|Thread Links||Date Links|
|Thread Prev||Thread Next||Thread Index||Date Prev||Date Next||Date Index|
There is no specified reach for backbone cabling – it is limited only by the size of the data center. So this is indeed different from horizontal cabling, which is generally limited to 100 m except when centralized optical fiber configurations are used, in which case horizontal cabling is limited to 300 m.
OM3 is the most commonly specified fiber type specified by my clients for backbone cabling in data centers. The mix of installations using parallel fibers (i.e. terminated on MPOs) increasingly common. I would say that at least half of my clients are now using fibers terminated on MPOs regardless of distances, as they simplify installation and reduce the need for skilled labor.
Can you provide some clarification for those of us not well-versed in data center fiber optic cabling installation practices?
Is there a specified reach for a backbone? Is that a different specification from horizontal cabling?
In your estimation, how many backbones have OM3 fiber deployed in them? For the 150m fiber deployments, are they parallel fibers? Or is there an assumption that WDM optics will be used?
It would help tremendously to understand these items as they relate to a possible modification of the reach and the impact in the architectures and relative costs.
From: Jonathan Jew [mailto:email@example.com]
I am a consultant with over 25 years
experience in data center