I haven't found a good up to date version of linux for Ultra Sparc.  Check out www.ultralinux.org.  I am running OpenBSD on my sparc5 (32-bit Sun4m) and I have Solaris 8 on my Ultra Enterprise II (64-bit Sun4u).  Linux used to run great on sparcs, but no one keeps a distribution up to date.  I was thinking about linux from scratch for my ultraII.  

Debian - no Sun4u version yet
Redhat - 6.2 was last version to support sparc
Mandrake - 7.1beta was last version 
Suse - 7.1 was last version (probally the most up-to-date)
Caldera - 2.2 was last version
Slackware - under heavy development!
NetBSD - 1.5.1 (current)
OpenBSD & FreBSD - no sun4u support

Next to Solaris, NetBSD is probally your best choice for a Netra, unless you want to really do it right and go with Linux From Scratch. http://www.linuxfromscratch.org/ 

Any reason you are looking at the Netra?  They are nice little servers, but what are you going to do with it?   I am betting that you can get a better 1U Athalon for less money with more compatability.  I love Sparcs (my first computer was a sparc), but they are really designed for specific purposes and with the power of modern x86 processors.....  


Dusty


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> 
> I'm thinking about buying one of these.
> http://www.sun.com/products-n-solutions/hw/networking/netrax/X1/specs.html
> 
> Anyone know anything about Sparc Linux?  Seeing that Red Hat dropped Sparc
> in their latest versions, I need recommendations of where to go.  I'm
> thinking Debian... but any suggestions?
> 
> 
> 
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