HP StorageWorks 2/128 HP StorageWorks SAN Director 2/128 Installation Guide, V - Page 63

HP StorageWorks, Features 4.2.x User Guide, remove and replace the port card

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Installing and Configuring the SAN Director 2/128 Caution: Do not route the cables in front of the air exhaust vent, which is located at the top of the port side of the chassis. Arrange the cables so that the minimum bend radius is not exceeded; for a 50-micron cable, the minimum bend radius is 2 inches under full tensile load and 1.2 inches with no tensile load. Tie wraps are not recommended for optical cables because they are easily overtightened and can break the optical cables. To keep LEDs visible and make it easy to replace components, route cables down in front of the cards, not across adjacent cards or in front of the power supplies. Figure 14 provides an example in which cables for each card are routed in front of that card and are out of the way of other components. Leave at least one meter of slack for each fiber optic cable. This provides room to remove and replace the port card, allows for inadvertent movement of the rack, and helps prevent the cables from being bent to less than the minimum bend radius. Use the cable guides provided with the SAN Director 2/128 to group the cables. These guides help to keep individual ports accessible by keeping the cables evenly spaced. If ISL Trunking is in use, grouping the cables by trunking group is recommended. The ports are color-coded to indicate which ports can be used in the same ISL Trunking group: four ports marked with solid black ovals alternate with four ports marked with oval outlines. Note: ISL Trunking is a Fabric OS feature that enables distribution of traffic over the combined bandwidth of up to four ISLs between two directly adjacent switches, while preserving in-order delivery. For more information, refer to the HP StorageWorks Features 4.2.x User Guide. SAN Director 2/128 Installation Guide 63

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Installing and Configuring the SAN Director 2/128
63
SAN Director 2/128 Installation Guide
Caution:
Do not route the cables in front of the air exhaust vent, which is
located at the top of the port side of the chassis. Arrange the cables so that the
minimum bend radius is not exceeded; for a 50-micron cable, the minimum
bend radius is 2 inches under full tensile load and 1.2 inches with no tensile
load. Tie wraps are not recommended for optical cables because they are
easily overtightened and can break the optical cables.
To keep LEDs visible and make it easy to replace components, route cables down
in front of the cards, not across adjacent cards or in front of the power supplies.
Figure 14
provides an example in which cables for each card are routed in front of
that card and are out of the way of other components.
Leave at least one meter of slack for each fiber optic cable. This provides room to
remove and replace the port card, allows for inadvertent movement of the rack,
and helps prevent the cables from being bent to less than the minimum bend
radius.
Use the cable guides provided with the SAN Director 2/128 to group the cables.
These guides help to keep individual ports accessible by keeping the cables evenly
spaced. If ISL Trunking is in use, grouping the cables by trunking group is
recommended. The ports are color-coded to indicate which ports can be used in
the same ISL Trunking group: four ports marked with solid black ovals alternate
with four ports marked with oval outlines.
Note:
ISL Trunking is a Fabric OS feature that enables distribution of traffic over the
combined bandwidth of up to four ISLs between two directly adjacent switches, while
preserving in-order delivery. For more information, refer to the
HP StorageWorks
Features 4.2.x User Guide
.