Question about External HD
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From: isw on 24 Jan 2010 13:26 In article <me-814513.13084424012010(a)news.supernews.com>, Dan <me(a)here.net> wrote: > In article > <nospam.m-m-1733C6.12571624012010(a)cpe-76-190-186-198.neo.res.rr.com>, > M-M <nospam.m-m(a)ny.more> wrote: > > > OK then, but is there any advantage to purchasing a 7200 rpm drive to > > use in a USB enclosure? Will it back up faster (than a 5400) if the > > internal is 5400? Or is the chain only as strong as the weakest link, as > > they say? > > Probably no advantage, or maybe very little. > > In any case, I would buy the 7200 rpm drive anyways. You might want to > use the drive later internally in some machine, or in a faster firewire > enclosure, etc. where the speed WILL be used. 7200 rpm is just a > better buy. > > I wouldn't buy a 5400 rpm drive for any reason these days. The > difference between 5400 and 7200 in a laptop is very noticeable! In battery life, too. Besides, a higher density 5400 RPM drive can deliver data as fast as a lower density 7200. There are lots of variables at play here. Isaac
From: George Kerby on 24 Jan 2010 13:31 On 1/24/10 12:08 PM, in article me-814513.13084424012010(a)news.supernews.com, "Dan" <me(a)here.net> wrote: > In article > <nospam.m-m-1733C6.12571624012010(a)cpe-76-190-186-198.neo.res.rr.com>, > M-M <nospam.m-m(a)ny.more> wrote: > >> OK then, but is there any advantage to purchasing a 7200 rpm drive to >> use in a USB enclosure? Will it back up faster (than a 5400) if the >> internal is 5400? Or is the chain only as strong as the weakest link, as >> they say? > > Probably no advantage, or maybe very little. > > In any case, I would buy the 7200 rpm drive anyways. You might want to > use the drive later internally in some machine, or in a faster firewire > enclosure, etc. where the speed WILL be used. 7200 rpm is just a > better buy. > > I wouldn't buy a 5400 rpm drive for any reason these days. The > difference between 5400 and 7200 in a laptop is very noticeable! I would say so. Unless battery depletion might be a factor.
From: Erik Richard Sørensen on 24 Jan 2010 12:36 M-M wrote: > Jolly Roger <jollyroger(a)pobox.com> wrote: >> M-M <nospam.m-m(a)ny.more> wrote: >>> I have a 2.5" SATA enclosure and want to get a HD for it. >> What make and model enclosure? > > This basic one: > > http://www.vantecusa.com/front/product/view_detail/272 > >>> Will a 7200 rpm HD matter if the drive is used as a startup disk, or >>> does the USB connection cut down the speed so there is no advantage? >> I shutter to think of the horrible performance you'll get form a USB >> connection for a startup drive. Yuck! Why not use an internal drive for >> the startup drive? > > It's for my MacBook Pro. How would an external 7200 USB boot drive > compare with an internal 5400? In any case an external USB drive will be slower than the internal - no matter which speed the harddisk is. If you want something near same speed as the internal, you should bay the extra money for an external Firewire enclosure instead and then put in a 7200rpm disk. Now nearly 6 years ago I bought a 2,5" Manhattan FW400 enclosure and mounted a WD Scorpio disk. This disk is still just doing the job - both as bootable, backup or just for normal storage. >>> Finally, as far as reliability is concerned, I believe >>> Hitachi > Seagate > WD. True? >> In my book it's Seagate > all others. Of course that's just my opinion, >> and you know what they say about opinions. : ) > > I have been reading that the Seagate 7200 2.5" drives have some serious > reliability issues that may or not have been fixed with a firmware > update: > > http://www.amazon.com/Seagate-Barracuda-ST3320613AS-Bare-Frustration-Free > -Packaging/product-reviews/B001VKYA5Y/ref=cm_cr_pr_hist_1?ie=UTF8&showVie > wpoints=0&filterBy=addOneStar There have been and still are many problems with the 2,5" Seagate drives. Some are definitely firmware problems, some are real hardware problems like a too 'thin' construction, - while on the other hand, the 3,5" Seagate Barracudas are among the best. - You can say that the 'Seagate situation' is the opposite of the 'IBM/Hitachi situation', where the 2.5" IBM/Hitachi TravelStar always have b een among the best, the 3,5" disks are among the worst. So as already written buy a WD Scorpio or TravelStar Cheers, Erik Richard -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Erik Richard Sørensen, Member of ADC, <mac-manNOSP(a)Mstofanet.dk> NisusWriter - The Future In Multilingual Text Processing - www.nisus.com OpenOffice.org - The Modern Productivity Solution - www.openoffice.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: Erik Richard Sørensen on 24 Jan 2010 11:17 M-M wrote: > I have a 2.5" SATA enclosure and want to get a HD for it. > > Will a 7200 rpm HD matter if the drive is used as a startup disk, or > does the USB connection cut down the speed so there is no advantage? If your Mac is able to boot from an USB drive, yes, it will definitely be faster. Though I'd say that a Firewire enclosure would be both faster and more stable than USB. NOTE. You may have to use either an external power supply or 2x USB cables - one for the data transfer and one for power connection. > Will a 7200 rpm HD in an aluminum enclosure get very hot? > > Or should I stick with a 5400 rpm? Not much. Your enclosure is metal and will better remove any heath than a plastic box. > Finally, as far as reliability is concerned, I believe > Hitachi > Seagate > WD. True? Depending on model and size, I'd prefer either Hitachi TravelStar or one of the new WD Scorpio 'Green Series'. - As far as it goes for now, I donot trust the 2,5" Seagate Momentus disks yet. You can be lucky that it keeps working and working for years, but you can also be that unlucky that it breaks within few weeks or months. So my choice would be either Hitachi or WD. Cheers, Erik Richard -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Erik Richard Sørensen, Member of ADC, <mac-manNOSP(a)Mstofanet.dk> NisusWriter - The Future In Multilingual Text Processing - www.nisus.com OpenOffice.org - The Modern Productivity Solution - www.openoffice.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: Mike Rosenberg on 24 Jan 2010 14:40
Erik Richard S�rensen <NOSPAM(a)NOSPAM.dk> wrote: > If you want something near same > speed as the internal, you should bay the extra money for an external > Firewire enclosure instead and then put in a 7200rpm disk. And just how do you know he has a Firewire port to connect to the external drive? -- My latest dance performance <http://www.youtube.com/watch?v=I_9pudbFisE> Mac and geek T-shirts & gifts <http://designsbymike.net/shop/mac.cgi> Prius shirts/bumper stickers <http://designsbymike.net/shop/prius.cgi> |