Federated Systems
Today
Storage Layers
Model Federated Architecture
Performance Issues
Locality Management
Disk Review
Capacity Trends
Disk RPM Trend
Access Time (seek+RL) trend
Read performance
Storage Interfaces
Measurement Issues
Write-based FS
Writes are "easy"
Reads are hard
Proposals
Swarm
Swarm Performance
Recovery
GFS
File Cache
File System Metadata
Sharing Problem
GFS Solution: Locking
Federated Alternative
Author: Rich Martin
E-mail: rmartin@cs.rutgers.edu
Homepage: http://www.cs.rutgers.edu/~rmartin/teaching/fall99