"További kérdésem, hogy miként kell helyesen raid 1 be kötött merevlemezeket monitorozni?"
http://en.gentoo-wiki.com/wiki/RAID/Software
"Data Scrubbing
In short: Especially if you run a RAID5 array, trigger an active bad block check on a regular basis, or there is a high chance of hidden bad blocks making your RAID unusable during reconstruction.
Normally, RAID passively detects bad blocks. If a read error occurs, the data is reconstructed from the rest of the array, and the bad block is rewritten. If the block can not be rewritten, the defective disk is kicked out of the active array.
Once the defective drive is replaced, reconstruction will cause all blocks of the remaining drives to be read. If this process runs across a previously undetected bad block on the remaining drives, another drive will be marked as failed, making RAID5 unusable. The larger the disks, the higher the odds that passive bad block detection will be inadaquate. Therefore, with today's large disks it is important to actively perform data scrubbing on your array.
With a modern (>=2.6.16) kernel, this command will initiate a data consistency and bad block check, reading all blocks, checking them for consistency, and attempting to rewrite inconsistent blocks and bad blocks.
echo check >> /sys/block/mdX/md/sync_action"
Welcome Back, My Friends, to the FLAME That Never Ends...tisztelet a kivételnek