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From: lezo@syma.sussex.ac.uk (Lez Oxley)
Newsgroups: comp.periphs.scsi,comp.sys.sequent
Subject: Exabyte Data Compression Devices
Keywords: Exabyte Compression
Message-ID: <4501@syma.sussex.ac.uk>
Date: 15 Feb 91 14:14:10 GMT
Organization: University of Sussex
Lines: 29


Data Compression Devices are now available for 8mm, 4mm and .5 inch SCSI
Tape Drives to enhance data transfer rates and to increase tape capacity
up to 4 times.  Typically, it is claimed that an Exabyte cartridge could
now hold up to 6.6 gigabytes of data.

Digidata market a model 4000 (tm) data compressor and Peripheral Vision
Corporation market a 4Sight (tm) Data Compression module. There are
other products on the market as well.

Has anyone out there in netland got any experience of these kinds of
devices? How do their claims bear up in practice? How reliable are these
devices? Has an industry 'compression' standard emerged yet? If so what
devices should one go for? Or is it best to wait awhile until this
(new?) technology is proven?

We have a Sequent S27 and Sequent Exabyte and are interested increasing
our backup capability.

Are Sequent doing any work in this area that they can tell us about?
What kind of device will they be supporting in future to cope with the
backing up of large databases?


-- 
Lez Oxley, Administration, University of Sussex, Brighton, BN1 9RH, UK
Tel: +44 273 606755 x3808 Fax: +44 273 678335 JANET: lezo@uk.ac.sussex.syma
ARPA: lezo%syma.sussex.ac.uk@nsfnet-relay.ac.uk
BITNET: lezo@syma.sussex.ac.uk      UUCP: lezo@syma.uucp


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