Dell Vostro 200 Owner's Manual - Page 42

About RAID Configurations This section provides an overview of the RAID configuration that you might have selected when you purchased your computer. Although several RAID configurations are available, Dell offers only RAID level 1 for its Vostro computers. A RAID level 1 configuration is recommended for the data integrity requirements of digital photography and audio. The Intel RAID controller on your computer can only create a RAID volume using two physical drives. If a third drive is present, then that drive cannot be made part of a RAID volume using the Intel RAID configuration program, although it can be used as a spare drive in a RAID 1 configuration. However, if four drives are present in your computer, then each pair of drives can be made into a RAID level 1 volume. The drives should be the same size in order to ensure that the larger drive does not contain unallocated (and therefore unusable) space. RAID Level 1 Configuration RAID level 1 uses a data-redundancy storage technique known as "mirroring." When data is written to the primary drive, it is then duplicated, or mirrored, on the other drive. A RAID level 1 configuration sacrifices high data access rates for its data redundancy advantages. serial ATA RAID configured for RAID level 1 segment 1 segment 2 segment 3 segment 4 segment 5 segment 6 hard drive 1 segment 1 duplicated segment 2 duplicated segment 3 duplicated segment 4 duplicated segment 5 duplicated segment 6 duplicated hard drive 2 42 Setting Up and Using Your Computer