It is here that the economics of EoF/EoWDM will
begin to dominate. Specifically, EoF will make sense for smaller service providers offering
less-critical full-rate LAN extension at lower price-points, for example, competitive
local exchange carriers (CLEC). Meanwhile larger operators??”particularly those with
built-out WDM infrastructures??”can target high-density/longer distance EPL interconnections
with robust OAM support.
Storage Area Networks (SAN) Scenarios
Many corporations are dispersing critical data over wide geographic areas using storage
networking concepts (SAN). Again, there are various applications of interest here.
Foremost is disaster recovery (via remote backup) to ensure mission-critical operation
during natural disasters, power outages, and so on. Another requirement is for real-time,
synchronized mirroring (replication) of data at different sites for load-balancing, business
scaling/productivity, and so on. Finally, the storage-on-demand market is also being
explored by some provider organizations. In all of these settings, geographic diameters
are generally limited to 100 km, although these are expected to scale over the years.
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