1.2.2 Flashcards
What is secondary storage ?
Storage that is non-volatile and can be used to save and store data that can be accessed repeatedly
Is secondary storage faster to access than primary storage ?
No, it is slower to access then primary storage.
What are 7 storage characteristics ? mnemonic : Cress Didn’t Pick Any Costly Reactions
- Capacity
- Durability
- Portability
- Access speed
- Cost
- Reliability
What are the 3 types of secondary storage ?
- Magnetic storage
- Optical storage
- Solid state storage
What are some examples of magnetic storage ?
- Hard disk drive
What are some examples of optical storage ?
- CD
- DVD
- Blu-ray
What are some examples of solid state storage ?
- Solid state drives.
- USB flash drive
- Memory cards. e.g. SD card
What are the advantages of a magnetic storage (hard disk drive) ?
- Large capacity.
- Cheap cost per gigabyte than solid-state.
- Durable and Portable.
- The moving parts should not be moved when powered on because it can cause damage to the device.
What are the disadvantages of magnetic storage (hard disk drive) ?
Slower access speed than solid state, but faster than optical storage.
What are the advantages of optical storage ?
- Portable - very thin
- Cheap - buy in bulk
What are the disadvantages of optical storage ?
- Low capacity
- Not durable - discs are fragile and can break/scratch easily.
- Slowest access speed - optic disk