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6-5
Checking the Airfl ow
Checking Airfl ow
1. Make sure there are no objects obstructing the airfl ow in and out of the
chassis. In addition, if you are using a front bezel, make sure the bezel's fi lter
is replaced periodically.
2. Except for brief periods while swapping hard drives, do not operate the server
without drives or the drive carriers in the drive bays. Use only recommended
server parts.
3. Make sure no wires or foreign objects obstruct airfl ow through the chassis.
Pull all excess cabling out of the airfl ow path or use shorter cables.
4. The control panel LEDs inform you of system status. See "Chapter 3: System
Interface" for details on the LEDs and the control panel buttons.
6-6
System Fans
Four fans provide cooling for the chassis. These fans circulate air through the
chassis as a means of lowering the chassis internal temperature. The SC217HD
system fans are easy to change modules. There is no need to uninstall any
other parts inside the system when replacing fans, and no tools are required for
installation.
Optional Fan Confi gurations
The SC217HDchassis is designed with a hot-swappable fan confi guration. One
fan is wired directly to each motherboard. In the event that one of the motherboard
drawers is removed, then the fan associated with that motherboard will not function
until the drawer is replaced. If multiple controls are desired in the SC217HD, an
optional cable must be purchased separately to connect from the backplane to
each motherboard node.
Fan Confi gurations
Hot-Swappable Fan Default Confi guration
Fans A and B connected to backplane,
backplane connected to Node A and B by adapter card
6-5
Chapter 6: Advanced Chassis Setup
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