[mythtv-users] Install Mythbuntu with RAID 1 (Software)

[Tim Draper]

On 15 December 2011 09:00, Richard Morton <richard.e.morton at gmail.com> wrote:
> If that is what you are desiring then go buy a small SSD card for the OS (or
> two - or two old small 40GB drives).
>
> RAID1 requires both drives to write the same information to both discs,
> which means you get zero performance benefit on write compared to a single
> drive and Myth requires write performance.
>
> When reading RAID 1 also needs to read from both drives and compare the two
> sets of data to ensure that they are the same and not corrupted... again
> little or no performance gain.
>
> In effect you have a redundant system with the performance of 1 drive being
> used for OS and recordings and the collective experience and advice of
> almost everyone on this list is - don't share the same drives for OS and
> recordings...
>

maybe i've mis-understood your angle here, but i've read it as a
misunderstanding of why you choose raid1 in the first place. you dont
choose raid1 for performance reasons, its purely down to redundancy of
the physical hard drive.
if you loose a drive, you dont loose the entire volume.