NonStop NS2400 Series Planning Guide

DefinitionTerm
A connector to which a cable can be attached and which
transmits and receives data.
Port
A notation method used by hardware and software in
NonStop systems for organizing and identifying the
location of certain hardware components.
• Group-Module-Slot (GMS)
• Group-Module-Slot-Bay (GMSB)
• Group-Module-Slot-Port (GMSP)
In a NonStop NS2400 system, OSM uses this term to
hierarchically differentiate between each blade element.
Blade complex
An rx2800 i4 server that contains the processor element,
power supplies, fan assemblies, and firmware. A NonStop
NS2400 system includes up to four blade elements.
rx2800 i4 blade element
On NonStop NS2400 systems, locations of the modular components are identified by:
• Physical location:
Rack number◦
◦ Rack offset
• Logical location:
◦ Group, module, and slot (GMS) notation as defined by their position on the ServerNet
rather than the physical location.
OSM uses GMS notation in many places, including the Tree view and Attributes window, and it
uses rack and offset information to create displays of the server and its components. For example,
in the Tree view, OSM displays the location of a power supply in a VIO enclosure in group 100,
module 2, slot 15 in this form:
Power Supply (100.2.15)
Rack and Offset Physical Location
Rack name and rack offset identify the physical location of components in a NonStop NS2400
system. 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). A 36U rack has 36U with 1U
located at the bottom and 36U at the top. A 42U rack has 1U located at the bottom and 42U at
the top. The rack offset is the lowest number on the rack that the component occupies.
36 NonStop NS2400 System Overview