interface ( SATA ) Flashcards
the initial formatting of a HDD, done by the manufacturer, where each side of each platter is divided into circular tracks, and each track contains a number of sectors, each with the capacity of 512 bytes
low level formatting, also called geometry
What are the main formats of HDD’s
- 5 used in PC’s
2. 5 used in laptops
high performance drives are rate between
15,000 - 10,000 rpm
average drives are rated between
7200 - 5400 rpm
this occurs as the read/write head locates a particular position on a HDD
delay latency
high performance drives will have an access time of ?
below 3 ms
a measure of how fast read/wire operations are performed on the disk platters
internal transfer rate
measures how fast data can be transferred to the CPU across the bus
External transfer rate
the number of hours that a device should operate before a critical incident can be expected
mean time between failures (MTBF)
is the duration for which the device can be expected to remain reliable
life expectancy
a HDD feature that passes status information and alerts back to monitor software
self monitoring analysis and reporting technology (S.M.A.R.T.)
SSD uses what type of memory
flash memory
HDD’s uses this technology to communicate with its buses
advanced host control interface (AHCI)
SDD’s use this technology to communicate with its buses
NVM express (NVMe)
legacy type of memory card installed as part of the motherboards chipset
embedded MMC (eMMC)
SATA devices include
HDD, SSD, CD, DVD, Blu-Ray
this storage device is most commonly used for data backing up all hard drives in a system
tape drives
SATA1 provides a data transfer rate
1.5 Gbps
SATA2 provides a data transfer rate
3 Gbps
SATA3 provides a data transfer rate
6 Gbps
CD has a capacity of
700 MB
DVD single layer has a capacity of
4.7 GB
DVD dual layer has a capacity of
8.5 GB
Blu-ray single layer has a capacity of
25 GB
Blu-ray double layer has a capacity of
50 GB
