User's Guide

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