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

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Data Recovery Glossary (Letter V)

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.

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Data Recovery Glossary (Letter W)

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

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Data Recovery Glossary (Letter T)

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.

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Data Recovery Glossary (Letter S)

RLL (Run Length Limited) An encoding scheme used during write operations to facilitate data readback.

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Data Recovery Glossary (Letter R)

PC Personal computer. PRML (Partial Response Maximum Likelihood) A read channel using sampled data, active equalization and Veterbi detection to accurately retrieve the user data off the disk

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Data Recovery Glossary (Letter P)

MB (Megabyte) One megabyte as 1,000,000 (one million) bytes. MFM (Multiple Frequency Modulation) A method of encoding analog signals into magnetic pulses or bits.

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Data Recovery Glossary (Letter M)

Database A collection of data stored on a computer system medium, such as a hard drive, CD-ROM, etc., that can be used for more than one purpose. Data Recovery Data recovery is the procedure used to recover data from a variety of media and operating systems that has been lost by either hardware failure, human error, software bugs, a virus or a natural disaster

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Data Recovery Glossary (Letter D)

Before you venture into hard disk data recovery business, it is necessary to know the causes of hard disk failure . The causes can be either logical failture , or electrical failture or mechanical failture . Logical causes include problems with the boot sector of the hard drive which leads to non-booting of Windows

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Hard Disk Data Recovery Tips