Archive for May, 2009

Throughput

Posted on May 21st, 2009.

Hard Drive Recovery – Throughput Throughput refers to the average rate of successful message delivery over a communication channel. Throughput is usually measured in bits per second (bps) or data packets per second. System throughput or aggregate throughput is the sum of the data rates that are delivered to all terminals in a network. Throughput […]

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Rotational Delay

Posted on May 21st, 2009.

Hard Drive Recovery – Rotational Delay Rotational delay refers to the delay associated with reading or writing data on a computer’s disk drive. The term ‘rotational delay’ applies to rotating storage devices such as hard disk, floppy disks and the older drum memory devices. It refers to the time required for the specified area of […]

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Access Time

Posted on May 21st, 2009.

Hard Drive Recovery – Access Time Access Time is the time delay between a communication request to an electronic system and the access to it. Access time is measured only on access attempts that yield successful results. In telecommunications system, access time refers to the time period between the start of an access attempt and […]

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Macintosh

Posted on May 21st, 2009.

Hard Drive Recovery – Macintosh Macintosh or Mac is a series of personal computers developed and marketed by Apple Inc. The first Macintosh was introduced in 1984. Mac computers were the first ones to use mouse and graphical user interface (GUI) instead of the command-line interface. Original Mac OS desktop users communicated with the computer […]

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Parallel ATA

Posted on May 21st, 2009.

Hard Drive Recovery – Parallel ATA Parallel ATA (PATA) is an interface standard used for connecting storage devices such as hard disks, solid state drives (SSDs) and CD-ROM drives to a computer. As the name suggests, PATA is based on parallel signaling technology, unlike serial ATA (SATA) devices that use serial signaling technology. PATA is […]

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IEEE 1394 Interface

Posted on May 21st, 2009.

Hard Drive Recovery – IEEE 1394 Interface The IEEE 1394 is a serial bus interface standard used in high-speed communications and isochronous real-time data transfer. IEEE 1394 has been adopted as the High Definition Audio-Video Network Alliance (HANA) standard connection interface for audio/visual component communication and control. IEEE 1394 is also known by different brand […]

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Reed–Solomon Error Correction

Posted on May 21st, 2009.

Hard Drive Recovery – Reed–Solomon Error Correction Reed–Solomon error correction is a method of error correction by evaluating a polynomial constructed from the data. The polynomial is evaluated at several points, and these values are either sent or recorded. If the receiver gets many of the points correctly, it can recover the original polynomial even […]

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Perpendicular Recording

Posted on May 21st, 2009.

Hard Drive Recovery – Perpendicular Recording Perpendicular recording or perpendicular magnetic recording (PMR) refers to a technology for data recording on hard disks. PMR technology is capable of delivering more than triple the storage density of traditional longitudinal recording. Currently PMR is mostly used in hard drives. Technology Perpendicular recording enables higher storage densities by […]

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Embedded System

Posted on May 21st, 2009.

Hard Drive Recovery – Embedded System An embedded system is a special-purpose computer system that can perform one or a few dedicated functions. It usually comes embedded as part of a complete device. Some of the embedded systems are mass produced, and they are used in several common electronic devices in use today. Devices controlled […]

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Drive Mapping

Posted on May 21st, 2009.

Hard Drive Recovery – Drive Mapping Drive mapping refers to a method by which Microsoft Windows and IBM OS/2 associate a local drive letter with a shared storage area to another computer over a network. Once the drive is mapped, it appears in My Computer and Windows Explorer, so it can be accessed by the […]

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