SAN School Answer #5 |
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By SearchStorage.com editors
13 Aug 2003 | SearchStorage.com |
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Question #5
Cables are what ties everything together in a SAN. When choosing your cables and setting them up, you should do all of the following except:
a. Keep in mind that the smaller the core of the cable the farther the light can pass through it.
b. Choose a large cable since it has a greater probability of signal loss than a smaller cable.
c. Try to make sure the cables are straight for the least amount of signal loss.
d. Select a cable with a minimum radius of between 1 1/4 and 1 1/2.
The correct answer is:
b. Choose a large cable since it has a greater probability of signal loss than a smaller cable.
Learn more:
Cables are an important part of the SAN design because pinched, misaligned, or bent cables can result in signal loss and ultimately can make the SAN stop. Your cables should be straight,
What makes a san stop
Signal loss can be a result of misaligned cables
Congestion can make a san stop—the least amount of devices vying for a single resource the better. 7:1 is a good starting point
Pinched cable (micro bends) can also give you a signal loss
Macro Bends—the straighter the cable, the better the signal will be through the cable and the less signal loss you'll have through the cable. Rule of thumb is to have a minimum radius of between 1 ¼ to 1 ½ .
For more on cables, see also:
Tame SAN cable trouble
Building a SAN from A to Z
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