What is Secondary Storage?
Secondary storage holds data and programs permanently, even when the computer is turned off.
Characteristics of Secondary Storage
- Non-volatile: Retains contents even when the computer is turned off.
- Slower access times compared to primary storage.
- Larger capacity.
Examples include the Hard Disk Drive (HDD), which uses physical disks and mechanical heads, the Solid State Drive (SSD), which uses flash memory, and the flash drive, a portable form of secondary storage.
HDD vs SSD
| HDD | SSD |
|---|---|
| Uses physical disks and mechanical heads | Uses flash memory |
| Slower access times | Faster access times |
| More affordable | More expensive |
