Installation guide

138 Chapter 8:Cluster Administration
Table 8–5 Diagnosing and Correcting Problems in a Cluster
Problem Symptom Solution
SCSI bus not terminated SCSI errors appear in the
log file
Each SCSI bus must be
terminated only at the beginning
and end of the bus. Depending
on the bus configuration, it
might be necessary to enable
or disable termination in host
bus adapters, RAID controllers,
and storage enclosures. To
support hot plugging, external
termination is required to
terminate a SCSI bus.
In addition, be sure that no
devices are connected to a SCSI
bus using a stub that is longer
than 0.1 meter.
See Section 2.4.4, Configuring
Shared Disk Storage and
Section A.3, SCSI Bus
Termination for information
about terminating different
types of SCSI buses.
SCSI bus length greater
than maximum limit
SCSI errors appear in the
log file
Each type of SCSI bus must
adhere to restrictions on length,
as described in Section A.4,
SCSI Bus Length.
In addition, ensure that no
single-ended devices are
connected to the LVD SCSI
bus, because this will cause
the entire bus to revert to a
single-ended bus, which has
more severe length restrictions
than a differential bus.