Introduction to High-Availability Clusters On Linux And Other Systems

Comes from Veritas software (which is now owned by Symantec), and supports several operating systems (including Solaris and Linux).
An active-passive cluster. Has a very nice GUI configuration tool (but cannot handle spaces in various resource names).
Very common in the field on Solaris systems, until Solaris 10 - when Sun tried to "boot it off" in favor of their own cluster software (i think they failed - but they got some awareness and market-share).
Often used with Veritas volume manager - which is an LVM software, and can properly identify disk statuses.
Normally uses SCSI reservation for I/O fencing, but can be used also without this.
Works only with SCSI disk devices.

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