5190/5194 Modular Tape Subsystem Manual

Configuring the Modular Tape Subsystem
5190/5194 Modular Tape Subsystem Manual—426878-002
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The Group, Module, and Slot Hierarchy
The Group, Module, and Slot Hierarchy
Components in a NonStop Himalaya S-series server are organized according to a
group, module, and slot hierarchy, as follows.
Identifying CRUs
CRUs in NonStop Himalaya S-series servers are identified by their physical location.
There are no subchannel addresses as there were in previous systems. To locate any
CRU, you need to know the following:
For example, the Subsystem Control Facility (SCF) storage subsystem might display
the location of a PMF CRU as:
PMF.GRP-1.MOD-1.SLOT-50
Refer to Figure 1-7 on page 1-14 or Figure 1-8 on page 1-15 for the locations of the
group ID and module ID labels on NonStop Himalaya S-series processor or I/O
enclosures.
For more information on system organization, group numbering, or labeling in a
NonStop Himalaya S-series server, refer to the Himalaya S-Series Planning and
Configuration Guide.
Group A group consists of all objects accessible to a pair of service
processors (SPs) in a system enclosure. In a NonStop
Himalaya S-series server, a group is contained in exactly one
enclosure and consists of a single module.
Module A module is a set of components sharing a common hardware
interconnection, such as a backplane. A module is a subset of a
group, and it is usually contained in a system enclosure. A
module contains one or more slots. In a NonStop Himalaya
S-series server, there is exactly one module in a group.
Slot A slot is a labeled physical space in an enclosure into which a
CRU or field-replaceable unit (FRU) can be installed. FRUs are
replaced by trained service providers only.
group number The group number identifies all objects connected through
the service processors (SPs) located on the processor
multifunction (PMF) CRUs. For NonStop Himalaya S-series
servers, this includes everything in a system enclosure.
module number For NonStop Himalaya S-series servers, there is only one
module in a group, so the module number is always “01.”
slot number The slot number identifies a position within a module. The
slot number is indicated by a label beneath the slot.