Technologies for the ProLiant ML570 G4 and ProLiant DL580 G4 servers

ProLiant ML570 G4
The ProLiant ML570 G4 is compact (6U), lightweight, and almost cable-free. The chassis has two
levels, with most of the components on the top level (Figure 13). The components plug into the system
board for easy access. The G4 has a front-accessible video port, two front USB ports, and two back
USB ports.
Figure 13. Internal view of the ProLiant ML570 G4 server. Customer systems may look somewhat different.
Administrators will find it easy to service the ML570 G4. For example, the use of an innovative, split
center wall reduces the number of steps required when adding a processor to the server. The center
wall is needed for stability in the server to prevent flexing, especially during shipment. In the G4
model, to update the processor and VRM the administrator can either remove the center wall (with the
fans installed) as one piece or just remove the half of the center wall that is retaining the VRMs
(Figure 14).
In the design of the ML570 G4, care has been taken to remove the possibility of mishaps when an
administrator is required to upgrade or service the server. For instance, the memory modules use an
intuitive locking mechanism to prevent a user from inserting or removing a memory board when it is in
the hot, or active, state. The heat sink on the processor has extensions that keep the processor pins
from hitting any surfaces and being inadvertently bent when the administrator needs to add a
processor. The power backplane and fan backplane are designed with components only on the top
side of the boards, to reduce any chance of failures due to components being knocked off or
damaged on the bottom side of the boards. Similarly, for boards that do have components on both
sides, subpans have been added to reduce the risk of damaging bottom-side components.
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