Intel SGI Altix 450 - Manual (Page 99)

System Components
007-4857-002 77
Figure 3-5 Altix 450 IRU System Components Example
Bay (Unit) Numbering
Bays in the racks are numbered using standard units. A standard unit (SU) or unit (U) is equal to
1.75 inches (4.445 cm). Because IRUs occupy multiple standard units, IRU locations within a rack
are identified by the bottom unit (U) in which the IRU resides. For example, in a 42U rack, an IRU
positioned in U01 through U05 is identified as U01.
Rack Numbering
Each rack is numbered with a three-digit number sequentially beginning with 001. A rack contains
IRU enclosures, optional mass storage enclosures, and potentially other options. In a single
compute rack system, the rack number is always 001.
Router
board
Router
board
Power
supplies
System control
board
Compute/memory blades
Port
H
Port
G Port
H
Port
G
inside TM
L1 controller
panel
SAS 4X
USB0
USB1
USB2
USB3
HDD0 HDD1
DVDROM
ETH0 ETH1
PCI-X 1
PCI-X 0
F1 F2 F3 F4
A1 A2 A3 A4
P0 PF N0 N1
IA blade