Sybase high availability requires the following hardware and system components:
Windows NT Enterprise Edition (with Service Pack 6 and 6a) and Microsoft Cluster Server installed on both nodes, residing on local disk storage with the same path on both nodes (for example, C:\WINNT and C:\WINNT\Cluster on both nodes).
A Microsoft certified cluster. See your Microsoft documentation for a description of what constitutes a certified cluster.
Adaptive Server software installed on both cluster nodes, with the Sybase release directory (%SYBASE%) residing on local disk storage on the nodes (rather than shared disk storage).
Sybase data devices on shared disk drives.
Both Adaptive Servers have an independent shared disk (or set of shared disks) for their data device storage. This area of shared disk stores all the companion database device files. The other companion cannot use this area of shared disk for any of its data devices.
