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Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems by Marc Farley

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Requirements for Storage I/O

Storage networks have unique requirements for performance, reliability, and integrity that differentiate them from other types of networks. This section analyzes the requirements for each of these three categories.

Performance Requirements

There are two meaningful performance areas in storage networking: bandwidth and latency.

Bandwidth

Bandwidth is the total amount of data traffic that a network can accommodate. It is typically measured in megabits per second or megabytes per second.

Bandwidth measurements are meaningful for host bus adapters (HBAs), network links, switching hardware, and storage controllers. In general, 100 Mbps and 1 Gbps are commonly used with network access server (NAS) products. 1 Gbps, 2 Gbps, ...

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