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  3. February 2004

Re: Max Devices on ethernet adapters

Andy,

FOr 80 PCs, dual GbE adaptors are overkill. I like duals but GbE units require dedicated IOPs adding even more cost. I have customers with i825 and heavy SQL loads that don't tax a 100 Mb card. I would Certainly do Dual 100Mb cards before I did a single GbE card. Even the printers aren't really gonna put a hurt on the network.

- Larry

Andy Nolen-Parkhouse wrote:

Pat,

What you are describing is actually rather common.  The high-volume printers
might be a little out of the ordinary.  What I would do with your
configuration is put a gigabit Ethernet card on the iSeries, five (or so)
switches with 100 meg ports.  Connect all switches and the server at gigabit
speeds.  That should handle everything you've described.  I would add a
second gigabit card to the iSeries and implement outbound load balancing,
but that would be more for redundancy than because the throughput could not
be handled.  Assuming that your pc's are using TN5250e the overall load
could be handled rather well.  If you put Domino on the iSeries or had a
requirement for frequent large file transfers, then the second card might be
required for throughput.

This is just an off-the-cuff estimate based upon what I've seen of similar
installations.

Regards,
Andy Nolen-Parkhouse







--
Larry Bolhuis IBM eServer Certified Systems Expert:
Vice President iSeries Technical Solutions V5R2
Arbor Solutions, Inc. iSeries LPAR Technical Solutions V5R2
1345 Monroe NW Suite 259 iSeries Linux Technical Solutions V5R2
Grand Rapids, MI 49505 iSeries Windows Integration Technical Solutions V5R2
IBM eServer Certified Systems Specialist
(616) 451-2500 iSeries System Administrator for OS/400 V5R2
(616) 451-2571 - Fax AS/400 RPG IV Developer
(616) 260-4746 - Cell iSeries System Command Operations V5R2




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