RAID Controller Circuit Boards
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It has a 32 bit, 33 MHz maximum PCI interface and features
scatter-gather bus mastering, which enables it to perform
high speed data transfers on the PCI bus. It operates in either
full duplex mode or half duplex mode. It has a four wire
interface to a serial EEPROM, which can provide power-on
initialization and software configuration.
The firmware interface is primarily through the PCI
interface, but a four-wire serial EEPROM interface can
provide power-on initialization. The diagnostic interface is
through the PCI interface.
The ethernet circuit board connects to the controller circuit
board through a 114 pin Mictor impedance controlled
connector. The electrical interface is with the primary PCI
bus (host bus) on the controller circuit board. In addition to
the PCI signals, this connector provides the 3.3 V power for
the ethernet circuit board. The power required for this board
is a maximum of 860 mA at 3.3 V, approximately 2.85 W.
RAID Controller Location The RAID controller is installed in the rear of the enclosure
in the location shown in Figure 4-2.
Figure 4-2 RAID Controller location
The above illustration shows a dual RAID configuration.
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RAID Controller
RAID Controller