vocal 1 Flashcards
This process protects data by adding extra information that can be used to rebuild data if a drive fails
Disk Stripping With Parity
The geometry value that describes the number of sectors in each track.
Sectors Per Track
Today the most often used method to move the actuator arms in a Hard Drive
Voice Coil
This determines where a hard drive stores data
Geometry
The onboard circuitry of the drive that translates logical geometry to the physical geometry
Sector Translation
The traditional I/O addressing scheme, where the CPU talks directly to the hard drive via the BIOS to send and receive data. There are three different speeds.
PIO Modes
ATA-4 introduced this new mode and it is now the primary way a hard drive communicates with a PC.
Ultra DMA
Is composed of individual platters, with read/write heads on actuator arms controlled by a servo motor- all contained in a sealed case that prevents contamination by outside air.
HDD
One of the two technologies used to move the arms in a hard drive. (not voice coil)
Stepper Motor
An advanced method of RLL that uses powerful, intelligent circuitry to analyze each flux reversal and make a “best guess” as to what type of flux reversal it just read.
PRML
ATA-7 introduced this the fastest and probably least adopted of all of the ATA speed, Ultra DMA mode 6.
ATA/133
ATA Hard Drives are often referred to as this type of drive.
IDE
A number ranging from 0 to 15 which provides a way for the host adapter to tell one device from another.
SCSI ID
Spreading data among multiple drives. This provides no redundancy.
Disk Striping
Another name for actuator arms which move the read/writ heads across the platter on the hard drive.
Head Actuator
Another name for ATA-6 which increased the limit of hard drives to 144 petyabytes (144,000,000GB)
ATA/ATAPI6
An extension to the ATA specification that enables non-hard drive devices such as CD_ROM drives and tape backups to connect the PC via the ATA controllers
ATAPI
Using a separate controller on each drive. With two drives, each on a separate controller, the system will continue to operate even if the primary drive’s controller stops working.
Disk Duplexing
A type of drive with no moving parts. It is faster and cooler than a regular hard drive.
SSD
Helps predict when a hard drive is going to fall by monitoring the hard drive’s mechanical components.
S. M. A. R. T.
Creates the ability of the Hard Drive to lie to the computer about its geometry through an advanced type of sector translation
LBA
The process of reading and writing data at the same time to two drives
Disk Mirroring
A tiny car that you plug directly into the 40-pin connector on a PATA drive that enables you to install a parallel ATA device, including a hard drive, optical drive, and other devices, to a serial ATA controller
SATA Bridge
A specific piece of track on a sliver, and each sector stores 512 bytes of data
sector
These types of devices connect together in a string of devices called a chain
SCSI
Putting something on the ends of the wire to prevent an echo
Termination
A group of tracks of the same diameter on a hard drive.
Cylinder
This type of interface started around 1990, and now virtually monopolizes the hard drive market
ATA
A series of improvements to the ATA standard is also called ATA-2
EIDE
A method to enable the hard drives to talk to RAM directly, using old-style DMA commands
DMA Modes
A series of SCSI devices working together through a host adapter
SCSI Chain
A point-to-point connection between the SATA device- HARD DISK, CS-ROM, CD-RW DVD-ROM, DVD-RW, BD-R, BD-RE, and so forth and the SATA controller
HBA
Extends the SATA bus to external devices.
ESATA
Each circle on a hard disk where you store data on the drive
Track
This new set of BIOS commands allows a system to handle drives up to 137 GB
INT 13
Each platter on a hard disk requires two of these to read/write and store data on the disk
Heads
Also referred to as parallel ATA and send data in parallel, on 40 or 80 wired data cables
PATA
Using multiple drives for data protection and increasing speeds
RAID
This is the name used to describe the casing of external hard drives
External Enclosure
The first ATA drives used this to connect to the computer by plugging into the drive and into a hard drive controller
40-Pin Ribbon Cable
This technology has replaced parallel ATA. It sends data in serial, using only one wire for data transfers
SATA
This type of cable uses additional wires that acts as grounds to improve the cable’s capability to handle high speed signals
80- wire Cable
