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Definition
| Controller is built into the drive. Limited to two channels of two devices each. |
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| No controller, typically a separate bus within the computer system. Supports up to either eight or 16 devices, including the adapter. |
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| Supports one device per channel. Uses thinner, more flexible cables. |
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| Sequential access devices used for the archiving of data from a system |
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| Storage devices that store data in flashable memory, allowing for no moving parts. |
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| Used to supply power to floppy disk and some tape drives |
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Definition
| Used to supply power to Parallel ATA drives, optical drives, and SCSI drives |
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| A fiber channel or iSCSI network designed to attach storage devices to servers, allowing for easy movement of data between servers. |
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Definition
| A dedicated storage server that can be installed independent of other servers. |
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Definition
| The ability of a network or system to withstand a foreseeable component failure and continue to provide an acceptable level of service |
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Term
| RAID - Redundant Array of Independent Disks |
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Definition
| a set of specifications for multiple-disk systems designed to improve performance and/or fault tolerance. |
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Term
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Definition
| Also known as striping, the process of spreading data across multiple drives. Improves both read and write performance. Any one drive failure results in complete loss of data. No disk space is lost. Two or more physical drives are required. |
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Term
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Definition
| Also known as mirroring (with one controller) or duplexing (with two controllers), data is written to both halves simultaneously. As a result, writing to disk is slower, but reading is faster. One half of the RAID may be lost without losing data. 50% of the disk space is lost. An even number of disks is required. |
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Term
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Definition
| Both data and parity information is spread across all drives. At least three disks are required. Read and write performance is improved. Data capacity equivalent to one disk in the set is lost. One disk can be lost without losing data. |
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Definition
| a computer file containing the complete contents and structure of a storage medium or device. |
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Definition
| The transfer of one hard disk's image to another. |
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Definition
| An isolated section of a disk that functions like a separate physical drive. |
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Definition
| Contains one file system or logical drive, sometimes referred to as volumes. |
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Definition
| A primary partition that is bootable and holds the operating system |
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Definition
| Can contain several file systems, which are referred to as logical disks or logical drives. |
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Definition
| Part of a physical disk that has been partitioned and allocated as an independent unit and functions as a separate drive. |
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Definition
| The process of writing track and sector markings on a hard disk |
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Definition
| The process of an OS building a file system on a drive or partition. Also verifies reliability. |
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Definition
| a printed circuit board that holds a group of memory chips that act as a single memory unit. |
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Definition
| All available memory is accessible by the computer |
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Definition
| Two banks of memory, one of which may be accessed at a time by the computer. |
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| Programmable ROM that can only be written once. |
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Definition
| ROM that can be erased through a quartz crystal on the top of the chip. A UV light changes all the data back to 1s. |
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Definition
| ROM that can be reprogrammed through software from the BIOS or chip manufacturer. |
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Definition
| A type of memory that services the CPU. |
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Definition
| Cache memory built directly into the CPU |
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Term
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Definition
| Cache memory that can be built into the CPU, reside on a separate chip, or on a bank of chips |
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Term
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Definition
| Cache memory built into the system board if L2 cache is built directly into the CPU. |
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Term
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Definition
| A CPU's front-side bus: 32 or 64 bits |
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Term
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Definition
| The number of processing cycles a microprocessor can perform in one second. |
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Term
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Definition
| Configuring a system board to run the CPU at a speed greater than your CPU is rated to handle. |
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Term
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Definition
| The overall rate at which instructions are processed. A combination of clock speed and bus clock speed |
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Definition
| Adjusting the CPU speed to conserve battery to troubleshoot hardware problems. |
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Definition
| Makes on physical CPU appear as two logical CPUs. Increases performance by 30% |
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Definition
| A single chip containing two or more distinct CPU cores that process simultaneously. |
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Term
| VRM - Voltage Regulator Module |
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Definition
| A replaceable module used to regulate the voltage fed to the CPU. |
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Term
| MMX - Multimedia extensions |
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Definition
| A set of additional instructions, called microcode, to support sound, video and graphics multimedia functions. |
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Term
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Definition
| A device attached to a processor that absorbs heat from the CPU and dissipates the heat via its fins into the surrounding air. |
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