[mythtv-users] Snagged 1TB SSD for less than $100

[Greg Oliver]

On Mon, Jan 14, 2019 at 12:36 PM Jon Boehm <jon.s.boehm at gmail.com> wrote:

> I did it.  Grabbed an ADATA 960GB SSD for  $97.74.  It was an amazon
> flash sale.   I had a friendly bet with a friend, last summer, we would see
> off-brand 1TB SSDs for less than $100 by black friday.  I did see it for
> this price but amazon flash sales are short lived.  I was lucky and grabbed
> one when they went back on sale last week.  Installed it as my DVR drive
> yesterday.  So far all is fine.
>
> I'm hoping this will help with New Years Eve or SuperBowl type
> recording/playback events.  Events were most of my 4 tuners are recording,
> commercial scanning is in working, and I'm playing back a show while its
> recording. My 5TB (only 1TB allocated to Mythtv) spinning drive was cheap
> but had poor seek times and I think the SSD should really help.   So far
> FF/RW are more responsive but time will tell if the ADATA drive will last.
>

I have always had 4x HDHRs and 2x HD-PVRs with realtime commflagging
going.  ISTR that commflagging in realtime was way less intrusive than
after, but I ran cgroups on everything that could affect recording and
playback.  You can get a smooth experience with a little (or a lot) of
work.  I wrote a wiki article long ago, so some info may be out of date and
not be 100% correct any longer, but it gives the backend the I/O needed to
record while commflagging and the rest of the system takes a back seat.

https://www.mythtv.org/wiki/Tuning_Linux_for_MythTV:_Using_cgroups

Disclaimer:  I no longer do this as I have arrays that can handle what is
thrown at them, or I would update the doc.  I am making a new image for my
day job soon, and it uses cgroups, so I will update it then - just waiting
on RHEL 8 to be released to migrate to cgroups v2.

-Greg

> I started my MythTV days with 2x 250GB and a 500GB spinning drives 12yrs
> ago.   That worked fine but it was to many drives. 1TB has always been my
> target for recordings.
>
>
> https://www.amazon.com/gp/product/B07K1NB8XN/ref=ppx_od_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
>
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