Hp StorageWorks 2000 Family Modular Smart Array CLI reference guide (481600-002, May 2008)

Chapter 3 Command Descriptions 125
set expander-fault-isolation
Description
Note – This command should be used only by service technicians, or with the
advice of a service technician.
By default, the Expander Controller in each I/O module performs fault-isolation
analysis of SAS expander PHY statistics. When one or more error counters for a
specific PHY exceed the built-in thresholds, the PHY is disabled to maintain storage
system operation.
While troubleshooting a storage system problem, a service technician can use this
command to temporarily disable fault isolation for a specific Expander Controller in
a specific enclosure.
Note – If fault isolation is disabled, be sure to re-enable it before placing the system
back into service. Serious problems can result if fault isolation is disabled and a
PHY failure occurs.
Input
set expander-fault-isolation wwn enclosure-wwn controller
a|b|both enable|disable
Parameter Description
wwn enclosure-wwn Specifies the port WWN (WWPN) of the enclosure
containing the Expander Controller whose setting you
want to change. To determine the WWPN, use the
show enclosure-status command.
controller a|b|both Specifies the I/O module containing the
Expander
Controller whose setting you want to change: A, B, or
both.
enable|disable Specifies whether to enable or disable PHY fault
isolation.