Sun Microsystems X4600 Manual de usuario descargar pdf (Pagina 39)

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Each row of fan trays is occupied by two fan modules for a total of four cooling fans. In a Sun Fire X4600

server, the fan modules are populated by 172 x 160 x 51mm fans.

Figure 5-3: Sun Fire X4600 Server Cooling Fan Layout

Note: Do not operate the system for more than 60 seconds when a fan tray 2 or 3 is removed.

Power Supplies

The Sun Fire X4600 server is powered by dual redundant hot-swappable power supplies. The server requires

four power supply units (PSUs) for N+N redundancy, but up to two PSUs to power the entire system. For

optimal redundancy, two separate circuits should be used to eliminate dependence on a single electrical circuit

and provide for consistent 2+2 redundancy with the PSUs themselves.

The new 950 watt high efficiency power supplies are shipped with each system that contain the 8-DIMM

processor boards. This new power supply offers high power output to support 2+2 redundancy for a system

with fully populated 8 processors and 64 DIMMs configuration. All other systems with 4-DIMM processor

boards still have 850 watt power supplies. When upgrading the Sun Fire X4600 M2 from 4-DIMM to 8-DIMM

processor boards, it is important to make sure the PSUs are upgraded from the 850 watt to the new 950 watt

power supplies.

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Sun Microsystems X4600 Manual de usuario Pagina 39