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| The defree to which a system can tolerate failures. Adding redundant components, such as disk duplexing, is a way to build in fault tolerance |
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| The circuit board that controls SCSI bus supporting as many as 7 or 15 seperate devices. The host adapter controls communication between the SCSI bus and the computer. |
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| Allows you to connect and disconnect a device while the system is running. |
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| The term used by Windows for the RAID 1 level that duplicates data on one drive to another and is used for fault tolerance. |
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| Redundant array of inexpensive/independent disk. Several methods of configuring multiple hard drives to store data that increases logical volume size improves performance or ensures that if one drive fails data is still available from another drive. |
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| Using space from 2 or more physical disks to increase the disk space available for a single volume. Performance improves because data is written evenly across all disks. Windows calls RAID 0 a striped volume. |
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| A type of drive imaging that duplicates data on one drive to another drive and is used for fault tolerance. Windows calls RAID 1 a mirroed volume. |
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| A technique that stripes data across 3 or more drives and uses parity checking, so that if one drive fails, the other drives can re-create the data stored on the failed drive. RAID 5 drives increase performance and provide fault tolerance. Windows calls drives RAID-5 volumes. |
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| A combination of RAID 1 and RAID 0 that requires at least 4 disks to work as an array of drives and provides the best redundant and performance. |
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| Using a spanned volume to increase the size of a volume. |
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| A type of dynamic volume used for 2 or more hard drives that writes to the disks evenly rather than filling up allotted space on one and then moving on to the next. |
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