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Technology Stocks : Tandem's Prospects
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To: DeadHead who wrote (63)5/22/1997 8:45:00 PM
From: Dan Spillane   of 99
 
Tandem ServerNet is apparently not a LAN tech, but a SAN (System Area Network) tech. Here's my analysis of the differences...any comments?

1) A LAN is meant to interface to the outside world; i.e., other LANs and WANs.
2) A SAN is meant to effectively "extend the bus" across a number of machines (probably in a server closet). In this way, distributed processing is effected. Bye bye mainframe?
3) A SAN is not meant to directly connect to other LANs, WANs, or SANs -- there is no point in this. LAN and WAN connections are made to specific server resources via Ethernet or ATM connections, not via the SAN; i.e., the SAN is a special purpose fabric for close-knit machines, and exists solely to support distributed, fault-tolerant services.
4) A SAN would most naturally be embedded in an Ethernet or ATM LAN, to provide needed throughput to the Intranet and Internet.

Dan

You said:
"From what I can tell ServerNet requires a switch that controls the network traffic between the various nodes in the LAN."
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