HP StorageWorks SAN Director Installation Guide (A7393-90009, May 2007)

Installing FRUs130
To keep LEDs visible and prevent having to disconnect cables when removing neighboring cards,
route fiber optic and other cables directly down, instead of across adjacent cards or in front of the
power supplies.
Leave at least one meter of slack for each fiber optic cable when you connect them. This provides
room to remove and replace the port blade, allows for inadvertent movement of the rack, and helps
prevent the cables from being bent to less than the minimum bend radius (the minimum bend radius
for a 50-micron cable is 2 inches under full tensile load and 1.2 inches with no tensile load).
Use the cable pillars provided to group the cables by trunking ports (groups of four or eight
neighboring ports). The cable pillars help to keep individual ports accessible by keeping the cables
evenly spaced; they also help to provide clearance for removing a neighboring card. Cable pillars
are not supported when using the FC32 port blades because the cable count is too dense, leaving
no room for the cable pillars. Use velcro tabs to group cables for the FC4-32 port blades.
CAUTION: Do not route the cables in front of the air exhaust vent (located at the top of the front of
the chassis). Do not use tie wraps for optical cables; they are easily overtightened.
B
Replacing a blower assembly
This procedure provides instructions for replacing a 4/256 SAN Director blower assembly. The
4/256 SAN Director requires a minimum of two operating blower assemblies at all times. To ensure
continuous adequate cooling, maintain three operating blower assemblies at all times except for the
brief period when replacing a blower assembly. The port blades automatically shut down if the
internal temperature range is exceeded (up to 75º Celsius).
CAUTION: If more than one blower must be turned off at the same time, the 4/256 SAN Director
should be turned off to prevent overheating.
B
NOTE: Disassembling any part of the blower assembly voids the part warranty and regulatory
certifications. There are no user-serviceable parts inside the blower assembly.