188 AppendixAbout Your RAID ConfigurationRAID Level 0 ConfigurationA RAID level 0 configuration uses a storage technique known as "data striping"to provide a high data access rate. Data striping is a method of writingconsecutive segments, or stripes, of data sequentially across the physical drivesto create a large virtual drive. Data striping allows one of the drives to read datawhile the other drive is searching for and reading the next block.Another advantage of a RAID level 0 configuration is that it utilizes the fullcapacities of the drives. For example, if you have two 120-GB drives installed,you have 240 GB on which to store data.NOTICE: Because RAID level 0 configurations provide no data redundancy, if onedrive fails, then the data on the other drive is also inaccessible. Therefore, ensurethat you perform regular backups when you use a RAID level 0 configuration.RAID Level 1 ConfigurationRAID 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-accessrates for its data redundancy advantages.If a drive failure occurs, subsequent read and write operations are directed tothe surviving drive. A replacement drive can then be rebuilt using the datafrom the surviving drive. Also, because data is duplicated on both drives, aRAID level 1 configuration using two 120-GB hard drives collectively has amaximum of 120 GB on which to store data.Cleaning Your ComputerCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions located in the Product Information Guide.Computer, Keyboard, and DisplayCAUTION: Before you clean your computer, disconnect the computer from theelectrical outlet and remove any installed batteries. Clean your computer with asoft cloth dampened with water. Do not use liquid or aerosol cleaners, which maycontain flammable substances.
