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Article #68837Re: Backing up to DC-ROM? Help!
From: J A F Bradbury
Date: Wed, 24 Apr 1996 00:00
Date: Wed, 24 Apr 1996 00:00
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1844 bytes
I wouldn't use it as principal backup medium. Use something like DAT as the primary, then CD-R for archivable & distributable material. - DAT can run happily unattended & fast; HP-C1533A is a fast ~45MB. CD-R Probs? o You need 650MB /contiguous/ disk space free :) o CD-Rs have a nasty habit of poor SCSI disconnect/connect, which when doing concurrent TRs can make a very fast h/d, not quite so fast. ( Try SCSI Bench, h/d alone, then with a CD/PD or CD-R ): Putting a CD-R on it's own i/f solves this. o CD-Rs aren't as robust/long-lived as their pressed variety. o Writing them is tedious, a verify pass is a must. Mistakes are tedious & the cost does mount. o Economically CD-R is a write-once miserly 650MB, with multi-session carrying a ~50MB overhead. One 90m DAT tape: 4000MB rewritable @7ukp. For security, look at PD drives, or the "new" IBM 650MB M.O. drive, or the new large and "interestingly priced" M.O. drives. The decision does come down to what data is going on the CD-R, how often it is accessed or distributed. CD-R *IS* online, DAT isn't :( The decision is likely to be greyish :) -- Julian AF Bradbury Ergonomist; Human Factors & IT Specialist Ergonomics, VDU & IT FAQs http://webzone1.co.uk/www/3b
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 1036bc,831bc7a4ee5c400d X-Google-Attributes: gid1036bc,public From: J A F Bradbury <Julian@xabcs.demon.co.uk> Subject: Re: Backing up to DC-ROM? Help! Date: 1996/04/24 Message-ID: <709668410wnr@xabcs.demon.co.uk> X-Deja-AN: 151311668 x-nntp-posting-host: xabcs.demon.co.uk references: <830255684snz@inf-eden.demon.co.uk> <830262961snz@lgab.demon.co.uk> x-mail2news-path: xabcs.demon.co.uk organization: ErgonITe reply-to: Julian@xabcs.demon.co.uk newsgroups: demon.tech.pc