Sun Cluster Data Service for ClearCase. Prehistory

"I don't expect wetware to work as logically as software."
(C) AI Jane

ClearCase as a High Available cluster service? "Good Idea!" guessed we in early 2001. But closer analyzes and tests with Sun Cluster showed - ClearCase is not cluster aware. And we had to go away from this "Good idea". Actually, we did not miss a lot - ClearCase was really stable over years and (at least I do not remember) we did not have any problems with Availability.

Times changed, Rational Software was purchased by IBM, Sun Cluster rebrended to Solaris Cluster, our project was outsourced, I left the company. But a few days ago I visited former colleagues and we discussed old times. I looked on the Internet later that evening and ... times really changed... found on official IBM site Support Policy for High Availability clustering and ClearCase.

Unfortunately, support for Solaris Cluster exists only in the form of not jet implemented change request RATLC00585651. But the main step is done - ClearCase is cluster aware. And the topic of Configuring Rational ClearCase for high availability in ClearCase Administrator's Guide gives enough information for new analyzes and tests with Solaris Cluster.

I am looking currently for new projects and have a bit of free time. Why not to try? "Good Idea!" Lets see how far I can go this time.

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