MASSIVELY-PARALLEL AND REAL-TIME
STORAGE (MARS) ARCHITECTURE
 

• example of a Distributed-Storage-based architecture
• consists of the following: a set of independent storage nodes, a high speed interconnect and a central manager (fig. 10-6)

• central manager
• responsible for data distribution and retrieval, admission and access control
• provides QoS quarantees
• how?
• performs admission control, accepting or rejecting client requests
• reserves resources such as network and storage bandwidth
• shedules data reads/writes by exchanging control information with the storage nodes
• but: does not participate in actual data movement
 
• high speed interconnect
• used to connect the storage nodes with the central manager
• can be a bus, a ring or even some kind of general purpose switch