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Chapter 3: Maintenance and Component Installation
I/O Shield
The I/O shield holds the serverboard ports in place. The I/O shield does not require installation.
Node Installation/Removal
As with any server system, power must be removed from the serverboard when upgrading or
installing memory or processors. In the 2U Twin server, the serverboards (nodes) are capable
of being hot-swapped from the chassis, allowing one to be powered down for servicing while
the other continues operating.
Caution!
Removing a node from the server affects the airflow throughout the system. For this
reason, nodes should be removed, serviced and replaced as quickly as possible. Also note that
powering down a node will power down all the hard drives that are logically associated with it.
Removing a Node
1. Depress the power button on the control panel to power down the node.
2. There are two latches located below the handles at the rear of the node tray. Push both
of these inward.
3. While pushing the latches inward, grasp both handles and pull the node from the
chassis.
4. Perform any service needed to the node in a timely manner.
5.
Reinstall the node by pushing it into its bay until firmly seated.
Permanent and Optional Standoffs
Standoffs prevent short circuits by securing space between the serverboard and the chassis
surface. The SC827HQ chassis includes permanent standoffs in locations used by the
serverboards. These standoffs accept the rounded Phillips head screws included in the
SC827HQ accessories packaging.
Some serverboards require additional screws for heatsinks, general components and/or non-
standard security. Optional standoffs are used for these serverboards.
To use an optional standoff, you must place a hexagon screw through the bottom the chassis
and secure the screw with the hexagonal nut (rounded side up).
Depending upon the configuration of the serverboard being used, it is also possible that some
of the optional standoffs which are pre-installed in the chassis, may need to be removed.