Chapter 5 Supporting Hard Drives
Terms in this set (47)
HDD Physical Size
2.5 inches for laptops or 3.5 inches for desktops, what does this refer to?
Solid State Drives
No moving parts, nonvolatile memory, which is similar to that used for USB flash drives
Magnetic Hard Drive
Contains one, two, or more patters or disks that are stacked and spin in unison inside a sealed metal housing.
Moves across the surface of the platter as they rotate, reading and or writing information.
The flat metal disks connected to a central spindle inside a Magnetic Hard Drive
5,400, 7,200, 10,000, 15,000
What are the HDD spindle rotation speeds? ____, ____, ____, ____
Hard drive sector size
Hybrid Hard Drives
Use both HDD and SSD technology, flash component used as a buffer to increase performance. For these to function the OS must support it.
The Windows 7/Vista technology that supports a hybrid drive
Before an SSD or an HDD leaves the factory this process is done to mark the sectors
SMART (Self-Monitoring Analysis and Reporting Technology)
Used to predict when a drive is likely to fail, by monitoring drive performance, temperature, and other factors. Will then display a warning message
IDE (Integrated Drive Electronics)
Older slower standard that was replaced by SATA
Standard uses a serial data path to connect components to the motherboard.
Technical Committee T13
ATA standards are developed?
ANSI (American National Standards Institute)
After the ATA standards are developed this organization publishes those standards
Is a standard used to connect optical drives to an IDE connector on the motherboard
Under Parallel ATA, two types of ribbon cables are used. The older cable has ______pins & _____ wires
Under Parallel ATA, two types of ribbon cables are used. The newer cable uses _____ pins & ____ wires.
High Airflow PATA cable
Instead of a flat ribbon configuration, this cable is bundled into a round case to allow more airflow
Transfers data directly from the drive to memory without involving the CPU
SATA International Organization
A consortium of manufactures led by Intel that developed the SATA standard
A SATA supported protocol that allows connect or disconnect a drive without powering down the system.
A SATA port on the outside of the tower used to connect external drives
A standard that can be used by many internal and external components, including printers and scanners. Typically used for servers it is faster, more expensive and more complicated.
7 or 15 devices
The maximum number of devices a SCSI bus can support
SCSI host adapter
An adapter card that is placed in an expansion slot on the motherboard and is responsible for managing all devices on the SCSI bus.
A device places at the end of SCSI cable after the last device in the chain to reduce the amount of electronic noise.
All devices are connected on one cable
A SCSI standard with an 8-bit wide bus.
A SCSI standard with a 16-bit wide bus
A unique number assigned to each device an a SCSI daisy chain to identify the device. This is set with DIP switches or with software.
Selecting a HDD
Both the BIOS and the device must support the same standard or they will revert to a slower standard that both with support. What process does this statement apply to?
The BIOS detects the new hard drive automatically and select the correct drive capacity.
A memory space from 2 MB to 64 MB that will stores information so that the HDD can read ahead.
PATA Drive Jumpers
Used to determine which drive is the master and slave.
SATA Drive Jumpers
Used to set features such as the ability to power on in stand by mode.
The master drive is connected on the end and the slave drive is connected in the middle
This process can be used for fault tolerance or to improve performance. Must have at least 2 drives. This feature can be set up using software however it is recommended to set it up in the BIOS before the OS is installed
A computer's ability to respond to a fault or catastrophe, such as hardware failure.
JBOD, Uses 2 hard drives to hold a single windows volume. Data is written to the first drive and when it is full the data continues to be written to the second.
Also called stripping where part of the data is written to each drive.
Also called mirroring where exact copies of all the data is written to each drive.
Requires at least 3 drives data is stripped across all three drives however parity is used so that if one drive fails the parity on the other drives can rebuild the missing data.
Requires 4 drives, used bother mirroring and stripping. The data is stripped across 2 of the drives while being mirrored across the other 2 drives.
An inexpensive way of backing up an entire hard drive or portions of it.
To read data from anywhere on the tape, you must start at the beginning of the tape and read until you come to the sought-after data
holds 1.44 MB of data, connected with a 34-pin connector