On 04/05/2012 05:38 AM, Jonathan Vomacka wrote: > CentOS Community, > > What commands can I use to check the disk health of the system when LVM2 > is being used on top of a RAID 10 using a HARDWARE 3ware raid card. The > OS sees a hardware raid usually as one big drive. Is there a way to > check the disks individually to see if any are failing, or throwing hard > or scsi transport errors? yum install smartmontools smartctl -a /dev/twa0 -d 3ware,0 You can check each drive by changing '3ware,0' to '3ware,x' where x is the drive #. You can automate the checks by configuring /etc/smartd.conf using lines like: /dev/twa0 -d 3ware,0 -H -l selftest -l error -o on -S on -s (O/../../6/22|S/../../1/2|L/../../2/1) -m root at yourdomain.com Remember to comment out the default line (the first line of /etc/smartd.conf). -- Benjamin Franz