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What is secondary storage?
What is secondary storage?
Secondary storage, also known as external memory or auxiliary storage, refers to the various types of storage devices that a computer can use to store data permanently, even when the power is turned off. These storage devices include hard drives, solid-state drives, external hard drives, USB drives, CDs, DVDs, and tape drives.
Secondary storage provides a larger storage capacity than primary storage (such as RAM) and is typically used to store files, documents, music, videos, and other types of data that need to be saved for later use. Unlike primary storage, secondary storage is not directly accessible by the CPU, and data must be transferred to and from primary storage before it can be processed.
Solid State
Solid State
Solid-State Drive (SSD): This type of storage device uses flash memory to store data and is faster, more reliable, and more expensive than an HDD
Uses: Portable computers, Personal computers and military usage
Formats: SSD, NVMe drive
Magnetic
Magnetic
Hard Disk Drive (HDD): This is a traditional type of storage device that uses a spinning disk to store data. It is relatively inexpensive, but also slower and less reliable than other types of storage.
Uses: Personal Computers
Formats: HDD
Optical
Optical
CD/DVD: These are optical storage devices that can be used to store data and music and can be played on a computer or a standalone player.
Uses: Songs, video and other multimedia storage
Formats: CD-ROM, DVD, Blu-ray
What are the advantages and disadavantages of each type?
What are the advantages and disadavantages of each type?
Solid State
Solid State
Pros:
Faster read and write speeds compared to traditional magnetic storage devices
More durable and resistant to physical shocks and damage -robust
Lower power consumption, resulting in longer battery life for mobile devices
More reliable, with no moving parts to fail
Cons:
Generally more expensive than traditional magnetic storage devices
Limited write cycles which could result in data loss over time in case of heavy usage
Magnetic
Magnetic
Pros:
Lower cost per gigabyte compared to solid state storage
Higher storage capacity than solid state storage
Widely available and compatible with most computers and devices
Generally more reliable and longer lifespan than other types of storage
Cons:
Slower read and write speeds than solid state storage
More vulnerable to physical damage, such as scratches or dust (not robust)
Optical
Optical
Pros:
Can store large amounts of data
Can be used to store music and movies
Can be played on a computer or standalone player
Can be used as a backup and archiving storage
Cons:
Generally slower read and write speeds than solid state and magnetic storage
Prone to physical damage, such as scratches or dust
More susceptible to data loss in case of power failure
Limited lifespan, as the media degrades over time
Not suitable for high-speed data transfer
Becoming less popular as digital downloads and cloud storage become more prevalent.
What storage type is appropriate for a digital camera?
What storage type is appropriate for a digital camera?
Answer- Solid State as it not damaged by shocks and vibrations and has not moving parts which may be damaged. It is also power efficient and quick at accessing data.
What storage type is appropriate for someone wanting to distribute a song they made?
What storage type is appropriate for someone wanting to distribute a song they made?
Answer - Although there is no wrong or right answer if you give the right justification, the 2 main types that stand out for this are optical and solid state. Optical could be chosen as it is cheap and portable , the second option is solid state such as a USB stick as it is portable, robust and can be used by more people due to the decline in popularity of CD players.
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