[mythtv-users] HELP! I want my mythtv!

Hika van den Hoven hikavdh at gmail.com
Sun Apr 13 14:46:38 UTC 2014


Hoi Simon,

Sunday, April 13, 2014, 4:36:06 PM, you wrote:

> Hika van den Hoven <hikavdh at gmail.com> wrote:

>> You could consider putting them
>> in raid1. That way a drive failure won't cost you your data. With
>> raid1 reading is faster since it is spread over the two drives.

> RAID1 (mirrored) is no faster at writing than the slowest disk in
True

> the array, and reading might not be any faster - it's very
> application dependent and in some cases the array can be slower than
> single drives. For Myth, unless you want the redundancy, then raid is not beneficial.

No, it is file size dependant. The spread read is managed by the
kernel, but if the files are smaller then one block, it can not
spread. With the recording files being so big!
Actually storage groups only can give speed increase if you're
recording two shows or watching and recording and they happen to be on
separate disks. With raid1 the read speed increase is always (if the
file is big enough).
In optimum situation the max increase with storage groups can be
higher, but is not guarantied!

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens



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