Re: RAC Vs Standby Database between Primary and Secondary Data Centers

From: Nigel Thomas <>
Date: Wed, 23 Jan 2008 10:15:49 -0800 (PST)
Message-ID: <>

I think there's a further slant to "Dark Fiber" (aka fibre). If you want dark fiber over long (off campus) distances, you're going to lease or buy it from a carrier (eg a LEC). In effect you are asking for *dedicated* strands (you're not sharing the capacity, so there's no issue of brownouts on the bandwidth). You are of course also asking for an optical fiber link from your datacenters through to the long distance "dark" fiber. That's where the extra moolah comes in - or rather, it goes out.

Regards Nigel

  • Original Message ---- From: "Mercadante, Thomas F (LABOR)" <> Sent: Wednesday, January 23, 2008 1:52:58 PM Dick,

My understanding of "Dark Fiber" is this. When fiber optic cable is installed, sometimes all of the individual fiber strands are not used. These are then "dark". So Dark Fiber is simply using spare strands in the larger cable. <snip>
-- Received on Wed Jan 23 2008 - 12:15:49 CST

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