[mythtv-users] warning for anyone with western digital green drives

Michael T. Dean mtdean at thirdcontact.com
Thu Jan 5 20:53:28 UTC 2012

On 01/05/2012 03:46 PM, Michael T. Dean wrote:
> On 01/05/2012 03:37 PM, Kris B. wrote:
>> On Thu, Jan 5, 2012, at 02:57 PM, Michael T. Dean wrote:
>>> Note, also, the best fix for the issue is to fix your system to not
>>> abuse the file system--i.e. configure your system to use it
>>> appropriately.  After all, if you actually let the drive idle, rather
>>> than waking it every 10-30s, it will spend a majority of its time at
>>> idle 3 power usage (0.7W) versus 3.3W at idle and 5.3W for read/write.
>>> (Numbers based of WD20EARS -
>>> http://www.wdc.com/en/products/products.aspx?id=120 ).
>>> So, it's quite possible that changing the idle 3 timeout will invalidate
>>> your warranty.
>>> That said, it /is/ important that anyone with a WD Green configure their
>>> system to use the file system properly.  Again, see
>>> http://wdc.custhelp.com/app/answers/detail/a_id/5357 for some
>>> suggestions, but there are a lot more out there when you search on "low
>>> power linux" or "laptop mode linux" or similar.  Oh, and note, also,
>>> that having only MythTV recordings on the drive may "solve" the issue
>>> for you, too (assuming MythTV recording file writes are<8s apart, and,
>>> IME, they seem to be).
>> Thanks for posting this, Mike.  My green drive is a mythtv or storage
>> drive, only - and I was concerned... looks like I don't have to worry :)
> Well, you shouldn't have to worry about MythTV--but who knows what your
> distro may be doing.  :)
> I'd say it's worth checking your current value, as Ron mentioned (the
> count reported by the tools is correct, it's only the max that's
> incorrect/incorrectly-interpreted) and comparing it to how long you've
> been using the drive to see if you should do more.

Should have said that counts on my "mythtv recordings only" drive were 
quite reasonable (even if the 300K were the actual max), but counts on a 
friend's "mythtv recordings and whatever else he might be doing to it 
when I'm not looking" drive were significantly (3x) higher than 
mine--and we got the drives at the same time.


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