Tag Archives: data recovery glossary

Data Recovery Glossary (Letter G J K N O Q Z )

GB (Gigabyte) One gigabyte is 1,000,000,000 (one billion) bytes or 1000 (one thousand) Megabytes.

Jumper In EIDE drives, a jumper is an electrically-conductive component that you place over pairs of pins that extend from the circuit board on the hard drive jumper block to connect them electronically. For example, a jumper is one way to designate a hard drive as master or slave. The jumper block is located next to …

Data Recovery Glossary (Letter W)

Winchester Disk Former code name for an early IBM hard disk model, sometimes still used to refer to the technology and design of most traditional hard drives.

Windows Microsoft’s series of operating systems for personal computers. Currently popular versions are Windows 95 and Windows 98.

Word Two bytes that are processed together in a single operation.

Workstation A personal computer with exceptional capacity and performance capabilities for use mainly in …

Data Recovery Glossary (Letter V)

Virus Scanner Software that is used to scan for and eradicate computer viruses, worms, and Trojan horses.

Viterbi Detection An algorithm used in read channel technology that detects an entire sequence of data bits at a time and determines the most likely sequence of data bits by comparing actual sequence of data bit samples with sequences of possible data bit sample to accurately detect that data written to disk.

Voice …

Data Recovery Glossary (Letter U)

Ultra SCSI Provides 20 MB/s transfers over an 8-bit bus or 40 MB/s transfers over a 16-bit Wide SCSI bus. Also known as Fast-20 SCSI, this feature is most commonly found in SCSI-3 drives.

Ultra DMA/33 A high-speed host data transfer feature that transfers data at 33.3 MB per second.

Un-correctable Error An error that cannot be overcome using Error Detection and Correction.

Unformatted Capacity The total number of usable …

Data Recovery Glossary (Letter T)

TPI (Tracks per inch) The number of tracks written within each inch of the disk’s surfaces, used to measure how closely the tracks are packed on a disk surface. Also known as track density.

Tagged Queuing The ability of the drive to receive multiple I/O processes from each initiator.

Task File The set of I/O Host Interface Registers used to transfer status, commands, and data between the host and the …

Data Recovery Glossary (Letter S)

SCA-2 SCA-2 (Single Connector Attach) interface incorporates a grounding contact, blindmate connector, direct plug misalignment tolerance, ESD protection, hot swap capability, and backplane connector options for SCSI devices. SCA-2 is commonly called the 80-pin SCSI connector.

SCSI Configure Automatically (SCAM) Allows users to attach SCSI devices without worrying about configuration options.

SCSI-1 The Small Computer System Interface (ANSI document X3.131-1986).

SCSI-2 The Small Computer System Interface (ANSI document X3.131-1994).

SCSI-3 …