Chapter 2 Flashcards
is a data storage device used for storing and retrieving digital information using one or more rigid (“hard”) rapidly rotating disks (platters) coated with magnetic material. The platters are paired with magnetic heads arranged on a moving actuator arm, which read and write data to the platter surfaces.pg70
hard disk drive (HDD)
connects a host system (the computer) to other network and storage devices. The terms are primarily used to refer to devices for connecting SCSI, Fibre Channel and eSATA devices.pg70
host bus adapter (HBA)
HDD Speeds.pg74
5400rpm,7200rpm,10.000rpm,12.000rpm,15.000rpm
it contains no actual disk, nor a drive motor to spin a disk) is a data storage device that uses integrated circuit assemblies as memory to store data persistently. pg75
solid-state drive (SSD)
is a disk storage medium composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic carrier lined with fabric that removes dust particles.pg 75-76
floppy disk
is a pre-pressed optical compact disc which contains data.CD-ROMs were popularly used to distribute software for computers and video game consoles. Some CDs, called enhanced CDs, hold both computer data and audio with the latter capable of being played on a CD player, while data (such as software or digital video) is only usable on a computer .pg78
CD-ROM
is a read-only digital versatile disc (DVD) commonly used for storing large software applications. It is similar to a compact disk-read only memory (CD-ROM) but has a larger capacity. A DVD-ROM stores around 4.38 GB of data. A CD-ROM usually stores 650 MB of data.pg78
DVD-ROM
is a high definition optical disc storage format of the Blu-ray family that consists of pre-recorded data. BD-ROM can only read audio and video information. It is the BD variation specifically designed for high definition movie and game content, with multi channel audio, superior navigation options and stunning visual results.pg79
BD-ROM
What are the Optical Drive Rates for CD-ROM,DVD-ROM,p78
150KBps for CD-ROM 1.4MBps DVD-ROM
A conventional HDD contains discs called platters, on which data is stored magnetically through read/write heads by way of a magnetic coating.pg70-72
Platter
A conventional hard disk drive system consists of the hard disk and its often-integrated controller as well as a host adapter to gain access to the rest of the computer system. The drive interface is a common component of the controller and host adapter.
Drive interface
Solid-state disks (SSDs) are capable of replacing conventional HDDs, contingent upon cheaper components and higher capacities.p75
Solid-state drives
have a single-sided, single-layer capacity of 25GB. The best the other options achieve is no more than roughly 17GBp84.
Blu-ray disc
Power supplies and AC adapters use standard wall outlets for an input of AC voltage, which they convert to the DC voltages required by the components they supply power to.p107
AC is in, DC is out
A PC’s power supply produces. p107
+3.3VDC, +5VDC, –5VDC, +12VDC, and –12VDC from a 110VAC input.
