GCSE Computer Science Revision

Comparison of Secondary Storage Devices

Medium Type Capacity Speed of Access Portability Durability Reliability
HDD (Hard Disk Drive) 500GB - 10TB Slower Less portable Medium Good
SSD (Solid State Drive) 250GB - 4TB Faster More portable High Very Good
Optical (CD/DVD/Blu-ray) Up to 100GB (Blu-ray) Slower Highly portable Low Medium