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Technology Stocks : MTIC - Is this the next EMC? -- Ignore unavailable to you. Want to Upgrade?

To: Rick Kupcunas who wrote (1332)	2/2/1998 12:51:00 AM
From: David A. Lethe	Read Replies (2) \| Respond to of 3748

Rick: You have your facts off on bandwidth. The theoretical limits are as follows, all in megaBYTES/second. "Normal" Fast/wide SCSI: 20 (SCSI-2 serial) UltraSCSI: 40 (SCSI-3 parallel) SSA: 80 (SCSI-3 serial) fibre channel: 100 (SCSI-3 serial more correctly called FC-AL) Emerging standards: will be out mid '98 LVD SCSI: 80 MB/sec SSA-160: 160 MB/sec What is interesting to note is all of these interfaces have different properties and strengths/weaknesses depending on the type of I/O desired. There is also a wide range of overhead, for example, I know of FC-AL based subsytems attached to HP-UX (UNIX) servers that are doing a whopping 30 MB/second when the theoretical is 100MB/sec! I guess the moral here is not to get hung up on speeds and feeds. All the vendors quote best-case scenarios that are impossible to obtain in the real-world with real data. Most of the decision makers know this, but very few of the investors do. MTIC is just as misleading as all of the others if you look at their marketing literature, or web site. David