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Groups > comp.sys.mac.system > #58986
| From | billy@MIX.COM |
|---|---|
| Newsgroups | comp.sys.mac.system |
| Subject | Re: [NEWS} Be a Mac OS X Beta tester |
| Date | 2014-04-28 18:27 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <ljm6ja$pfk$1@reader2.panix.com> (permalink) |
| References | (1 earlier) <mcmurtrie-AA3673.21072423042014@c-61-68-245-199.per.connect.net.au> <ljb7mf$i2a$1@reader2.panix.com> <ljcsgt$chc$1@dont-email.me> <ljdqls$8kb$1@reader2.panix.com> <ljef9r$9fg$1@dont-email.me> |
J Burns <burns4@nowhere.com> writes:
> <http://www.quantum.com.pl/baza/pdf/6b4c8ae0f8fe4a4d48404a26c43ce99147390b99.pdf>
>
> Here's a PDF from Portwell. I don't see a date. They make industrial
> monitors with LED, CCFL, and FFL backlights. Their LEDs have a MTBF of
> 20,000-50,000 hours, CCFLs 50,000 hours, and FFLs 100,000 hours.
Interesting reading, thanks.
> I've read that CCFLs dim with age, so sleeping would preserve brightness.
I wish I'd have measured mine when they were new. I have noticed some
(not much) dimming, and they are now a bit slower to come up to "full"
level.
> http://www.tomshardware.com/reviews/hdd-reliability-storelab,2681.html
> Here's a study of statistics from Storelab, a data-recovery company.
> Compared to market share, the number of Hitachis they received was very
> low, and all had been dropped. The average age was 5 years.
Tom's being very careful not to step on anyone's toes, but, regardless
of the small sample size, I think these data are useful. Particularly
the obserations about <1GB (or, 1GB and up) drives, which match my own
experience.
> The article doesn't prove one brand is better, but some models have
> problems. The article suggests to me that perhaps neither run time nor
> sleep/wake cycles have much effect on failure rates.
Evidentally not with today's drives, as compared to mechanical problems.
> Years ago, I downloaded Hitachi's 188-page manual for the drive I
> installed in my Mini. A computer could allow the drive to use several
> stages of readiness.
>
> Immediately after action, it would be at Performance Idle (2W). It
> could step down to Active Idle (0.8W), with the heads parked over the
> platters and a response time of 20ms.
>
> At Low Power Idle (0.6W), the heads would be unloaded and parked.
> Response time was 300ms.
>
> At Standby (0.2W), the motor would be off. It would take typically 2.5s
> and as long as 9.5s to come to idle. Standby wasn't sleep.
I haven't looked at what other makers drives can do, but I'm sure this
appealed to Apple.
Billy Y..
--
sub #'9+1 ,r0 ; convert ascii byte
add #9.+1 ,r0 ; to an integer
bcc 20$ ; not a number
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[NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-04-23 09:14 +1200
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-22 22:44 +0000
Re: [NEWS} Be a Mac OS X Beta tester Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-22 19:17 -0400
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-22 23:21 +0000
Re: [NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-04-23 19:17 +1200
Re: [NEWS} Be a Mac OS X Beta tester Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-23 12:49 +0000
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-23 14:50 +0000
Re: [NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-04-24 09:22 +1200
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-24 02:22 +0000
Re: [NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-04-24 16:37 +1200
Re: [NEWS} Be a Mac OS X Beta tester Invid Fan <invid@loclanet.com> - 2014-04-24 13:19 -0400
Re: [NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-04-25 09:17 +1200
Re: [NEWS} Be a Mac OS X Beta tester Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2014-04-23 21:07 -0700
Re: [NEWS} Be a Mac OS X Beta tester Leonard Blaisdell <leoblaisdell@sbcglobal.net> - 2014-04-23 23:41 -0700
Re: [NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-04-24 19:13 +1200
Re: [NEWS} Be a Mac OS X Beta tester Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-24 20:55 +0000
Re: [NEWS} Be a Mac OS X Beta tester nospam <nospam@nospam.invalid> - 2014-04-24 17:09 -0400
Re: [NEWS} Be a Mac OS X Beta tester android <here@there.was> - 2014-04-24 23:19 +0200
Re: [NEWS} Be a Mac OS X Beta tester Michelle Steiner <michelle@michelle.org> - 2014-04-24 21:03 -0700
Re: [NEWS} Be a Mac OS X Beta tester Paul Sture <nospam@sture.ch> - 2014-05-10 19:20 +0200
Re: [NEWS} Be a Mac OS X Beta tester Your Name <YourName@YourISP.com> - 2014-05-11 10:23 +1200
Re: [NEWS} Be a Mac OS X Beta tester Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-05-11 15:36 +0000
Re: [NEWS} Be a Mac OS X Beta tester Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2014-04-24 21:11 -0700
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-24 14:39 +0000
Re: [NEWS} Be a Mac OS X Beta tester J Burns <burns4@nowhere.com> - 2014-04-25 01:40 -0400
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-25 14:15 +0000
Re: [NEWS} Be a Mac OS X Beta tester J Burns <burns4@nowhere.com> - 2014-04-25 16:07 -0400
Re: [NEWS} Be a Mac OS X Beta tester Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-27 21:40 +0000
Re: [NEWS} Be a Mac OS X Beta tester J Burns <burns4@nowhere.com> - 2014-04-27 20:46 -0400
Re: [NEWS} Be a Mac OS X Beta tester billy@MIX.COM - 2014-04-28 18:27 +0000
Re: [NEWS} Be a Mac OS X Beta tester J Burns <burns4@nowhere.com> - 2014-04-24 23:02 -0400
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