[mythtv-users] New Myth setup - questions about storage.
linux at thehobsons.co.uk
Mon Dec 28 17:11:53 UTC 2009
Derek Cass wrote:
>I am rebuilding my mythbox to take advantage of 4 new 640GB drives
>that I now have. I am planning on putting them together in a RAID5
>array for recordings and to use as a file server for all the
>computers on my home network.
>I am planning on putting the OS on a separate hard drive, and
>therein lie my questions. I have a few hard drives to choose from,
>a 80GB ide, 120GB ide, a 160 GB SATA, and a 500GB SATA. I would
>prefer to use the SATA drives in other computers in the house, but I
>am concerned about system performance using the slower ide drives as
>the OS drive. The optical drive in this system is also an ide
>drive, although it doesn't get much use. I am aware of performance
>issues with a hard drive and an optical drive sharing the same
>channel, but I only rip the (very) occasional DVD; I never use it as
>a CD or DVD player since the mythbox is hidden away in a closet.
>The motherboard in this system (Gigabyte M57SLI-S4) only has 1 ide
>channel, so the OS drive and optical drive would have to share it.
>Should I use the ide drive as my main drive?
>Are there any issues with using ide and sata in the same system?
For reference, I have a single WD 'Green' drive in my backend - and
that's a Xen box running 4 VM of which Myth is just one. Just a
single tuner, but doing multirec.
Mixing IDE (aka PATA) and SATA should not be a problem. And any of
your drives should be OK for the OS and Myth program/DB.
I think general consensus on the list has been that you don't really
need to use RAID for your Myth storage - Myth will do some balancing
between drives and in general you don't need huge bandwidth off any
single drive (but that depends on your usage - particularly if you do
commflagging or transcoding). So it might be better to split the
drives up and have part of each one in a raid array for your file
server, and the rest as single drives for Myth storage.
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