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Monitoring disk health
(draft)
 
On NetBSD
cd ~/
mkdir -p bin/
cd bin/
wget http://pbraun.nethence.com/scripts/sysutils/smart.ksh
chmod +x smart.ksh
crontab -e
0 * * * * /root/bin/smart.ksh
 
On any other systems
Make sure smartmontools and e2fsprogs are installed.
smartctl -a /dev/sda
badlocks -sv /dev/sda

smartctl -t short /dev/rwd4d
smartctl -l selftest /dev/rwd4d
 
Recovering bad sectors
Low format the HDD with vendor provided format tool, and see if some bad sectors have been recovered,
badblocks -wsv /dev/sda
Ref. https://wiki.archlinux.org/index.php/Badblocks
 
References
http://superuser.com/questions/171195/how-to-check-the-health-of-a-hard-drive
http://serverfault.com/questions/419007/understanding-smartctl-a-output
http://serverfault.com/questions/313649/how-to-interpret-this-smartctl-smartmon-data
http://ubuntuforums.org/showthread.php?t=920041
http://serverfault.com/questions/313649/how-to-interpret-this-smartctl-smartmon-data
https://www.thomas-krenn.com/en/wiki/SMART_tests_with_smartctl
 

Last update: Jan 17, 2016