raid5 Archives - erol.name

Stop HDD drives waking up in mythbuntu

I wanted to have my RAID5 array to go to standby after 10 minutes of inactivity. I achieved this with:

/sbin/hdparm -S120 /dev/sd[a-i]

But my drives were waking up from their standby because I had mythtv-backend configured with UPNP support. Continue reading “Stop HDD drives waking up in mythbuntu”

First you need to add to your RAID device /dev/md0 new hdd partition (/dev/sde1, /dev/sdf1/dev/sdg1) in this case /dev/sdg1:

mdadm --add /dev/md0 /dev/sdg1

Then you need to grow your RAID device to the new number of disks X(4,5,6):

mdadm --grow /dev/md0 --raid-devices=4