HP StorageWorks Auto Path VA Software - Manual (Page 34)

34 Recovering After a Path Failure
Recovering After a Path Failure
If a data path fails, Auto Path VA automatically switches to an alternate path, dropping the failed path
out of the I/O rotation without any loss of data. The switchover is completely transparent to
applications, so normal operation continues without downtime.
All path changes are logged in the Windows Event Viewer log, allowing administrators to investigate
and repair failed paths. After a failed path is repaired, Auto Path VA automatically begins using the
path with the set load balancing policy.
If a failed path was set as a preferred path, you must use the Device Settings window to reset the
device’s preferred path back to the repaired path’s number. See section ”Setting the Preferred Path” on
page 24 for instructions.