My Ubuntu backup server was recently upgraded in storage space to a RAID 10 array... now it consists of 8T of raw drive space which was before 2T of space.
But I have been having trouble when it actually goes into production and starts backing up my main file server. It would always go into a degraded state when the rotation took place.
I noted that some of my scripts copy pretty big trees with cp -a... since i've replaced all cp commands with rsync... for a little more reliability :)
However, digging upon the subject of ext4 I discovered that journal entries are left unsatisfied too long (so it appears) so I've moved back to ext3.
I am considering creating a RAID 1 partition by using a small partition on drive and a ramdisk as the actual journal which should ensure speed for journal response and also ensure that the data is not lost upon reboot.
What are your thoughts?