Frequently asked questions-Storage Area Network FAQSAN planning <<previous|next>> :How does IP storage differ from iSCSI, NAS and Fibre Channel?
How far apart can SAN locations be?
Latency can exist in a data center, a campus or a metropolitan area even where you have fast dedicated networks. If there is any network bottleneck or congestion, or anything that causes delays, delays are latency, and those work against distance. So, when you're looking at long distances, don't just consider bandwidth; also evaluate the effective latency and understand the application's sensitivity to that delay.
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09 Jan 2007