Accessibility and Data Movement#
Where data lives affects how you can use it
Network bandwidth: Moving terabytes takes time
Physical proximity: Data locality matters (latency, throughput)
Access patterns: Random vs sequential differs drastically
Key Terms
Latency: Time delay to access data
Throughput: Volume of data transferred per unit time
The Data Movement Problem
Sometimes it’s faster (and more practical) to ship a hard drive than transfer over the network