Storage Devices Flashcards
1
Q
Optical Format
A
- Small bumps read with a laser beam
- Microscopic binary storage
2
Q
Compact Disc ROM
CD-ROM
A
-700MB Capacity
3
Q
Digital Versatile Disc
DVD-ROM
A
- 4.7 Gigabytes (GB) for single layer
- 8.5 Gigabytes for dual layer
4
Q
Blu -Ray
A
- 25 Gigabyte for single layer
- 50 Gigabytes for dual layer
5
Q
Writing to Optical Media
Burners
A
- Don’t create bumps
- They darken photosensitive dye
-Compact Disc - Rewritable (CD-RW)
- DVD Read & Rewritable (DVD-R / RW)
- And Dual layer (DVD-R DL)
-Blu-Ray Disc Recordable (BD-R)
6
Q
Hard Disk Drive
HDD
A
-Consists of spinning platters spinning very quickly
Rotational Speed Average Latency
10,000 3ms
7,200 4.16ms
5,400 5.55ms
7
Q
HDD Parts
A
- Platter = Where memory is stored
- Spindle = Spins the platter(s)
- Actuator = Moves arm to specific location
- Arm = Holds the Head (Reader)
- Head = Used to write & read info on the platter
8
Q
Solid - State Drive
SSD
A
- Flash base memory
- No more moving parts
- Designed to replace HDD
9
Q
Solid -State Hybrid Drive
SSHD
A
- Has both spinning and SSD in a single device
- SSD caches the slower spinning hard drive
- Looks like a normal hard drive or SSD
10
Q
Hot-Swappable Drives
A
- Add or remove while system is running
- USB
- Firewire
- SATA, eSATA
11
Q
USB Flash Memory
A
- EEPROM = Electronically Erasable Programmable Read Only Memory
- Non-Volatile = no power is required
- Limited number of writes
- Not designed for archival storage
12
Q
Flash Memory
A
- USB Flash Drive
- Compact Flash (CF)
- Secure Digital (SD)
- MiniSD
- MicroSD
-xD - Picture card
13
Q
Tape Drives
A
- Magnetic tape
- Sequential storage
- Various sizes
- 100GB to multiple terabytes per cartridges
-Inexpensive long-term setup
- Linear Tape - Open (LTO)
- The Ultrium form-factor
