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Re: [NEWS} Be a Mac OS X Beta tester

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On 4/25/14, 10:15 AM, billy@MIX.COM wrote:
> J Burns <burns4@nowhere.com> writes, quoting me:
>
>>> My systems, including the spinny disks, never sleep, heh.  I do let
>>> my older displays with fluorescent backlights sleep, but that's it.
>>>
>> My 19" fluorescent display uses 24W.  I wonder if fluorescent displays
>> are still sold. Some 19" LED displays advertise 18W typical, 25W
>> maximum.  I guess on maximum brightness, they would be about the same as
>> mine.
>
> I'm not worried about conserving energy (I'm told the electric bill
> where I work runs about US$500,000 a month, but I've never actually
> seen it), I'm concerned about burnouts (either lamps or inverters)
> in the displays.  In the world of TV program production it's quite
> common to just leave everything on, 24x7.  Some people think that
> helps the gear last longer.

<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.

I've read that CCFLs dim with age, so sleeping would preserve brightness.
>
>> I experimented with deselecting "Put hard drives to sleep when
>> possible." When I let my Mini time out and go to sleep, the wattage
>> dropped to 1.2 as before, and I couldn't hear a hum with a stethoscope.
>
> I've noticed the spinny drives Apple is curently shipping (Hitachi)
> are unusually quiet, and the sound they make when seeking doesn't
> scare me (quite the opposite, actually), either.
>

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.

Bad Seagates showed up at a rate 6 times higher.  The average age was 
1.5 years.  The most common problem was a firmware failure.

Western Digitals showed up at twice the rate of Hitachis.  Their average 
age was 1.5 years.  Their heads could overheat at only 45C.  Also, 
pressure on the case could shift the axle, damaging the platters.

Toshiba/Fujitsu appeared at 2.5 times the rate of Hitachi.  Their 
average age was 2 years.  The case could easily be deformed, allowing 
the lubricant to evaporate.

Samsungs also appeared at a rate 2.5 times higher than Hitachi.  The 
most common cause was head crashes.

Axle wedging was a common cause of failure.  The loss of lubricant in 
Toshiba/Fijitsus was one cause.  There's more risk with high-capacity 
drives because the axles carry more weight.

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.

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.

In a laptop, I imagine parking the heads at every chance could increase 
reliability.

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Thread

[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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