uma boa ferramenta com licenciamento gpl é o smartmontools http://sourceforge.net/apps/trac/smartmontools/ que apresenta uma versão gráfica gsmartcontrol http://gsmartcontrol.berlios.de/home/index.php/en/Home

http://en.wikipedia.org/wiki/Comparison_of_S.M.A.R.T._tools

ao incluir um anexo num post surge o seguinte:

http://www.webdigity.com/index.php?action=tutorial;code=16

http://informatica.hsw.uol.com.br/

http://www.motobit.com/util/charset-codepage-conversion.asp

http://linux-ip.net/sw/gratuitous-arp/README

http://www.debianhelp.co.uk/networktools2.htm

#aptitude install iotop
#iotop

outra opção:
#aptitude install sysstat
em /etc/default/sysstat colocar ENABLED="true"
#sar

http://www.go2linux.org/sysstat-linux-performance-monitor-toolkit

outra opção: lsof
http://www.linuxquestions.org/questions/slackware-14/how-to-see-what-ap…

http://servidordebian.wikidot.com/squeeze:monitoring-system-munin

dstat -D /dev/sdc
https://www.tecmint.com/dstat-monitor-linux-server-performance-process-…

https://www.tecmint.com/command-line-tools-to-monitor-linux-performance/

http://2bits.com/articles/tools-for-performance-tuning-and-optimization…