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Technology Stocks : EMC How high can it go? -- Ignore unavailable to you. Want to Upgrade?

To: Steven who wrote (3328)	12/5/1998 12:23:00 PM
From: George Dawson	Respond to of 17183

Steven, Here is a link to the Fibre Channel Association's explanation of SANs (Storage Area Networks): fibrechannel.com The acronym SAN is also used for other technologies such as System Area Network (the original use by Tandem Computers before they were acquired by Compaq) and Server Area Network. RAID is an acronym for "redundant array of inexpensive disks". The original concept was to improve the performance of storage systems by using disk arrays, where disks have redundant data. That way if a disk fails or is not available another disk can be accessed. There are different levels of RAID depending on the approach to build in redundancy. Here is a link to some definitions about RAID from the RAID Advisory Board (RAB): raid-advisory.com This is a link to Ciprico's RAID technical brief: ciprico.com George D.

To: Steven who wrote (3328)	12/7/1998 1:32:00 PM
From: Harlock	Respond to of 17183

Hello... SAN, Storage Area Network is a networked group of storage servers. Because of its speed Fibre Channel will be used widely. RAID, Redundant Array of Inexpensive Disks is a set of standards for insuring data survivability in the event of system failure. This includes strategies like shadowing and mirroring. The concepts are somewhat related because both require a high bandwidth fault tolerant way of connecting storage units. It may be that the concept of SANs grow out of the technology developed to implement RAID. EMC looks like the dominant player in SANs !