Using Your Computer 21NOTE: RAID levels do not represent a hierarchy. A RAID level 1 configuration is not inherently better orworse than a RAID level 0 configuration.RAID Level 0RAID level 0 uses a storage technique known as "data striping" to provide a high data access rate.Data striping is a method of writing consecutive segments, or stripes, of data sequentially acrossthe physical drives to 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 full capacities of the drives.If you have two 120-GB drives installed, you have 240 GB on which to store data.NOTICE: Because RAID level 0 provides no data redundancy, if one drive fails, then the data on the otherdrive is also inaccessible. Therefore, ensure that you perform regular backups when you use a RAIDlevel 0 configuration.RAID Level 1RAID level 1 uses a data-redundancy storage technique known as "mirroring." When data is writtento the primary drive, it is then duplicated, or mirrored, on the other drive. A RAID level 1configuration sacrifices high data access rates for its data redundancy advantages.hard drivesegment 1segment 3segment 5hard drivesegment 2segment 4segment 6serial ATA RAIDconfigured forRAID level 0T2310bk2.book Page 21 Thursday, February 5, 2004 10:00 AM
