Going Green with Tivo? Powering down

Discussion in 'TiVo Coffee House - TiVo Discussion' started by cmaasfamily, Jan 29, 2008.

  1. HiDefGator

    HiDefGator New Member

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    That may have been true 10 years ago. All modern drives pull the head completely off the platters when they lose power. Doesn't matter where it is when the power goes.
     
  2. fallingwater

    fallingwater New Member

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    True. S3's 'Standby' doesn't do anything except play possom. S2's Standby at least acts like a DVR/TV switch.

    ReplayTV got Standby right;

    ReplayTV's Standby kills the recording buffer which otherwise can get quite long, while leaving recording functions unaltered. TiVo's buffer is so short that Standby would make little difference.

    IMHO, the reason that TiVo doesn't offer true Standby is Suggestions. I believe TiVo keeps track of and anonymously aggregates the thumb ratings associated with Suggestions and sells such statistics. Suggestion recording is already a user option; perhaps now is a good time for true Standby to be a user option?
     
  3. dylanemcgregor

    dylanemcgregor Well-Known Member TCF Club

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    Corner of...
    :up: +1 and all that...
     
  4. gonzotek

    gonzotek tivo_xml developer

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    Outside...
    Are your S3 and HD tuners free for late night recordings, or are they generally otherwise occupied? If they're free, you could do away with the gym tivo altogether and run a cable from one of the other two to the gym tv, and use a remote transceiver rig to control it from the gym (assuming of course no other household member would need the same machine at the same time). OR, you could keep the gym tivo and only turn it on long enough to MRV the shows from the S3 or HD. Just some food for thought. Either should buy back some more watt-hours for you.
     
  5. rainwater

    rainwater Active Member

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    TiVos are already designed to have low power consumption.
     
  6. ZeoTiVo

    ZeoTiVo I can't explain

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    yah - but then you have to deal with the carbon dioxide and methane produced while exercising vigorously :p

    it seems though that a real standby mode that spun down the hard drive would be just the thing for you. You can elect to have suggestions on or off as well to effect when the TiVo would need to wake up to record something
     
  7. mattack

    mattack Well-Known Member

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    Using 40 watts (or whatever) is not low -- which could be *a couple* to use just enough to turn on when scheduled recordings are about to record.
     
  8. rainwater

    rainwater Active Member

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    Try running a Windows Media Center then :)
     
  9. sathead

    sathead Member

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    It (my SA8300HD) wakes it self up, does it's recording chore, then goes back to sleep without any human involvement. If it needs to do a guide or maintenance update- it wakes up (usually midnight- sharp), does it's chores then goes back into hibernation when done- again, all unattended.
    Very efficient.


    BTW- drive spindown in the ReplayTV's existed only on the original Showstopper units. There was an un-documented back door "clawfoot portal" where you you could disable drive spindown if you desired. On later models 4000/5000 and 5500 series- the default was drive spinning 24/7/365- a hack still existed for spindown enable, but was non-functional. You could enable the spindown option via the "clawfoot portal"- but it did nothing on those models.
     
  10. acvthree

    acvthree Active Member

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    I think your view is pretty accurate. Wall warts alone...

    A study sponsored by the German Federal Environmental Agency (Umweltbundesamt) showed that leakage in German homes and offices cost over $2 billion annually. That comprises about 10 percent of total electricity consumption in Germany. The amount of energy wasted (20 terawatt-hours) is far more than the total power requirement of 14 terawatt-hours for the entire city of Berlin annually. Worse, total carbon dioxide emissions associated with this wasted energy are over 10 million metric tons.
     
  11. sathead

    sathead Member

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    The savings derived from “Energy Star” and “Green” electrical appliances can be considerable once you take your whole house, not just single appliances into account.

    Suppose you have three TiVo’s, and as we know they run at full power 24/7/365. We know they draw about 40 watts each. Combined, all three consume about 2.88kWh per day. Electricity is about $0.25 per kWh where I live. The three TiVo’s would cost me about $0.72 per day to run, which totals $262 per year!

    Now, suppose you have three Scientific Atlanta 8300HD DVR’s. We know they also draw about 40 watts each when active. When not active- they hibernate, my Kilowatt meter shows about 1 watt draw when the SA8300HD in is hibernation mode. Let’s say the SA8300HD is “on” in full power mode 6 hour per day and in hibernation mode the other 18 hrs. Combined, all three consume about 0.774 kWh per day. Electricity is about $0.25 per kWh where I live. The three SA8300HD’s would cost me about $0.193 per day to run, which totals $70 per year!

    I’d say there’s a substantial difference between spending $262 on electricity to run three TiVo’s for a year compared to $70 to run three Scientific Atlanta 8300HD DVR’s for a year.
     
  12. fallingwater

    fallingwater New Member

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    The above statement is not quite true. I just tested the 'Enable' and then 'Disable Disk Spindown' Clawfoot Portal commands using RTV4532 and both commands are perfectly functional. My RTV5040 is not currently connected so I can't test how its Spindown works.

    Scroll way down in the FAQs link below to explore how 'Disk Spindown' functions for RTV4XXX's and 5XXX's. (But notice that uncertainty still rules! :eek: )

    http://www.replayfaqs.com/4DCGI/Detail_FAQ_Display?ID=135

    RTV40XX's are identical to RTV45XX's except that 45XX's required service activation. RTV50XX's retained Commercial Advance while 55XX's dropped it; otherwise they're identical.

    The RTV50XX series is considered to be the high point of ReplayTV. It retained CA but employs a different method of setting recording priorities somewhat similiar to TiVo's.

    The earliest RTV20XX's (but not Showstoppers) strip out Macrovision completely, BTW.
     
  13. sathead

    sathead Member

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    I still have a functioning 5040 that my wife uses every day... the spindown does not work on that model Replay- 100% certain- I've tried it as recently as two months ago when I replaced it's original drive with a new Seagate DB35 series drive. I wish it did spindown.
    I sold my 4504 several years ago, but I do recall trying the spindown option when I first got it- I was never able to get it working on the 4504??


    Fallingwater- do you have a Kill-a-watt meter you could hook up to the Replay when it's in spindown mode? I'd love to see how low the power consumption goes.
     
  14. fallingwater

    fallingwater New Member

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    I thought that Disk Spindown might not work on RTV5XXX's after reading the FAQ so I set my 5040 up for test and can confirm that it doesn't! I've got several 4532's and it works on all. I wonder if the issue is being confused by some users inadvertantly entering "Disc Spindown" instead of "Disk Spindown"?

    ReplayTV made major changes when developing 5XXX. Most notably it wasn't compatible with 45XX for streaming and SonicBlue made its costly offer to swap one for the other if a user had one or more of each. The 5XXX retained CA but was otherwise greatly influenced by TiVo and even included an ergonomic remote reminiscent of Sony's TiVo. Evidently it lost the capability for Clawfoot Portal initiated disk spindown!

    I don't have a Kill-a-watt meter. I too am curious about power consumption in standby w/HDD spindown.
     
  15. fallingwater

    fallingwater New Member

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    I Googled Kill-a-watt meter and found the deal below. For $20 and free shipping it's worth getting so I ordered one.

    Will post in a week or so with the results!

    http://www.supermediastore.com/kilwateldet1.html
     
  16. sathead

    sathead Member

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    It's a very useful instrument. I've modified several common habbits since I got the kill-a- watt meter- including the running time of my pool pump, the off season usage of our "extra" refrigerator out in the shed, and air conditioner usage.

    Should be interesting to see the ReplayTV energy consumption figures with the disk spun down and while "awake".
     
  17. Adam1115

    Adam1115 Well-Known Member TCF Club

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    So is a lightbulb, but I still turn it off when I'm not using it...
     
  18. fallingwater

    fallingwater New Member

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    The 'Power Consumption?' thread now has complete figures for S3/HD TiVos. http://www.tivocommunity.com/tivo-vb/showthread.php?t=381090

    Using the Kill-A-Watt meter I just tested a ReplayTV 4532 with disk spindown enabled and a TiVo '540' S2 and got the following surprising results:

    RTV4532 33 watts when on and 26 watts when in Standby with disk at rest.

    TiVo's '540' S2 whether on or in Standby drew 18 watts.

    Both v/a (apparent power) reads were approx. half again as much. (Roughly, watts x 1.5 equaled v/a.)
     
  19. Adam1115

    Adam1115 Well-Known Member TCF Club

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  20. Adam1115

    Adam1115 Well-Known Member TCF Club

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    Denver ish
    .
     

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