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To: Paul Engel who wrote (67396)	10/26/1998 1:35:00 PM
From: Scumbria	Read Replies (1) \| Respond to of 186894

Paul, Does anybody have any knowledge of what "equipment" the NYSE runs on ? I'm sure that NYSE does not use Intel/NT systems. No trading would ever get accomplished if they did. Scumbria

To: Paul Engel who wrote (67396)	10/26/1998 2:36:00 PM
From: JDN	Read Replies (2) \| Respond to of 186894

Dear Paul: I seem to remember that BAY NETWORKS built the system. Dont know for sure what computers are used though. JDN

To: Paul Engel who wrote (67396)	10/26/1998 3:00:00 PM
From: Tony Viola	Read Replies (2) \| Respond to of 186894

Paul, Re: "Does anybody have any knowledge of what "equipment" the NYSE runs on ? Last I heard it's a network of system 390s, Tandem "no-downs", aka Himalayas, and UNIX based (I've heard HP, would imagine also Sun, IBM). I'm sure there are tons of NT machines "hanging off" the main transaction computers. The outage could have been the network, that JDN said Bay might have built. The computers should have massive amounts of redundancy, from software domains to power supplies and disk drives, built in, don't know about the network. In fact, the Tandem Himalayas are up to 10-way, I think, with n+ at least one CPU redundancy, probably more like n+2 or 3. The computers and the network undoubtedly get their power from redundant UPS's, which should practically never fail. So, building power itself should be the first single point of failure in the whole system, again, not sure of the network. Wait a minute, a computer to I/O farm problem could take the whole thing down. Speculating too much here and certainly not getting anywhere. Oops, KCBS now reckoning this to what might happen in year 2000. Here comes the sky is falling stuff! I wonder if we'll ever find out the real story. Tony