Parity is computed locally at client. Distributed state updated atomically using deltas. Zebra stripes across all storage servers. Open Issues Scalable, distributed meta-data management and reconfiguration. Scalable log cleaning.
Entry specifies a specific machine.
Helps do load balancing. Have an order of magnitude more entries than managers. Old managers send state to a new manager to distribute load. Relatively small and slowly changing. Managers keep track of cache consistency information and disk block pointers.