1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Single 2 TB drive - WD20EADS

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by hoyty76, Dec 7, 2008.

  1. Feb 3, 2009 #61 of 232
    t_h

    t_h Icon

    819
    1
    Mar 7, 2008
    Thats a greenpower 5400 rpm drive that uses AV firmware.

    Directv does not use the greenpower AV series, they use the 7200 rpm WD AV drives. So far those only go up to 500MB.


    Only thing I can tell you to expect with the 2TB version is that since it may have more platters and heads, it may throw off a bit more heat, possibly a little more vibration, and maybe a little more noise than the 1tb model. The original greenpower used 4 250GB platters, a subsequent upgrade changed it to 3 x 333. This one has 4 x 500.
     
  2. Feb 3, 2009 #62 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    Well WD says it develops less heat so I am confused.
     
  3. Feb 3, 2009 #63 of 232
    Steve

    Steve Well-Known Member

    23,041
    148
    Aug 22, 2006
    Lower...
    Except for a couple of more watts power consumption, looks the 2TB drive is essentially the same as the rest of the line, including noise levels. Specs here. /steve
     
  4. Feb 3, 2009 #64 of 232
    galtsfan

    galtsfan Cool Member

    16
    0
    Jul 30, 2008
    [QUOTEt_h;1984960]Thats a greenpower 5400 rpm drive that uses AV firmware.
    The draw back to 5400 RPM would be?

    The obvious advantage would be. Less heat! Less noise!
     
  5. Feb 3, 2009 #65 of 232
    t_h

    t_h Icon

    819
    1
    Mar 7, 2008
    Steve - the one item I think may differ is temps, but I dont think it'll be that much. And it'd only be different if you compared the 4 platter 2gb with a 3 platter 1tb. Much of a drives temperature output is derived from platter rotational friction. At the same speeds and components, a drive with more platters will run hotter than a drive with less. Not sure it'd be enough to make a big diff, but a 3 platter 1TB drive might work well with a particular passive cooling enclosure while a 4 platter 1TB or 2TB might run a little warmer. Either way, I doubt it'd make a huge difference unless you were running a passive cooled enclosure in an enclosed space.

    Asked and answered. Read above.

    And lower performance. The only thing we havent ascertained is whether that matters. That the manufacturers dont use them and the moderators of this forum arent recommending them is rather telling.

    Looking at these charts:

    http://www.tomshardware.com/reviews/wd-caviar-gp,1703-6.html

    I'd consider the load of an HR to be more like a server than a desktop computer. Perfectly arguable. But what this illustrates is that you're giving up a good degree of performance for the lower heat and noise.

    And there are a fair number of disk drives that dont have the performance penalty, still use a low amount of juice, and throw a small amount of heat. Do note that you're looking at a few degrees of temp and difference of about a buck per year of electricity per drive.

    Trust me, I was a believer in this sort of drive for this sort of application up until a few months ago. I didnt think performance mattered in a DVR, and for one that records one or two streams and plays back one and thats that, I dont think it does.

    I think it matters for some applications in a device that is recording up to 3 streams, playing back a couple, doing VOD, and a bunch of other stuff all at the same time. Its not straight line performance, its throttle response and turning ability. Fast rotational speed and a well tuned segmented cache give you the latter.

    Plus I havent heard a rational argument yet as to why vendors like tivo and directv will spend an extra $2-5 on a disk drive they dont need while they're concurrently trying to squeeze a buck a box out of manufacturing costs.
     
  6. Feb 3, 2009 #66 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    Well, I am happy with the WD10EADS and I will be happy to post the results positive or negative about this NEW WD20EADS DRIVE!!!
     
  7. Feb 3, 2009 #67 of 232
    MountainMan10

    MountainMan10 Icon

    607
    0
    Jan 30, 2008
    A 5400 RPM SATA drive is faster than USB 2.0.
    USB 2.0 is about 400mb (someone provide the exact value if it matters)
    Assume the data streams are 40mb (they are less, much less)
    4 concurrent streams = max 160mb.

    There is a thread with a poll to determine if the slow DVR response is related to external or internal hard drive. The poll shows it is not. It is HR model specific not hard drive specific.
     
  8. Feb 4, 2009 #68 of 232
    t_h

    t_h Icon

    819
    1
    Mar 7, 2008
    The issue has nothing to do with straight line performance. Of course the slowest disk drive on the planet can outdo a single stream or four of them measured linearly.

    But the HR is a computer. Its reading from the drive at full drive speed, all the time, for everything it does.

    Doing 6, 8 or 12 things at once doesnt correlate to single threaded performance.

    Never saw that poll you mention, got a link? Note that different disk drives were used throughout the production of the HR's. A non AV WD drive at one size was used for the HR20-100's. WD AV drives of three different sizes were used for others. All 7200rpm.

    I cant provide any hard numbers here, because nothing is published (or likely to be published) about how the HR works with the drive and what the data structures look like. Just reading the tea leaves. Manufacturers using 7200rpm AV disk drives. Moderators quietly recommending them and then not explaining why. Some people have problems. Some dont. Some receivers have problems. Some dont.

    I'll read the tea leaves a little further. Directv plays it pretty close to the vest. Its rare for the people "in the know" here to show any cards related to futures and inner workings of the product. Several times a couple of the mods have said "Use these particular models of external, 7200rpm, AV/DVR type disk drives" and then been unresponsive to questions why.

    I'm thinking directv told them "put something out their recommending use of these drives, because those are the ones we'll support and the ones people should use to avoid problems".

    Then everybody can take their chances with brand X, and if it stops working they can say "Hey, we told ya..."

    Too much tin foil? ;)
     
  9. Feb 5, 2009 #69 of 232
    DanoP

    DanoP Legend

    193
    3
    Sep 28, 2006
    WD10EADS here also....up and running for the past two days with no issues. It's quiet and from what I've read, runs relatively cool and pulls only a three to five watts of juice from your walls. Right now it's in the MX-1....wondering if it would be OK to stick it in an unfanned enclosure should the Antec become noisy (or simply remove the top and disconnect the fan from the Antec).
     
  10. Feb 5, 2009 #70 of 232
    hdtvfan0001

    hdtvfan0001 Well-Known Member

    32,456
    258
    Jul 28, 2004
    OK...where's the report...where's the photos.....it's Thursday past Noon (EST)..........slacker....:lol::lol::lol:
     
  11. Feb 5, 2009 #71 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    UPS hasn't arrived yet. They normally come around 3:00 P.M.
     
  12. Feb 5, 2009 #72 of 232
    Tom Robertson

    Tom Robertson Lifetime Achiever DBSTalk Club

    21,331
    246
    Nov 15, 2005
    You didn't think about us and get the overnight, 5am delivery service? We're dieing here waiting for information and you skimp on a few pennies for shipping? :lol:
     
  13. Feb 5, 2009 #73 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    Well, I did pay extra for Rush Shipping which gets it out the door faster and would have had it Overnighted if I had realized it was coming from California.

    Oh well, it will be here soon and I will sip a Glass Of Gewurztraminer from the South African Robertson Winery as I go about installing it in my "OWNED" HR23-700 which I paid an arm and a leg for but I also had to have it.

    Won't be long now!!! :joy:
     
  14. Feb 5, 2009 #74 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    It's HERE!!! Got to go Install the WD20EADS!!! :hurah:
     
  15. Feb 5, 2009 #75 of 232
    Tom Robertson

    Tom Robertson Lifetime Achiever DBSTalk Club

    21,331
    246
    Nov 15, 2005
    It's been 4 hours, 54 minutes! Where's the pix! Where's the never-ending space available bar? And where's the open bar for that matter? :)
     
  16. Feb 5, 2009 #76 of 232
    t_h

    t_h Icon

    819
    1
    Mar 7, 2008
    Pffft...I started a format/bad sector scan on a 1TB drive at 9 this morning and its still only 92% done. I guess I should have fished it out of the USB case and stuck it in the desktop.
     
  17. Feb 6, 2009 #77 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    I drank up the Open Bar so now it is Closed.

    That is why I couldn't install it yesterday and today is the day!!!
     
  18. Feb 6, 2009 #78 of 232
    hdtvfan0001

    hdtvfan0001 Well-Known Member

    32,456
    258
    Jul 28, 2004
    No kidding.....still no report now 14 hours later.....maybe we need a new anticipation (of the installed 2TB drive) thread.....Noooooooooooooooooo!! :lol:
     
  19. Feb 6, 2009 #79 of 232
    Richierich

    Richierich Hall Of Fame

    8,489
    7
    Jan 10, 2008
    Well, the Drive is Installed and Ready To Go!!!

    I think I might have enough room to record all of my Sports Programming for a while with a little left over for Jay Leno, and of course The Food Channel with shows like Giada's Weekend Getaways, Giada etc. etc. etc.
     
  20. Feb 6, 2009 #80 of 232
    Steve

    Steve Well-Known Member

    23,041
    148
    Aug 22, 2006
    Lower...
    As Homer would say, "Hmmmmm. Giada" :) /s
     

Share This Page