Intel SS4000-E User Guide - Page 185

A Levels of RAID Levels of RAID Caution: After you initially configure your storage system, you can change from one type of disk configuration to another as described in "Reconfiguring Your Storage System Disks" on page 71. Doing this deletes all the data on your storage system. Linear Caution: A linear disk configuration does not offer any data protection. If you lose a hard disk, data loss occurs. A linear configuration is similar to using multiple hard disks in a regular computer. Each disk is an independent entity, and the data on it is self-contained. You can add or remove the disks without affecting the other disks. All the available disk space is used for data. If your storage system has only one disk, you must use a linear configuration. However, you can use a linear configuration for two, three, or four disks as well. RAID 0 - Data Striping Caution: A RAID 0 disk configuration does not offer any data protection. If you lose a hard disk, data loss occurs. Instead of writing all the data to one disk in a linear fashion, some bytes are written to one disk, and other bytes are written to another. Performance is faster because reading and writing activities can occur on multiple disks simultaneously. All the available disk space is used for data. For RAID 0, your storage system must have at least two disks. However, you can use RAID 0 with three or four disks as well, and the disks can be any size. D1 D2 Disk 1 Disk 2 AF000242 Figure 38. RAID 0 - Data Striping Intel® Entry Storage System SS4000-E User Guide 169