Types of Secondary Storage

Magnetic Storage

• Hard Disk Drives (HDDs):
  • Use spinning disks and magnetic heads to store data.
  • High storage capacity, but can be slow and prone to mechanical failure.
• Magnetic Tapes:
  • Use magnetic tape to store data.
  • Often used for data backup and archiving.

Solid-State Storage

• Solid-State Drives (SSDs):
  • Use flash memory to store data.
  • Faster access times, lower power consumption, and more durable than HDDs.
• Flash Drives:
  • Small, portable devices that use flash memory.
  • Used for transferring files between computers.

Optical Storage

• CDs (Compact Discs):
  • Use lasers to read and write data.
  • Often used for music and software distribution.
• DVDs (Digital Versatile Discs):
  • Use lasers to read and write data.
  • Higher storage capacity than CDs.
• Blu-ray Discs:
  • Use lasers to read and write data.
  • Higher storage capacity than DVDs.

Other Types

• Hybrid Drives:
  • Combine different storage technologies, such as HDDs and SSDs.
  • Offer a balance between storage capacity and performance.
• Cloud Storage:
  • Stores data remotely over the internet.
  • Accessible from multiple devices.