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NOTE
All hard drives have different cooling, power, and vibration characteristics.
Intel has validated specific hard drive types in the SRKA4 chassis. The
SRKA4 Validation List contains a list of these manufacturers and hard drive
types. The document can be found on
http://support.intel.com/support/motherboards/server/SRKA4/compat.htm
An LED above each hard drive displays the status of that hard drive.
LED State
Solid green
Flashing green
Solid yellow
Flashing yellow
Off
Power Subsystem
The SRKA4 MP Server System uses a universal input-switching power subsystem (PSBS). This
subsystem provides up to 630 Watts DC. The subsystem also minimizes the RMS current drawn
from each AC line by providing power factor corrected AC input. The chassis can be configured
with one, two, or three 350-Watt power supply modules, where each is designed to minimize
electromagnetic interference (EMI) and radio frequency interference (RFI).
The power subsystem consists of a power subsystem bay, up to three power supply modules. The
power subsystem bay contains a power distribution board, which manages the power delivered by
all functional power supplies.
The power subsystem can operate in either a nonredundant or redundant way. Operating in a
nonredundant way means that you are using only one or two power supply modules. If the power
supply module ceases to function normally, the server system cannot function properly, if at all. A
minimal configuration supported by one power supply module is one processor, four memory
DIMMs, one hard drive that is not 10K, one floppy drive, and one CD-ROM.
The safer approach is to use a redundant (2+1) power subsystem. To form a (2+1) redundant
power subsystem, the subsystem parallels the DC output of one power supply module with one or
two other modules. If one module ceases to function normally, the remaining modules provide
power to the server system and the system continues to function properly. Two power supply
modules are required to provide power to a fully configured SRKA4 MP Server System. The third
module provides redundancy. A fully configured system includes four processors, eight GB of
memory, one floppy drive, one CD-ROM, five hard drives, and eight PCI add-in boards.
WARNING
The total power requirement for the SRKA4 MP Server System exceeds
the 240 VA energy hazard limit that defines an operator-accessible area.
Only qualified service technicians should access the processor, memory,
power subsystem, and non hot-plug/hot-swap areas of the SKA4
baseboard.
16
Status
The hard drive is present and powered on.
The hard drive is active.
There is an asserted fault status on the hard drive.
A rebuild of the hard drive is in progress.
The hard drive is not powered on.
SRKA4/ISP4400 Server System Product Guide
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