Chapter 2 - Storage Devices & Power Supplies Flashcards
tell me the 3 critical components of the hard disk drive
2-70
controller
hard disk
host bus adapter
what are the two most common types of controllers?
what do the controllers do? (5 things)
2-70
PATA and SATA
- controls the drive
- controls how the drive operates
- controls how the data is encoded onto the platters
- controls how the data sends signals to the various motors in the drive
- receives signals from the sensors inside the drive
what is the hard drive?
what are platters?
2-70
the physical storage medium
the small discs that hard drive systems store information on
what does HBA stand for and what does it do?
2-70
host bus adapter
its the translator, converting signals from the controller to signals the computer can understand
what’s the difference between a track and a sector?
2-72
a track is a concentric ring that goes around the surface of the platter
a sector is just one section of the track, it is the smallest unit of storage on the discs’
what’s the max number of sectors can the BIOS support per track?
how much data can each sector hold?
2-73
63
512 bytes
tell me the 3 components of the hard disk geometry
2-73
number of sectors
number of read/write heads in the disk assembly
number of cylinders in the assembly
tell me 5 spin rates for the platters
2-74
5400 7200 10,000 12,000 15,000
all of these are in rpm
SSDs use the same type of technology found in what?
2-75
flash memory
Optical Disc Capacities
- basic DVD (single sided, single layer)
- DVD dual sided, single layer
- DVD single sided, dual layer
- DVD dual sided dual layer
- blu ray single sided single layer
- blu ray single sided dual layer
- blu ray dual sided dual layer
4.7
9.4
8.5
17.1
25
50
100
all in GigiBytes
tell me the 4 DVD formats
2-83
DVD-ROM
DVD-R
DVD-RW
DVD-RAM
IDE. what does it stand for?
what do we call it now?
what do we favor instead?
2-84
integrated drive electronics
PATA
now we prefer to use SATA
you have a couple IDE drives.
if you use only one, where do you put the jumper?
what if drive 1 should be master and drive 2 should be slave?
2-87
nowhere
1 - put the jumper on pins 3 and 4
2 - put the jumper on pins 5 and 6
what do you install at both ends of the bus to keep the signals on the bus?
2-89
terminators
two types of cabling. what are they?
2-90
internal and external
what is the SCSI ID number used for?
2-92
giving a device a higher priority
slower devices get higher number and therefore higher priority
tell me the difference between RAID 0, 1, 5
2-92,93
0 - disk striping, need at least 2
1 - disk mirroring, need at least 2
5 - redundant striped volume set, need at least 3
how does a power supply provide power to the PC?
2-107
it steps down the voltage from 110 or 220 to 3.3, 5, and 12, and turns the AC into DC
the standard peripheral power connector is also called a what?
2-110
Molex connector
which power connectors are for floppies?
2-111
Berg
the original ATX system connector provided how many volts through how many pins?
2-112
6, 20
6 pin and 8 pin power connectors are for what?
2-114,115
the PCIe
how many pins on the ATX12V 2.x connector?
2-114
24
on your SD card, what does SD stand for?
2-95
secure digital
how much space is on a 3 1/2” floppy HD?
2-77
1.44 MB (incredible)
2 types of SSD
2-75
volatile DRAM and flash RAM
