[mythtvnz] File System for RAID-5

[Hadley Rich]

On Mon, 2009-06-15 at 21:38 +1200, Jim Cheetham wrote:
> If you lose a second drive while one drive is out of action ... you
> lose data. Gone.

Same as your two disk RAID1.

> RAID5 doesn't give enough protection for your data, especially given
> the relative costs of media today. It has horrible failure modes,
> especially given that we don't know about drive health (most drive try
> self-healing without telling the OS that it's happening ... only
> informsingthe OS when a fatal error has occured). For big systems,
> RAID5 does not deliver decent performance (unlikely to be important
> for MythTV usages)

Disks fail and notify how they do, no matter what arrangement they are
in.

RAID5 has enough performance for most things, is cheaper and is easy to
grow.

They both still have their uses.

hads
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