Fibre cable specs?

[Joe Harman]

Sun supports the 62.5 on the SSA up to the 500 meter point...

		Joe


<jh> From Stuart.Remphrey@Aus Mon Mar  2 22:36:06 1998
<jh> Date: Tue, 3 Mar 1998 16:28:19 +1000 (EST)
<jh> From: Stuart Remphrey - SMCC SE - Qld Australia <Stuart.Remphrey@Aus>
<jh> Subject: Re: Fibre cable specs?
<jh> To: "Ejvind Kristian (KEJA)" <kristian.ejvind@inv.spp.se>
<jh> Cc: ssa-managers@Eng.Auburn.EDU
<jh> MIME-Version: 1.0
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<jh> 
<jh> Kristian,
<jh> 
<jh> >   Is it possible for us to use the 62.5/125 cable instead
<jh> > of 50/125 without any problems?
<jh> 
<jh> Yes, maximum cable length between E4000 and SSA drops
<jh> from 2 km to 500 m so your 300 m length should be okay.
<jh> (according to FC standard)
<jh> 
<jh> Note you can't [easily or supportably] share this with
<jh> anything else (FDDI for example).
<jh> 
<jh> >   We asked our local Sun dealer and were told (by someone
<jh> > who apparently just reached out for his binder with specs
<jh> > and read) that "No, Sun only supports 50/125".
<jh> 
<jh> May or may not be true, I can't personally remember whether
<jh> this was ever tested internally or not -- if not, then Sun
<jh> wouldn't support it, even if it appeared to work at first.
<jh> (after all, lots of things appear to work at first, and
<jh> there's enough work supporting stuff we "know" works let
<jh> alone stuff that just "should work"  :-)
<jh> 
<jh> Sorry I'm not more specific on that last point!  Perhaps
<jh> someone in the storage group is listening.
<jh> 
<jh> By the way, the length limits are more strict on A5000's
<jh> at the higher FC/AL speed -- 500 m for 50 micron, and from
<jh> memory about 125 m with 62.5 micron.
<jh> 
<jh> HTH,
<jh> 
<jh> Stuart.
<jh> 
<jh> 
<jh> 
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<jh>  ,-_|\   Sun Microsystems Australia   Stuart Remphrey, Systems Engineer
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<jh> 
<jh>