Nagered hard drive;'(..
in [Computer]
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From: Bob Eager on 24 Jun 2010 17:35 On Thu, 24 Jun 2010 21:00:52 +0000, Huge wrote: > On 2010-06-24, Andy Champ <no.way(a)nospam.invalid> wrote: >> Roland Perry wrote: >>> In message <hvvpji$gsj$2(a)news.eternal-september.org>, at 14:20:35 on >>> Thu, 24 Jun 2010, Jules Richardson <jules.richardsonnewsmoo(a)gmail.com> >>> remarked: >>>> (and remember the days when you had to reformat the drive if you >>>> changed its orientation, as otherwise it'd start spewing out errors >>>> all over the place? :-) >>> >>> No, I don't remember that, and I go back all the way to 1980 and >>> drives that were 10MB per platter. >> >> So it's not just me then? > > Hell, no. > > I still have some 5 track paper tape ... I used to have to USE 5 track paper tape. -- Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning protection* - a w_tom conductor
From: Bob Eager on 24 Jun 2010 17:37 On Thu, 24 Jun 2010 21:00:23 +0000, Huge wrote: > On 2010-06-24, Roland Perry <roland(a)perry.co.uk> wrote: >> In message <hvvpji$gsj$2(a)news.eternal-september.org>, at 14:20:35 on >> Thu, 24 Jun 2010, Jules Richardson <jules.richardsonnewsmoo(a)gmail.com> >> remarked: >>>(and remember the days when you had to reformat the drive if you >>>changed its orientation, as otherwise it'd start spewing out errors all >>>over the place? :-) >> >> No, I don't remember that, and I go back all the way to 1980 > > Pah. Newbie. > >> and drives >> that were 10MB per platter. > > Blimey. Huge capacity. There's a platter from a Xerox system hanging on > my study wall. IIRC, the drive was 20Mb and had 5 platters. I wish I > could remember what the capacity of the DEDS drive on the ICL 1900 > series I learned RPG2 (spit) on was. About 5 Mb (?), with two platters > that had to be exchanged seperately, but in pairs, on a horizontal > spindle inside a *huge* grey crackle-finish enclosure. > > Now I have 3.5 Tb of disk in mys study ... The disks on the ICL 4130 at Kent were initially 2MB, latre upgrade to 4MB. Alan Ibbetson and I hand punched a paper tape to patch the operating system... Think they were four platters, so 0.66MB per platter... -- Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning protection* - a w_tom conductor
From: Andy Champ on 24 Jun 2010 17:41 dennis(a)home wrote: > > When I started they were in the 5 MB range and were 14" dia, you built > controllers with RLL compression and stuff like that. > Typically they would occupy a couple of MB1 sized cards or a bit more. > RLL Compression? Pray tell me more. Andy
From: Andy Champ on 24 Jun 2010 17:43 dennis(a)home wrote: > > Most drives rotated quite slowly and it took a lot longer to read the > data from a single drive than an array, the latency was the same. > I'd argue that drives rotate more slowly now. No, really. They've gone from 3600 to 10000 RPM - but the capacity has grown several orders of magnitude, so the speed is much lower in proportion. Andy
From: Bob Eager on 24 Jun 2010 18:01
On Thu, 24 Jun 2010 22:50:20 +0100, Tim Streater wrote: > In article <88i1c0FtvfU27(a)mid.individual.net>, > Bob Eager <rde42(a)spamcop.net> wrote: > >> On Thu, 24 Jun 2010 22:18:51 +0100, Tim Ward wrote: >> >> > "Tim Streater" <timstreater(a)waitrose.com> wrote in message >> > news:timstreater-14614B.22140424062010(a)news.individual.net... >> >> >> >> Ah, now that's going back a bit. I haven't seen that since I worked >> >> on an Elliott 803. >> > >> > World's best tape readers ... 1,000 cps and could stop between two >> > characters, quite often without even tearing the tape. >> >> Yes, I remember ours. There's a working one at Bletchley Park. > > I must see that next time I'm there. It's on the 803, strangely enough! -- Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning protection* - a w_tom conductor |