Intel SGI Altix 450 manual Bay Unit Numbering, Rack Numbering

System Components

Port

H

Port

G

					L1 controller
					panel
PCI-X 0
PCI-X 1						Port
		ETH0	ETH1
DVDROM						G
	HDD0	HDD1	P0 PF N0 N1
				USB3	inside
				USB2
				USB1
				USB0
			F1 F2 F3 F4			Port
			A1 A2 A3 A4
				SAS 4X		H
				Compute/memory blades	Power
					supplies
Router	IA blade			System control		Router
board				board		board

Figure 3-5Altix 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

1.75inches (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.

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