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Rack and Offset Physical Location
Rack name and rack offset identify the physical location of components in a NonStop BladeSystem.
The rack name is located on an external label affixed to the rack, which includes the system name
plus a 2-digit rack number.
Rack offset is labeled on the rails in each side of the rack. These rails are measured vertically in
units called U, with one U measuring 1.75 inches (44 millimeters). The rack is 42U with U1 located
at the bottom and 42U at the top. The rack offset is the lowest number on the rack that the
component occupies.
ServerNet Switch Group-Module-Slot Numbering
• Group (100-101):
— Group 100 is the first c7000 processor enclosure containing logical processors 0-7.
— Group 101 is the second c7000 processor enclosure containing logical processors 8-15.
• Module (2-3):
— Module 2 is the X fabric.
— Module 3 is the Y fabric.
• Slot (5 or 7):
— Slot 5 contains the double-wide ServerNet switch for the X fabric.
— Slot 7 contains the double-wide ServerNet switch for the Y fabric.
NOTE: There are two types of c7000 ServerNet switches: Standard I/O and High I/O. For
more information and illustrations of the ServerNet switch ports, refer to “I/O Connections
(Standard and High I/O ServerNet Switch Configurations)” (page 55).
• Port (1-18):
— Ports 1 through 2 support the inter-enclosure links. Port 1 is marked GA. Port 2 is
marked GB.
— Ports 3 through 8 support the I/O links (IP CLIM, Storage CLIM, and IOAM)
NOTE: IOAMs must use Ports 4 through 7. These ports support 4-way IOAM links.
— Ports 9 and 10 support the cross links between two ServerNet switches in the same
enclosure.
— Ports 11 and 12 support the links to a cluster switch. SH on Port 11 stands for short haul.
LH on Port 12 stands for long haul.
— Ports 13 through 18 are not supported.
• Fiber (1-4)
These fibers support up to 4 ServerNet links on ports 3-8 of the c7000 enclosure ServerNet
switch.
26 NonStop BladeSystem Overview