Secondary Storage
- Created by: AMULLINS
- Created on: 06-02-17 11:33
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- Secondary Storage
- Optical
- Examples
- DVDs
- CDs
- Blu-Ray
- Cost
- Inexpensive but costs more depending on how much storage
- Capacity
- Has little storage compared to other storage devices
- Speed
- Loads data much slower than magnetic and solid state
- Fast enough for its puurpose
- Portability
- Too big to fit in a pocket but could easily fit in a bag
- Durability
- Can be scratched easily which would corrupt the data
- Data is stored physically using pits and lands
- Can be scratched easily which would corrupt the data
- Reliability
- Non-volatile memory
- Data is retained even when the power is lost
- Data cannot be overwritten once written once
- Non-volatile memory
- Examples
- Magnetic
- Examples
- Hard drives
- Magnetic tape
- Cost
- Relatively cheap compared to other storage methods
- Capacity
- Has a very large capacity of around 1TB
- Speed
- Moderate in speed
- Durability
- Can break easily as it has moving parts
- Affected by heat and magnetic fields
- Reliability
- Non-Volatile Memory - Data is not lost if the power supply is cut off.
- Very reliable but can be broken easily due to moving parts
- Portability
- Not very portable as it has moving parts.
- Need another device in order to read the data on the device
- Examples
- Solid-State
- Examples
- Solid State Drives
- Cost
- Quite expensive as it uses flash memory
- Capacity
- Can hold large amounts of data (up to 4tb)
- Large amounts of data storage is very expensive
- Speed
- Can boot up a device in just seconds
- Very fast as no moving parts
- Portability
- Very portable as it is very durable
- Needs a monitor to output the data on the drive to the user
- Durability
- There are no moving parts so it is more likely to keep the data safe.
- Won't break as easily if dropped
- Reliability
- Non-Volatile Memory - Data is not lost if the power is lost
- Very reliable and cannot be broken easily as data is stored on flash memory chips rather than by moving parts
- Examples
- Optical
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