Misc Hardware

Nas v San

How to make a usb bootable http://rufus.akeo.ie/http://rufus.akeo.ie/
An App to help with Temp http://www.freecong.com/2011/01/core-temp-free-portable-cpu-temperature.html
A good Q&A on raid http://www.tldp.org/HOWTO/Software-RAID-0.4x-HOWTO-4.html

Multipathing is the ability of a server to communicate using multiple physical connections between the host bus adapters in the server and the other device, typically in Fibre Channel (FC ), iSCSI SAN environments and direct attached storage when multiple channels are available.

You can use the -l and -ll options of the multipath command to display the current multipath configuration. The -l option displays multipath topology gathered from information in sysfs and the device mapper. The -ll option displays the information the -l displays in addition to all other available components of the system.

The following would suggest everything is working ok...

multipath -ll
|- 13:0:0:0 sdd 8:48 active ready running
|- 14:0:0:0 sdf 8:80 active ready running
|- 12:0:0:0 sde 8:64 active ready running
`- 15:0:0:0 sdg 8:96 active ready running

More info at https://www.centos.org/docs/5/html/5.1/DM_Multipath/