HP MSA 2040 CLI Reference Guide
set expander-fault-isolation 155
set expander-fault-isolation
Description Temporarily disables PHY fault isolation for a specific Expander Controller. For use by or with
direction from technical support.
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
[encl
enclosure-ID
]
[wwn
enclosure-wwn
]
[controller a|b|both]
enabled|disabled|on|off
Parameters encl
enclosure-ID
Optional. The enclosure ID of the enclosure containing the PHY. Specify either this parameter or the
wwn parameter.
wwn
enclosure-wwn
Optional. The WWN of the enclosure containing the PHY. Specify either this parameter or the encl
parameter.
controller a|b|both
Optional. The I/O module containing the Expander Controller whose setting you want to change: A,
B, or both. If this parameter is omitted, the setting is changed in both I/O modules.
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 encl 1 controller a disabled
Success: Command completed successfully. - Expander fault isolation was
disabled. (2012-01-21 12:05:41)
Re-enable PHY fault isolation for Expander Controller A in the same enclosure:
# set expander-fault-isolation encl 1 controller a enabled
Success: Command completed successfully. - Expander fault isolation was enabled.
(2012-01-21 12:05:51)
See also • set expander-phy
• show enclosures
• show expander-status