Check out this post, "3 Things You Can Do to Get the MOST Out of Your Network Fiber Cables" from TCS' Tom Hodson all about extending the life of your data center fiber. By following these 3 Simple steps you will increase your network uptime.
"It always amazes me how often cabling is the last thing we think of in the data center. It's true that on average cabling represents only 3-5% of the overall budget for most data centers, but it's truly one of the most important pieces of your infrastructure.
All your servers, storage and switches need to be powered up and connected to the network(s)..."