Setting Up and Using Your Computer 29Another advantage of a RAID level 0 configuration is that it utilizes the full capacities of thedrives. For example, if you have two 120-GB drives installed, you have 240 GB on which to storedata.NOTICE: Because RAID level 0 configurations provide no data redundancy, if one drive fails, then thedata on the other drive is also inaccessible. Therefore, ensure that you perform regular backups whenyou use a RAID level 0 configuration.RAID Level 1 ConfigurationRAID level 1 uses a data-redundancy storage technique known as "mirroring." When data iswritten to the primary drive, it is then duplicated, or mirrored, on the other drive. A RAIDlevel 1 configuration sacrifices high data-access rates for its data redundancy advantages.hard drive 1segment 1segment 3segment 5hard drive 2segment 2segment 4segment 6serial ATA RAIDconfigured forRAID level 0