[mythtv-users] Storing recordings on a NAS via NFS (I/O concerns)

[Phill Edwards]

My current setup is a virtualised (ESXi) MythBuntu which uses an NFS share
provided by another Ubuntu VM on the same ESXi hypervisor. I have 2 x PCI
DVB-T tuners passed through to the MythBuntu VM plus an HD Homerun which
means I can record up to 8 programs at once (I set the max per channel to
2). I was originally worried that this would suffer from disk I/O problems
but it seems to work fine.

I'm now thinking of ditching the NFS VM and using my QNAP TS-410 NAS to
provide the NFS share. But I'm worried that this may suffer from I/O
bottlenecks. As an example, I copied a 800MB file from the NFS VM to the
MythBuntu VM and it took 14 seconds. But when I copied the same file from
MythBuntu VM to the NAS it took 49 seconds.

The NAS has a gigabit ethernet port but it's a few years old, and the disks
are Hitachi 7200 RPM. Do you think it will be up to the job? Is there a
test I could do to check before I head down this path?
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