stopped and restarted. The Raid Manager instance must be running before any Continentalclusters package movement occurs.

A given file system must not reside on more than one P9000 or XP frames for either the PVOL or the SVOL. A given LVM Logical Volume (LV) must not reside on more than one P9000 or XP frames for either the PVOL or the SVOL.

The application is responsible for data integrity, and must use the O_SYNC flag when ordering of I/Os is important. Most relational database products are examples of applications that ensure data integrity by using the O_SYNC flag.

Each host must be connected to only the P9000 or XP disk array that contains either the PVOL or the SVOL. A given host must not be connected to both the PVOL and the SVOL of a Continuous Access pair.

210 Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP