By Rakin Chowdhury
There Are 3 Types of secondary stoarage
There are 4 things to look at when you are picking which type is best for you:
Optical storage uses light light to recive imformation, so naurally it is call optical storage.
Cds can store 700 mb
DVD can store 7-16 GB
Cds and DVDs are very cheap.
CDs have a ascess sped of 7 mb/s
DVDs have a acsess speed 16 mb/s
They both can last 7-15 years.
Iternal Flash storage, USB sticks and Memoet cards are all types of flash Storage devises.
KEY = internal U= USB C = CARD
Cost: Internal - 128GB=£120 USB - 32GB = £45 Card-32GB=£25
Capacity IN-256GB U-64GB C-128GB
Speed: IN = 6GB/s U- 480MB/s C-?
Prortability: IN- N/A U-Very Small C- Very small
Durability: IN-very durabile U- very durable C-not very durable
Internal harddisks, Portable Harddisks and, magnetic are all types of magnectic storage.
KEY = Harddisks- H Protable = P Tape = T/M
Cost: H & P= Very cheap 1TB = £90 T- 72GB = £10
Capacity: all up to 1TB
Speed: H-3GB/s P- 480MB/s M = VERY slow
Prortability: H- N/A P- Can fit in large pocket M- can be compact.
Durability: H&P- Extramly Durable T- Very Reliable if not damaged