Avago Technologies 3ware SAS 9750-4i - Manual (Page 22)

Chapter 1. Introduction to the 3ware Command Line Interface
14 3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.0
Figure 6. RAID 50 Configuration Example
Single Disk
A single drive can be configured as a unit through 3ware software. (3BM,
3DM 2, or CLI). Like disks in other RAID configurations, single disks
contain 3ware Disk Control Block (DCB) information and are seen by the OS
as available units.
Single drives are not fault tolerant and therefore not recommended for high
availability systems unless additional precautions are taken to prevent system
hangs and data loss.
JBOD
A JBOD (acronym for “Just a Bunch of Disks”) is an unconfigured disk
attached to your 3ware RAID controller. Creation of JBOD configuration is
not supported in the 3ware 9750 series. New single disk units must be created
as “Single Disk.”
JBOD units are not fault tolerant and therefore not recommended for high
availability systems unless additional precautions are taken to prevent system
hangs and data loss.