Compaq Storageworks Raid Array 4000 Using Infrastructure Cabling - Compaq StorageWorks 4000 - RAID Array White Paper

Understanding Compaq StorageWorks RAID Array 4000 and Infrastructure Cabling
Compaq StorageWorks RAID Array 4000 Using
Infrastructure Cabling
Consider the scenario in which the server is located several floors away from its storage:
A server is located in the telecommunications closet on the n
to a hub and storage arrays located in the basement. Connecting the server to the hub requires
infrastructure cabling. What type of infrastructure cabling will work?
To select an appropriate fiber type, measure the length of the backbone cable and determine the
data transmission rate. Remember, data transmission rates and attenuation limit distance
capability.
Table 5. Appropriate fibre channel cable type at 100 MB/s
Distance between components
0 m and
200 m and
500 m and
Using Existing Cabling or Installing New Cabling
If you determine that 62.5 micron fiber will support your configuration and you have 62.5 micron
installed in the building, you can use the existing fiber.
Note: Compaq does not require that the bandwidth of all cables be measured. Measurement of
existing fiber only needs to be done if the bandwidth value is unknown.
The manufacturer measures the bandwidth of new fiber. Therefore, a bandwidth measurement is
not necessary for new fiber for which the bandwidth is already known.
Be sure to consider any plans for expanding the system and using increased data transmission
rates. To support expansion and increased data transmission rates, 50 micron fiber or 9 micron
fiber may be required.
If you have no fiber cable installed in the building, Compaq recommends that you use 50 micron
fiber. The primary standard for fibre channel connections is 50 micron fiber which allows
flexibility for system expansion and supports faster data transmission rates across greater
distances.
If you have no fiber installed, or if 62.5 micron does not satisfy distance requirements, the choice
between 50 micron and 9 micron fiber depends on current and future configuration requirements
and the use of faster data transmission rates.
ECG02030699A
Use
á
300 m 62.5, 50, or 9 micron fiber
á
50 or 9 micron fiber
500 m
á
10 km 9 micron fiber
th
floor of a building and will connect
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