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Intro to Computingfundamentals~5 mins

Storage devices (HDD, SSD) in Intro to Computing - Cheat Sheet & Quick Revision

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Recall & Review
beginner
What does HDD stand for and what is its main storage technology?
HDD stands for Hard Disk Drive. It stores data on spinning magnetic disks called platters, using a moving read/write head to access data.
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beginner
What is an SSD and how does it differ from an HDD?
SSD stands for Solid State Drive. It stores data on flash memory chips with no moving parts, making it faster and more durable than HDDs.
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beginner
Which storage device is generally faster: HDD or SSD?
SSD is generally faster because it accesses data electronically without moving parts, unlike HDD which uses mechanical movement.
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intermediate
Name one advantage and one disadvantage of HDDs compared to SSDs.
Advantage: HDDs usually cost less per gigabyte and offer larger storage capacity. Disadvantage: They are slower and more prone to damage due to moving parts.
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intermediate
Why are SSDs more durable than HDDs?
SSDs have no moving parts, so they are less likely to break from drops or shocks, unlike HDDs which have spinning disks and mechanical heads.
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Which storage device uses spinning disks to store data?
ARAM
BSSD
CUSB flash drive
DHDD
What is a key benefit of SSDs over HDDs?
ALower cost per GB
BUses magnetic storage
CFaster data access
DMore moving parts
Which device is more likely to be damaged by physical shock?
AHDD
BSSD
CBoth equally
DNeither
Which storage device typically offers larger storage capacity for a lower price?
AHDD
BRAM
CSSD
DOptical drive
What type of memory do SSDs use to store data?
AMagnetic disks
BFlash memory chips
COptical discs
DVolatile RAM
Explain the main differences between HDD and SSD storage devices.
Think about how data is stored and accessed physically.
You got /4 concepts.
    Describe a real-life analogy to help understand how HDDs and SSDs work differently.
    Compare to devices you use to play music or store files.
    You got /4 concepts.

      Practice

      (1/5)
      1. Which of the following is true about HDDs compared to SSDs?
      easy
      A. HDDs have moving parts and are generally slower than SSDs.
      B. HDDs use flash memory and are faster than SSDs.
      C. HDDs are more expensive than SSDs for the same storage size.
      D. HDDs do not store data when the power is off.

      Solution

      1. Step 1: Understand HDD technology

        HDDs use spinning disks and mechanical parts to read/write data, which makes them slower.

      2. Step 2: Compare with SSDs

        SSDs use flash memory with no moving parts, making them faster and more durable.

      3. Final Answer:

        HDDs have moving parts and are generally slower than SSDs. -> Option A

      4. Quick Check:

        HDD = slower with moving parts [OK]
      Hint: Remember: HDDs spin, SSDs flash [OK]
      Common Mistakes:
      • Confusing HDDs as faster than SSDs
      • Thinking HDDs use flash memory
      • Believing HDDs lose data when powered off
      2. Which option correctly describes a Solid State Drive (SSD)?
      easy
      A. An SSD uses flash memory and has no moving parts.
      B. An SSD uses spinning disks to store data.
      C. An SSD is slower than an HDD.
      D. An SSD loses data when power is off.

      Solution

      1. Step 1: Identify SSD storage method

        SSDs store data using flash memory chips without any moving parts.

      2. Step 2: Confirm data retention and speed

        SSDs keep data without power and are faster than HDDs.

      3. Final Answer:

        An SSD uses flash memory and has no moving parts. -> Option A

      4. Quick Check:

        SSD = flash memory, no moving parts [OK]
      Hint: SSD = flash memory, no spinning disks [OK]
      Common Mistakes:
      • Thinking SSDs have spinning disks
      • Believing SSDs are slower than HDDs
      • Assuming SSDs lose data without power
      3. Consider this comparison: You copy a 10GB file to an HDD and an SSD. Which is true about the time taken?
      medium
      A. The HDD will copy the file faster because it has spinning disks.
      B. The SSD will copy the file faster because it has no moving parts.
      C. Both will take the same time because storage size is equal.
      D. The SSD will take longer because flash memory is slower.

      Solution

      1. Step 1: Understand data transfer speeds

        HDDs use mechanical parts which slow down data transfer compared to SSDs.

      2. Step 2: Compare SSD speed advantages

        SSDs use flash memory allowing faster read/write speeds without mechanical delays.

      3. Final Answer:

        The SSD will copy the file faster because it has no moving parts. -> Option B

      4. Quick Check:

        SSD faster than HDD due to no moving parts [OK]
      Hint: No moving parts means faster data transfer [OK]
      Common Mistakes:
      • Assuming spinning disks are faster
      • Ignoring mechanical delays in HDDs
      • Thinking storage size affects speed equally
      4. A user complains their SSD is slower than expected. Which of these could be a reason?
      medium
      A. The SSD is powered off during use.
      B. The SSD uses spinning disks that are damaged.
      C. The SSD is connected via a USB 3.0 port.
      D. The SSD is nearly full, reducing its speed.

      Solution

      1. Step 1: Identify SSD speed factors

        SSDs slow down when nearly full due to less free space for efficient data management.

      2. Step 2: Eliminate incorrect reasons

        SSDs have no spinning disks, USB 3.0 is fast enough, and powered off means no operation.

      3. Final Answer:

        The SSD is nearly full, reducing its speed. -> Option D

      4. Quick Check:

        Full SSDs slow down [OK]
      Hint: Full SSDs lose speed, unlike HDD damage [OK]
      Common Mistakes:
      • Thinking SSDs have spinning disks
      • Believing USB 3.0 slows SSDs
      • Assuming SSD works when powered off
      5. You want to upgrade your computer for faster boot times and durability. Which storage device should you choose and why?
      hard
      A. Choose an HDD because it is cheaper and has moving parts.
      B. Choose an HDD because it stores data only when powered on.
      C. Choose an SSD because it is faster and has no moving parts.
      D. Choose an SSD because it uses spinning disks for durability.

      Solution

      1. Step 1: Identify requirements

        Faster boot times and durability require fast data access and no mechanical parts.

      2. Step 2: Match device features

        SSDs are faster and more durable due to no moving parts; HDDs are slower and fragile.

      3. Final Answer:

        Choose an SSD because it is faster and has no moving parts. -> Option C

      4. Quick Check:

        SSD = fast + durable [OK]
      Hint: SSD = speed + durability, HDD = slower + fragile [OK]
      Common Mistakes:
      • Choosing HDD for speed
      • Thinking HDD stores data only when powered
      • Believing SSD has spinning disks