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Technology Stocks : The New QLogic (ANCR) -- Ignore unavailable to you. Want to Upgrade?

To: George Dawson who wrote (20356)	1/23/1999 5:21:00 PM
From: KJ. Moy	Respond to of 29386

George, <<Do you see any advantages to using class 1 to and from the mainframe (over class 2)? The trade-off would be guaranteed uninterrupted delivery vs. additional set up time.>> No, I don't see the advantages in using class 1 in this situation. The advantage that class 1 service gain in set-up time saving is not enough to overtake what class 2/3 can offer even with interruptions. The reason being during the transmission of a 'unit of work' with class 1, no other transmission can take place to the same two nodes. Even the transmission times are small, (may be seconds), it is still inconceivable for other potential transmissions to sit in the queue for even seconds. We are talking about a large network with hundreds of nodes. These 'seconds' can add up in a hurry. We all know seconds are eternity in computer speed. I do see class 1 can offer advantage in 'intermix' mode, may be tape operations or LAN type applications such as the one in Japan. SAN with class 2/3 offers the holy grail now and the foreseeable future. The subject of class 1 service and intermix may be re-visited by FC vendors once they have gained a foot hold in this new paradigm shift. KJ