How to recover a failed VCS\ Exchange cluster node back into original Organization and Site.
VERITAS Cluster Server for NT (VCS) provides for failover if a node fails. Recovering a failed Exchange node requires a precise procedure. In this example, there is a 2-node VCS\Exchange cluster. The servers are named VCS102 and VCS103. VCS103 failed in such a way that the entire Operating System must be reinstalled. VCS102 is hosting Exchange and is functioning correctly..
- A full backup of both systems.
- Remove VCS103 from the Exchange Service Group List. This can be done from the Cluster Manager > Tools > System Manager (Figure 1).
- A disk drive with at least 100 MB free. This cannot be a system drive or a drive on VCS102. This drive will temporarily have a reassigned drive letter.
The procedure is as follows:
1. Install Operating System, same Service Pack as on VCS102, current drivers and proprietary software according to manufacturer requirements.
2. Install VERITAS Cluster Server into the existing cluster. Reboot VCS103.
3. Install Exchange Agent for VCS.
4. Open Disk Administrator (or Volume Manager if it is employed). Choose a disk (either from an internal drive on VCS103 or shared storage ) that does not contain the original Exchange installation. Make sure that there is at least 100 MB free on the disk. Name it the same drive letter that Exchange was installed on.
For example, the original installation for Exchange was on Shared Storage Disk 1. During installation, Disk 1 was named E: A separate disk is selected for the installation of Exchange on VCS103. Disk 2 is chosen because it has enough free disk space. Give Disk 2 the drive letter E:. This makes the original data on the live Exchange installation safe from being overwritten. The new Exchange installation will have drive letter E in its configuration. It will be identical to VCS102.
5. VNAME VCS103. For example, if the virtual name that was used before is VEXCH, the command would be: