HP StorageWorks 2300 Family Modular Smart Array CLI reference guide (500912-002, July 2010)

HP StorageWorks 2000 G2 Modular Smart Array CLI Reference Guide 95
set expander-fault-isolation
Description For use by or with direction from 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.
Syntax
set expander-fault-isolation
wwn enclosure-wwn
controller a|b|both
enabled|disabled|on|off
Parameters wwn enclosure-wwn
The WWPN of the enclosure containing the Expander Controller whose setting you want to change.
To determine the WWPN, use show enclosure-status.
controller a|b|both
The I/O module containing the Expander Controller whose setting you want to change: A, B, or
both.
enabled|disabled|on|off
Whether to enable or disable PHY fault isolation.
Example Disable PHY fault isolation for Expander Controller A in an enclosure:
# set expander-fault-isolation wwn 500C0FF00A408A3C controller a disabled
Success: Disabled expander fault isolation.
Re-enable PHY fault isolation for Expander Controller A in the same enclosure:
# set expander-fault-isolation wwn 500C0FF00A408A3C controller a enabled
Success: Enabled expander fault isolation.
See also • set expander-phy
• show enclosure-status
• show expander-status