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