[mythtv-users] Some master/slave backend advise required

jacek burghardt jaceksburghardt at gmail.com
Tue Jun 3 01:45:16 UTC 2014


How about using hp 3x msa50 with nice sas card. That would handle such
load. But with mythtv writing and reading would double the load.  I have 3
bonded gigabit network cards on my myth backend . I also use battey backed
sas controlers.


On Mon, Jun 2, 2014 at 6:37 PM, Jon Heizer <jheizer at gmail.com> wrote:

>
>>
> Your databases are not also on the array are they?  That would be bad
> news.
>
> Really you have your 2 possible issues.  CPU currently being maxed and the
> IO bandwidth.  These are all guesses since this is a serious load but
> personally if you wanted them to remain a single machine I'd swap the i5
> with an i7 and break the array into at least 2.  Whether trying 2 vdevs in
> a raidz or just 2 totally separate raidz since myth can have ad many
> individual storage locations as you want. And/or put a SSD ZiL in front of
> any raidz configuration.  But if you are really pushing that IO load it
> could still be an issue.  Or build a second box and just put 1/2 the
> storage and 1/2 the tuners in it as a slave backend if you don't want to
> move to an i7.
>
> I'm curious what people that do have this high of a load do if they have
> redundant storage.  Maybe just 3 sets of mirrors would be best.
>
>
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