Re: Data Mirroring on two data centers -- How to use ASM ?

  • From: Robert Blok <robert_oraclel@xxxxxxxxx>
  • To: db.mail.1@xxxxxxxxx
  • Date: Fri, 19 May 2006 10:40:48 +0200


Building a two site cluster with two seperate storage arrays is possible The only thing you have to take into account is that with a two node cluster (any sort of clustering you will use, either ASM, HACMP (shared devices) or GPFS) your cluster by itself will not be possible to cope with all the failures by itself. This is the result of the fact that when network failures occur no "third party" can choose which node should survive. So a manual failover is the only solution. Only a third site will give you enough "quorum" to provide an environment in which automated failovers can be build.



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