -- is there a way to have the root volume on a 64-bit
aggregate (and if not, what is the technical reason for it) ?
Do some of you have encountered the same questions ?
Regards,
Simon
--
Simon Vallet
Ingénieur systèmes, réseaux, sécurité
CEA DSV/IG/GEN - Genoscope
Tél.: +33 1 60 87 36 06
Mél.: sjv@genoscope.cns.fr