IBM eserver pSeries 7311 D10, Руководство по обслуживанию

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pSeries 7311 Model D20 Overview
The Model D20 is a 19-inch, rack-mountable I/O subsystem that is attached to a processor subsystem to
extend the system’s capacity for I/O adapters and disk drives. The I/O subsystem includes redundant
concurrently maintainable power and cooling.
Seven PCI slots are available for PCI adapters. Because the PCI slots support hot-pluggable adapters, the
I/O subsystem can have adapters installed without turning off power. The Model D20 is 4 EIA units high
and is compatible with 19-inch EIA rack enclosures.
Model D20 I/O Subsystem Features
The features of the Model D20 enable this I/O subsystem to extend the input and output capabilities of the
processor subsystem. Features such as PCI-X adapters and internal SCSI disk drives are supported.
Model D20 Operator Indicators
LEDs are used on the Model D20 as operator indicators. Tables found in “Model D20 PCI-X Slots” and
“Model D20 Power” on page 18 describes the LED states and their definitions. For more information on
LEDs and their definitions, see Chapter 5, “Fault and Attention LEDs,” on page 173. LEDs can be found on
or near the following FRUs:
v LED indicators visible on each PCI adapter light pipe
v
LEDs for power on, attention, SCSI activity
v
Attention/Identify LEDs
v Rack Beacon
Model D20 PCI-X Slots
Seven PCI-X slots are available. The slots are 64-bit capable at up to 131.5 Mhz, 3.3 volts. The slots are
numbered on the rear of the chassis from left to right 1 through 7. The I/O backplane and each I/O slot
have green power indicator LEDs and amber identify LEDs. The following illustration shows the LED
locations when viewing from the rear of the I/O drawer.
1 PCI-X Expansion Slot 1 6 PCI-X Expansion Slot 6
2 PCI-X Expansion Slot 2 7 PCI-X Expansion Slot 7
3 PCI-X Expansion Slot 3 A Green Power LEDs
4 PCI-X Expansion Slot 4 B Amber Identify LEDs
5 PCI-X Expansion Slot 5
16 Eserver
pSeries 7311 Model D10 and Model D20 Service Guide