Mass Storage Technologies Flashcards
(24 cards)
Hard drive
Split into sectors, 512 bytes or 4,096 bytes
SSD
Split into blocks, 1000 bytes
Optical media
Split inro tracks, around 100 bytes
LBA
Logical block assessing
Access as interface between os and storage device
Allocates necessary number of blocks per file to store
Kilo
1000
Kibi
1024
Mega
1,000,000
Mebi
1,048,576
Form factors
5.25 in
3.5 in, most dominant
2.5 in, org for laptop
1.8 in, not very popular
M.2, most popular for SSD
Magnetic disk drives
Metal disk read by little metal arm
Use spinning platters to store data via magnetism
Data is accessed through read write heads
HHD
Hard disk drive, has to have something spinning on the inside
ATA
Advanced technology attachment
Language used by HDD to communicate
PATA
Original ATA
Parallel ATA
Uses integrated drive electronics cables
SATA
Serial ATA type of cable/ connector used for ATA communication
ESATA
SATA designed to be used externally
Taken a backseat due to advancements in usb
RPM
Revelations per minute
Standard RPM values
5,400 rpm
7,200 rpm
10,000 rpm
15,000 rpm
SSD
Solid state drive, most popular
Lots of chips, no moving parts
Organized into pages
Single page is made of blocks
Most common form factors for ssds
2.5 3.5 and m.2
What type of connectors do some ssds use for power and data?
SATA cable
NVME
Non-volatile memory express
Used to communicate with SSDs
Mostly for M.2 drives
Much faster than SATA
SCSI
Small computer system interface
Language used to talk to a drive
SAS
Serial attached SCSI
Similar to SATA
ISCSI
Internet scsi used mostly on servers
