[mythtv-users] RAID 1 mirror with mythtv backend???
jayf0ster at roadrunner.com
Wed Jan 23 16:52:05 UTC 2019
On 1/23/2019 8:31 AM, James Abernathy wrote:
> I know others have used RAID mirrors on their mythtv backend. I have
> had my latest system running with 2 RAID 1 mirrors (4 drives) for
> about a year. Besides general file serving I have /mnt/recordings-tv1
> on one mirror and /mnt/recordings-tv2 on the other. I have both the
> /mnt/recordings-tv1 and 2 defined in the volumes section mythtv-setup.
> I had a drive fail last spring and replaced it and added the new one
> back into the mirror with no problems after recovering.
> But lately I've started to have a mdadm failure about every 2-3
> weeks. At first I thought it might be the fact that my latest batch
> of drives were Toshiba P300 desktop drives. Once I remove the drive I
> ran Spinrite 6 on them that reads and writes every sector on the
> drive. It found no errors.
> This has happened twice with the Toshiba drives. I order some Seagate
> Iron Wolf server drives made for NAS usage. In fact I had to put one
> into service today. I'm recovering the mirror now.
> What are the opinions on using RAID mirrors for mythtv recordings.
> Does that cause more problems than it's worth?? I'm debating going
> back to a 2 drive mirror for general NAS usage just for home data
> storage where the activity is very low. And then having a mythtv box
> just for backend with 2 drives just for recordings.
> I'm getting tired of replacing drives. I'm am grateful about not
> losing any data so far, but it's becoming a pain.
> mythtv-users mailing list
> mythtv-users at mythtv.org
> MythTV Forums: https://forum.mythtv.org
I do not use RAID, but I do backup my data onto another machine about
once a week. For recordings, videos, music, (data files), I use rsync
to mirror the drives. I only perform the mirroring when MythTV is not
recording on the drive, so there is no impact on recordings. At most, I
should only lose a week of recordings, assuming both the MythTV drive
and the backup drive don't fail at the same time (two drives could fail
in a RAID at the same time too). For OS file systems, I use
rdiff-backup, and keep about 1 year's worth of backups
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