IBM Power 570 User Manual

4405ch02 Architecture and technical overview.fm Draft Document for Review May 28, 2009 1:59 pm
50 IBM Power 570 Technical Overview and Introduction
2.10 External I/O subsystems
This section describes the external I/O subsystems, which include the I/O drawers, the IBM
System Storage™ EXP 12S SAS drawer, as well as the 7311-D11, 7311-D20, 7311-G30,
7031-D24, and 7031-T24 deskside tower.
Table 2-15 provided an overview of all the supported I/O drawers.
Table 2-15 I/O drawer capabilities
Each POWER6 chip provides a GX+ bus which is used to connect to an I/O subsystem or
Fabric Interface card. In a fully populated 570 enclosure there are two GX+ buses, one from
each POWER6 chip. Each 570 enclosure has 2 GX+ slots with a single GX+ bus. The second
GX+ slot is not active unless the second CPU card is installed. If the second CPU card is
installed, then the second GX+ slot and associated bus is active and available.
The maximum number of attached remote I/O drawers depends on the number of system unit
enclosures in the system and the I/O attachment type. Each GX+ bus can be populated with a
GX+ adapter card that adds more RIO-G ports to connect external I/O drawers.
The GX+ adapter cards listed in Table 2-16 are supported at the time of writing.
Table 2-16 GX+ adapter card supported
2.10.1 7311 Model D11 I/O drawers
The 7311-D11 provides six PCI-X slots supporting an enhanced blind-swap mechanism.
Drawers must have a RIO-2 adapter to connect to the server.
Each primary PCI-X bus is connected to a PCI-X-to-PCI-X bridge, which provides three slots
with Extended Error Handling (EEH) for error recovering. In the 7311 Model D11 I/O drawer,
Drawer DASD PCI Slots Requirements for a 570
7311-D11 6 x PCI-X GX+ adapter card FC 1800
7311-D20 12 x SCSI disk drive bays 7 x PCI-X GX+ adapter card FC 1800
7314-G30 6 x PCI-X
DDR
266 MHz
GX+ adapter card FC 1802
7031-T24/D24 24 x SCSI disk drive bays Any supported SCSI adapter
FC 5886 12 x SAS disk drive bays Any supported SAS adapter
Feature
code
GX+ adapter card description GX+ adapter card I/O drawer support
FC 1800 GX dual port RIO-2 attach Card provides two ports that support up to
four of the following I/O drawers:
򐂰 7311-D10
򐂰 7311-D11
򐂰 7311-D20
FC 1802 GX dual port 12X channel attach Card provides two 12X connections that
support up to four of the following I/O drawer:
򐂰 7314-G30

IBM Power 570 Specifications

General

Brand	IBM
Model	Power 570
Category	Server
Language	English