ServerNet Cluster Manual

Service Categories for Hardware Components
ServerNet Cluster Manual—520575-003
D-2
For more information about service categories, see the Replaceable Units topic in the
Service Information category of the Support and Service category in NTL, or see the
manual for the component you are servicing.
Class 3 CRU
•
Plug-in Cards
(PICs) installed
in MSEBs
•
MSEBs
•
PMF CRUs
•
ServerNet II
Switch
•
ServerNet
cables
•
AC transfer
switch
A CRU that probably will cause a partial or total
system outage if the documented replacement
procedure is not followed correctly. Customers
replacing Class 3 CRUs should have six or more
months’ experience replacing NonStop S-series
CRUs or equivalent training. Customers must be
able to use the tools needed for the replacement
procedure, must protect components from
electrostatic discharge (ESD), and must
understand the dependencies involved in NonStop
S-series CRU-replacement procedures, such as
disk path switching. Replacement by a service
provider trained by HP is recommended.
Field-
Replaceable
Unit (FRU)
•
Batteries
(system)
•
ServerNet F/X
adapters
•
PMCUs
•
Uninterruptible
power supply
(UPS)
•
Enclosures
A unit that can be replaced in the field only by
qualified personnel trained by HP and cannot be
replaced by customers. A unit is classified as a
FRU because of safety hazards such as weight,
size, sharp edges, or electrical potential;
contractual agreements with suppliers; or national
or international standards.
Note. A cluster switch is neither a CRU nor a FRU. It is a collection of three components,
which are included in Ta bl e D -1
: the ServerNet II Switch, the AC transfer switch, and the UPS.
For more information, see the ServerNet Cluster 6770 Hardware Installation and Support
Guide.
Table D-1. Service Categories for Hardware Components (page 2 of 2)
Category CRU or FRU* Definition
*The CRUs and FRUs listed do not represent a complete list of CRUs and FRUs used in NonStop S-series
servers.