Scsi Backplane Board; Peripherals; External Scsi Connector (Optional) - Intel SR870BN4 - Server Platform - 0 MB RAM Product Manual

SCSI Backplane Board

The SCSI backplane board supports three LVDS hard drives. Its features include:
Three SCA connectors for hot-swap 1-inch SCSI hard drives
One blind-mate connector for dockable slim-line IDE LS240 device
One blind-mate connector for dockable slim-line IDE DVD or CD device
SCSI accessed fault-tolerant enclosures (SAF-TE) logic
48 V to 12 V integrated DC-to-DC converter
12 V to 5 V integrated DC-to-DC converter
5 V to 2.5 V linear regulator

Peripherals

The server connects to supported peripheral devices through interfaces located on the I/O Board.
The Super I/O on this board provides four USB ports, an Ethernet port, a serial port, an external
SCSI connector (optional), a VGA video output port, and in and out ICMB connectors (optional).
For a detailed view of the I/O Board connections, see Figure 8 on page 27.

External SCSI Connector (Optional)

An external SCSI connector is available as an option. A cable runs from the I/O board to the
external SCSI connector installed on the back panel.
The I/O board contains two Ultra320 compliant SCSI channels. One channel is used internally
while the other is for external system use. While the internal channel supports only Low Voltage
Differential (LVD) signaling, the external channel supports both LVD and SE (single-ended)
signaling. With LVD signaling, the channels can each support a maximum data rate of
320 MB/sec.
NOTE
The internal SCSI signal is routed to the midplane board's disk bay
connector to interface with internal SCSI devices. There is an optional
connector on that bus that allows an external SCSI controller to drive the
internal bus.
40 Intel® SR870BN4 Server System Product Guide