ServerNet Cluster Manual

Planning for Installation
ServerNet Cluster Manual—520575-003
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Planning for Floor Space
Replacing SEBs With MSEBs Using the Guided Procedure
You can use an OSM or TSM guided replacement procedure to replace an SEB with
an MSEB.
To launch the TSM guided procedure, from the system console of the system you are
adding, select Start>Programs>HP TSM>Guided Replacement Tools>Replace SEB
or MSEB. The OSM guided procedure is launched from within the OSM Service
Connection by performing the Replace action from the SEB you want to replace.
Online help is available to assist you in performing the procedures. You can replace
only one SEB or MSEB at a time.
The online help for the guided procedure tells you when to connect ServerNet cables
to the PICs in the MSEB.
Installing or Replacing a PIC in an MSEB
To install or replace a PIC in an MSEB, perform each step in the guided procedure up
to and including removing the MSEB from the enclosure. Then refer to the NonStop
S-Series Hardware Installation and FastPath Guide. When the PIC is installed or
replaced, use the guided procedure to reinstall the MSEB into the enclosure.
Planning for Floor Space
A functioning ServerNet cluster can consist of as few as two NonStop S-series servers
or as many as 24. Clustered servers do not take up any more floor space than
nonclustered servers. However, you must plan additional floor space for the cluster
switches. Each cluster switch enclosure occupies the same floor space as a NonStop
S-series system enclosure.
The number of cluster switches required depends on the topology (or topology subset)
used by the cluster. To determine how many cluster switches you need, see Table 2-3
on page 2-9.
To plan floor space for the servers, refer to the NonStop S-Series Planning and
Configuration Guide.
Note. The guided procedure for replacing an SEB or MSEB cannot be used to replace
ServerNet/FX or ServerNet/DA adapters installed in group 01, slots 51 and 52. To move the
adapters to an unused slot in the same enclosure or another enclosure, refer to the manual for
each adapter.
Note. Before using the guided procedure to replace an SEB or an MSEB, review the online
help topic “Read This First.” This topic contains important information about software
requirements and tools you need to perform the procedure.