Chapter 1. Introduction and general description 29
used to communicate to the multiple Lpars, which helps in virtualization/sharing of the
Ethernet port without using the Ethernet bridge on the Virtual IO Server.
The PS700 and PS701 blade servers have two 1 GB HEA. The PS702 has four 1 GB HEAs
(two on each system board).
For more details about HEA and IVE subsystems, see 2.7, “Integrated Virtual Ethernet” on
page 61.
SAS Controller
The integrated SAS controller is used to drive the local SAS storage.
The 3 GB SAS Passthrough expansion card can be used to connect to the BladeCenter SAS
switch, which can be connected to the external storage. This SAS passthrough expansion
card can also be used to connect to BladeCenter S internal drive SAS drives. See “3 Gb SAS
Passthrough Expansion Card (CIOv)” on page 26 for more information.
The blades servers each have one integrated SAS controller. The SAS controller host PCI-X
interface to P5IOC2 I/O Hub is 64 bits wide and operates at 133 MHz. The integrated SAS
controller supports hardware mirroring RAID 0, RAID 1 or RAID 10 when two HDDs are used
in P701 or P702 blade servers
For more information, see “SAS adapter” on page 58 and 2.9, “Internal storage” on page 65
USB controller
The USB controller connects the USB bus to the midplane, which is then routed to the media
tray in the BladeCenter chassis to connect to USB devices (such as an optical drive or
diskette drive).
For more information, see 2.6.6, “Embedded USB controller” on page 60.
Serial over LAN (SOL)
The integrated SOL function routes the console data stream over standard dual 1 GB
Ethernet ports to the Advance Management Module. The PS700, PS701, and PS702 do not
have on-board video chips and do not support KVM connections. Console access is only by
SOL connection. Each blade can have a single SOL session, however there can be multiple
telnet or ssh sessions to the BladeCenter AMM each acting as a SOL connection to a
different blade.
For more information, see 2.8.1, “Server console access by SOL” on page 63.
1.6 Supported BladeCenter I/O modules
With IBM BladeCenter, the switches and other I/O modules are installed in the chassis rather
than as discrete devices installed in the rack.
The BladeCenter chassis supports a wide variety and range of I/O switch modules. These
switch modules are matched to the type, slot location, and form factor of the expansion cards
installed in a blade server. For more information, see 1.5.8, “I/O features” on page 24 and 2.6,
“Internal I/O subsystem” on page 52.
The I/O switch modules described in the following sections are matched with the on-board
HEAs and supported expansion cards in the PS700, PS701, and PS702 blades. In general,
the integrated ports on the blades and the additional ports on the expansion cards can
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