Memory and backing storage (Characteristics/ advantages and disadvantages)

Characteristics of ROM

Smaller in size

Non - volatile

Read only

Characteristics of RAM

Larger in size

Volatile

Read and write

Advantages of fixed hard disk

Very fast access

Large capacity

Disadvantages of fixed hard disk

Not portable

Affected by magnetic feilds

Advantages of portable hard disk

Portable

Large capacity

Disadvantages of portable hard disk

More expensive

Affected by magnetic feilds

Advantages of magnetic tape

Very cheap

Very large capacity

Disadvantages of magnetic tape

Slow access speed

A seperate reader is needed

Affected by magnetic fields

Noisy

Characteristics of HDD

Bigger in size

Cheaper

Moving parts (can be damaged)

Little noise

Slower in speed

High power consumption

Unlimited amount of read and write

Larger storage space

Characteristics of SSD

Smaller in size

More expensive

No moving parts (more robust)

silent

Faster in speed

Low power consumption

Limited amount of read and write

Smaller storage space