Know and understand advantages and disadvantages of using cloud storage compared to other methods

Published by Patrick Mutisya · 14 days ago

ICT 0417 – Networks: Cloud Storage vs. Other Methods

4. Networks and the Effects of Using Them

Objective

Know and understand the advantages and disadvantages of using cloud storage compared to other storage methods.

1. What Is Cloud Storage?

Cloud storage is an online service where data is stored on remote servers managed by a third‑party provider and accessed over the Internet. Users typically pay for the amount of space they use and can retrieve their files from any device with an Internet connection.

2. Common Alternative Storage Methods

  • Internal hard‑disk drive (HDD) or solid‑state drive (SSD) in a computer

  • External USB or Thunderbolt drives

  • Network‑Attached Storage (NAS) devices on a local area network (LAN)

  • Optical media (CD, D \cdot D, Blu‑ray)

  • Physical media such as magnetic tapes

3. Comparison of Cloud Storage with Other Methods

AspectCloud StorageLocal / Physical Storage
AccessibilityAvailable from any device with Internet access; supports collaboration.Limited to the device or network where the media is physically connected.
Cost StructureSubscription‑based; pay‑as‑you‑go. Example: cost per GB \$C = \frac{P}{G}\$ where \$P\$ is monthly price and \$G\$ is GB provided.One‑off purchase of hardware; ongoing costs for upgrades, power, and maintenance.
ScalabilityVirtually unlimited; increase space instantly.Limited by physical capacity; requires new hardware to expand.
Data SecurityProvider implements encryption, redundancy, and physical security, but data is stored off‑site and subject to provider policies.Owner controls security; risk of loss or damage if hardware fails or is stolen.
Reliability & RedundancyData replicated across multiple data centres; high uptime guarantees.Typically single point of failure unless user implements own backup strategy.
Speed of AccessDepends on Internet bandwidth; large files may download slowly.Local access is usually faster; limited only by device I/O speed.
Control & OwnershipData stored on third‑party servers; terms of service apply.Full ownership and control over hardware and data.
Environmental ImpactShared data centres can be energy efficient per GB stored.Individual devices consume power; multiple redundant copies may increase waste.

4. Advantages of Cloud Storage

  • Easy access from anywhere, supporting remote learning and collaboration.

  • Automatic backups and versioning reduce risk of data loss.

  • Scalable storage eliminates the need for frequent hardware upgrades.

  • Reduced need for local maintenance and physical security measures.

  • Often includes integrated sharing tools (e.g., links, permissions).

5. Disadvantages of Cloud Storage

  • Reliance on a stable Internet connection; outages can block access.

  • Ongoing subscription costs can exceed one‑off hardware purchase over time.

  • Potential privacy concerns; data may be subject to provider’s jurisdiction.

  • Limited control over server location and hardware specifications.

  • Large file transfers can be time‑consuming on slower networks.

6. When to Choose Cloud Storage

  1. When users need to access files from multiple devices or locations.

  2. When collaboration and real‑time sharing are essential.

  3. When an organisation wants to minimise on‑site hardware maintenance.

  4. When data redundancy and disaster recovery are priorities.

7. When to Prefer Local / Physical Storage

  1. When working with very large media files that require high transfer speeds.

  2. When Internet connectivity is unreliable or unavailable.

  3. When strict data sovereignty or confidentiality regulations apply.

  4. When a fixed, one‑off cost is preferred over recurring fees.

Suggested diagram: Cloud storage architecture showing user devices, Internet, and provider data centre with redundancy.

8. Summary

Cloud storage offers flexibility, scalability, and built‑in redundancy, making it ideal for modern, collaborative environments. However, it depends on Internet connectivity and involves ongoing costs and potential privacy issues. Traditional storage methods provide faster local access and full control but require proactive management and physical security. Choosing the right solution depends on the specific needs, resources, and risk tolerance of the user or organisation.