Hi Jed,

I use OM3 on my 8G FC all the time, no problems.

Wiki says you can even use OM1 for up to 20m if you want. http://en.wikipedia.org/wiki/Fibre_Channel#Optical_carrier_medium_variants


On 31/03/2014 8:13 p.m., Jed Laundry wrote:

Hi Craig,

Sorry, missing from my post is that I've already got a box of OM3 cords that I could use. I just wanted to make sure that I'm not crazy, that OM3 is suitable for 8G FC, given the vendor's persistence that 5m OM4 is The Right Way.


Sent from a small screen.

On 31/03/2014 7:29 pm, "Craig Whitmore" <lennon@orcon.net.nz> wrote:
Why not just buy Pink OM4 Cables from CDL?


Why not just buy Pink OM4 Cables from CDL?

From: Jed Laundry <jlaundry@jlaundry.com>
Date: Mon, 31 Mar 2014 18:46:30 +1300
To: <nznog@list.waikato.ac.nz>
Subject: [nznog] OM4 MMF

Hi folks,

Excuse my ignorance, I try to avoid orange/aqua cables...

We recently had a rack of servers + SAN installed with 8Gb FC, and long story short, the vendor will only supply & install 5m OM4 cables.

*grumble grumble FCoE grumble 2m patch grumble*

AFAICT, OM4 is to OM3 what G.657A2 is to G.652 - completely interchangeable, especially for such a short run, just don't expect to wrap it around a pencil. And so I can swap out these stupidly long cables with properly measured OM3.

Is this sensible?

NZNOG mailing list