DIGITAL STORAGE
by Mohd Hasyrin Hassan
1. Cloud Storage: Internet service that provided for computer or other gadget.
2. Hard Disk
2.1. Known as Hard disk drive (HHD) contain one or more inflexible .and use magnetic plate
3. Function
3.1. 1) store instruction. 2) Store Data. 3)Store information
4. RAID
4.1. Definition : ( Aray of independent disk)..group of two or more integrated hard-drive.
5. External hard drive.
5.1. Definition : separated freestanding storage device that connect with cable to a USB port or other port on a computer or mobile device
6. Characteristic
6.1. 1) Track. 2)Sector. 3)Platter. 4) revolution per minute. 5)Read/Write Head. 6)Form Factors
7. SSD (Solid State drive)
7.1. Definition : FLASH memory storage device that contains it own processor to manage it's storage
8. Advantage
8.1. 1) Quieter operation. 2) More durable. 3)lighter weight. 4)longer life. 5)Faster transfer rate. 6)Less Heat generation. 7)Less power consumption. 8)Faster Access Time.
9. Optical Disk : Consist of flat, round,portable disc that written / read by disc.
9.1. 1) CD-ROM. 2)CD-R. 3)CD-RW. 4)DVD-ROM. 5)DVD-R / DVD + R.
10. Enterprise storage : Allow large organization to manage/store data/information using devices from heavy uses, maximum availability
10.1. 1) Network attach storage (NAS). 2) Storage area network (SAN). 3)Tape
11. Portable Flash : Removable flash memory storage device.
11.1. 1) Micro SDXC. 2)CF. 3)M2. 4)Memory stick pro Duo. 5)XD picture card.
12. Cloud Storage: keeps storage on the server in the internet.
13. Definition: Medium that keeps data,information,programs and application in a computer.
14. Access time measure
14.1. 1) Time required to deliver on item from memory to the processor
14.1.1. Amount of time take by storage device to locate on a storage device.
15. Storage device : Record / retrive item from storage media
16. Reading
16.1. transfer item from storage medium to memory
17. writing
17.1. Transfer item from memory to a storage device
18. Volatile : Any data/ information content remains when the power is removed.
18.1. 1) Screen display
18.1.1. 2) RAM