In computing, a redundant array of independent disks (more commonly known as a
RAID) is a system of using multiple hard drives for sharing or replicating data among the drives. Depending on the version chosen the benefit of
RAID is a one or more of increased data integrity, fault-tolerance, performance or capacity compared to single drives.
JBOD ("just a bunch of disks," or "just a bunch of drives") is a derogatory term - the official term is "spanning" - used to refer to a computer'
s hard disks plugged into a controller card that haven'
t been configured according to the
RAID (for "redundant array of independent disks") system to increase fault tolerance and improve data access performance.
Most disk controllers
don'
t have any
RAID functionality built into them. In these cases, the Operating System sees the disk drives connected to the controller as Just a Bunch Of hard Drives. In addition, many RAID controllers
default to a JBOD configuration before being configured for RAID.
Johnny: I don'
t know much about raid, but I wanna
add more hard drives to my PC to store all my Geighmahnpr0n, Game *Demos*, Keyboard Drivers, and Credit Card #'s on.
Tim:
Hey johnny you can buy a controller card, and set it up as a JBOD array.
Johnny: Wow... I have no idea what you just said, but if you set it up for me I'll let you watch my mom in the shower through a hole in the
wall...