"Simon Baxter" linuxtv@nzbaxters.com writes:
Anyway, I've bought 3x 1.5 TB SATA disks which I'd like to put into a software (mdadm) raid 5 array.
[...]
But does anyone have any production VDR experience with mdadm - good or bad?
If you like good performance and simple recovery, then do not use RAID5. Use RAID1 instead.
I use RAID5 only because I am too lazy to buy some new and larger disks for my VDR at the moment :-)
I have had serious performance-problems with parallel recordings and some Linux-background-jobs (like system-backup). I solved it by raising the I/O-priority of vdr with ionice:
ionice -c2 -n0 vdr -w 120 -v $VIDEODIR -d -t /dev/tty5 -g /tmp ...
Stephan.