[mythtv-users] Hardware Setup Advice
Michael T. Dean
mtdean at thirdcontact.com
Thu May 24 18:24:44 UTC 2012
On 05/24/2012 02:08 PM, Simon Hobson wrote:
> David Crawford wrote:
>> Would that mean you would ideally want 20 storage groups per disc for
>> 20 streams or 20 spread over the various disc's your using?
> As others have said, one
directory (or multiple directories)
> per disk.
all in one Storage Group
> What you don't want to do is create multiple filesystems on one disk
> and use them separately. Doing that guarantees large head movements
> during seeks - probably larger on average than using one filesystem.
> Eg, if you divide a disk into 4, and have four recordings going, then
> you are guaranteed to have to seek to multiple places in the first
> quarter, multiple places in the second quarter, multiple places in the
> third quarter, and multiple places in the last quarter - each second.
> Thus you will **always** have seeks that span over half the disk.
> With a single filesystem, then you are likely to have large seek
> distances, but not guaranteed.
Right. The above just to reiterate, you only need /one/ Storage Group,
with lots of directories pointing to lots of file systems.
More information about the mythtv-users