[mythtv-users] Mooting architecture for a DataDirect replacement

Mike Perkins mikep at randomtraveller.org.uk
Fri Jun 22 08:49:02 UTC 2007


Yeechang Lee wrote:
> Mike Perkins <mikep at randomtraveller.org.uk> says:
>>> I was merely trying to propose an architecture that would make
>>> practical the distribution of the load of 200,000 Mythboxen
>>> looking for guide data every day.  NNTP would.
> 
>> You've seen Yeechang Lee's setup, then?
> 
> Slander! Libel! Defamation! Non sequitur! I do not have 200,000 boxes
> in my loft apartment. Just five (plus one that I need to replace the
> power supply of), of which two make up my MythTV setup. Plus a
> NAS. Just one of the boxes does the daily Zap2It retrieval, of
> course. (Jay's NNTP advocacy as the replacement transport mechanism is
> right on target, by the way. I *do* remember Usenet; I read it every
> day.)
> 
> Since it's mid-2007 and people fly around on jetpacks and eat vitamin
> pills in place of traditional food, I guess it's no longer so
> embarrassing to publicly reveal the amount of MythTV storage I have
> had at hand for the past six months: A total of 8.1TB of usable space
> (9.4TB raw) on one 16-disk 8TB RAID 6 array (in one of the two
> above-mentioned systems) and one three-disk RAID 5 array (in the
> other). I also have 1.4TB usable in RAID 5 in that NAS (not currently
> used for MythTV until 0.21 ships; see
> <URL:http://www.gossamer-threads.com/lists/mythtv/users/269011#269011>)
> and 2.6TB usable in RAID 5 in that out-of-commission box.
> 
> The two big boxes (the RAID 6 array/quad-core Xeon/MythTV slave
> backend, plus a 2001-vintage Athlon I keep putting off decommissioning
> to turn into another VMware VM on the Xeon) sit in the hall closet to
> minimize noise. The RAID 5 array/MythTV frontend/master backend sits
> in the living room. An iMac G3 sits upstairs in the bedroom. My
> day-to-day machine is a MacBook, which I use to SSH into all the other
> boxes.
> 
> And, before you ask:
> 
> * Yes, my MythTV setup's essentially full (59GB free at the moment
>   between the two arrays). I could at a pinch free up several hundred
>   GB by deleting documentaries and several hundred more by deleting
>   movies that will be rebroadcast in the next two weeks, though.
> * Yes, almost all of the 1142 programs (65 days 11 hrs 25 mins) is in
>   HD via FireWire (two HD cable boxes) or OTA (a HDHomeRun).
> * Yes, it's all material I wouldn't be embarrassed to show my parents
>   (<URL:http://www.gossamer-threads.com/lists/mythtv/users/203213#203213>
>   and
>   <URL:http://www.gossamer-threads.com/lists/mythtv/users/183754#183754>).
> * Yes, my setup is ridonkulously excellent, thank you.
> 
> So, you were saying . . . ?
> 
...that's Yeechang Lee. Who has more processing power than NASA (or 
should that be NSA?), and more storage than the Library of Congress.

Just kidding, honestly. I drool over your setup. Seriously, I've done 
coding contracts at large firms with less processing power than you have.

Questions. When do you find the time to actually *watch* anything? And 
you must have a fierce power bill. Does Arnie know you are using half of 
California's electricity?

Mike Perkins


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