The first hard drive we had a school was a Winchester for the BBC Micro network, it was a "full hight" 5.25" drive, and it had a capacity of 10 megabytes. By the time I installed servers when I was a BT Broadcast, server drive were "half hight" and in the 3" size, with capacities in single gigabytes.
I popped a terrabyte in a server a few weeks ago, bought from PC World (boo! hiss!) in the "half hight" 3" size. Whilst I have a laptop drive under one of my monitors that is smaller, most drives still are "half hight" 3". I hold that experience suggests that you can apply Moore's Law to hard drive capacity as well, and it seems reasonable that there will be no move from "half hight" 3" drives. Moore's law, in the basic form "double the stuff for the same price in 18 months" applies to hard drives, and it works with broadband and other communications speeds. The only thing it doesn't work for is data compression and broadcast networks. I'm sorry if you think this is a misapplication of Moore's Law, I was just trying to make a general point. 2009/9/3 Rhys Jones <r...@highfiddletea.co.uk> > Sorry, the Kryder's Law link should be: > http://www.mattscomputertrends.com/Kryder%27s.html > > 2009/9/3 Rhys Jones <r...@highfiddletea.co.uk>: > > Quite - I'm not aware that Moore said anything about the density of > > magnetic storage! Kryder's law is mentioned here: > > http://www.mattscomputertrends.com/harddrives.html > > > > Also, this is old but may be relevant (the projections don't seem to > > be more than an order of magnitude off the mark, if that): > > http://www.oblomovka.com/entries/2002/12/04#1039028640 > > > > Rhys > > > > 2009/9/3 Alex Mace <a...@hollytree.co.uk>: > >> Hmm, not sure it doesn't doesn't Moore's law actually say that the > density > >> of transistors will double every 18 months? > >> Alex > >> On 3 Sep 2009, at 09:08, Brian Butterworth wrote: > >> > >> Very nice. You could store 29 days of everything transitted on Freeview > (23 > >> after switchover). > >> Moore's law says you're going to get it in a 36TB in a single drive in > five > >> years though... > >> 2009/9/2 Ian Forrester <ian.forres...@bbc.co.uk> > >>> > >>> > http://blog.backblaze.com/2009/09/01/petabytes-on-a-budget-how-to-build- > >>> cheap-cloud-storage/ > >>> > >>> Found via Frank Wales, > >>> > >>> I'm amazed, but this amazed me when I first saw it too - > >>> http://www.youtube.com/watch?v=96dWOEa4Djs > >>> > >>> Secret[] Private[] Public[x] > >>> > >>> Ian Forrester > >>> Senior Backstage Producer, BBC R&D > >>> 01612444063 | 07711913293 > >>> ian.forres...@bbc.co.uk > >>> > >>> - > >>> Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, > please > >>> visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. > >>> Unofficial list archive: > >>> http://www.mail-archive.com/backstage@lists.bbc.co.uk/ > >> > >> > >> > >> -- > >> > >> Brian Butterworth > >> > >> follow me on twitter: http://twitter.com/briantist > >> web: http://www.ukfree.tv - independent digital television and > switchover > >> advice, since 2002 > >> > >> > > > > - > Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please > visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. > Unofficial list archive: > http://www.mail-archive.com/backstage@lists.bbc.co.uk/ > -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002
