Secure Path v2.0 for Sun Solaris Installation and Reference Guide

Theory of Operation 1-3
Compaq Confidential – Need to Know Required
Writer: Cyndi Vaccaro Project: StorageWorks Secure Path Version 2.0 for Sun Solaris Comments:
Part Number: AA-RKYDA-TE File Name: b-ch1 Theory of Operation.doc Last Saved On: 12/21/99 4:06 PM
Multiple-bus mode allows each controller to process I/O independently of the
other controller under normal operation. During runtime, storage units may be
moved between paths at any time using the Secure Path management utility.
The Secure Path software detects the failure of I/O operations on a failed path
and automatically re-routes traffic to the other path. Path failover is completed
seamlessly, without process disruption or data loss.
Following a warm-swap of an adapter or cable component, failed controller, or
hub, storage units can be moved back to their original path using the Secure
Path management utility.
To protect against drive failure in a Secure Path environment, storage units can
be configured using RAID Levels 0+1, 1, or 3/5.