Depending on who you’re talking to, JBOD is an acronym for “just a bunch of disks” or “just a bunch of drives.” A group of disks is joined to form a single unit called a logical drive. This is done by the operating system or disk management software using a process called “spanning.” The entire logical drive is composed of all the drives and is given a single drive letter.

This is the exact opposite of partitioning a hard drive. Partitioning takes a single drive and divides it into smaller, logical drives. Each partition is given an individual drive letter. This is often used to separate the operating system and programs from the user’s data.

Unlike a RAID array, the disks In a JBOD group don’t have to be the same capacity and either an even or an odd number of disks can be used.

To understand JBOD, think of a piece of paper. You’re writing a story and come to the end of the page. You can tape another piece of paper to the bottom and continue writing. Get to the end of that one and do the same. The sheets don’t have to be the same length; they just need to be taped together, top to bottom. That’s how a JBOD array works.  If you find yourself in a situation where your array has crashed and in need of recovering data… contact The Data Rescue Center.  We specialize in RAID data recovery.