Re: SANPSHOT TECHNOLGIES ON WINDIWS 2000 CLUSTER SYSTEMS

I have designed systems on Sun Solaris Cluster (1.2 and 2.2) with OPS (7.3.x and 8.1.x) that used EMC "snapshots" (BCVs and SRDF), but not Windows 2000 clusters, DELL, or HP. Those used BCVs for backups of OPS databases and worked well. Since the EMC "snapshot" was performed at a layer common to all nodes (the Symmetrix), there was no issue of synchronizing host write activity - a track modification is a track modification, no matter which host it comes from. If the "snapshot" mechanism is at the host level, one would need to be concerned about how writes from distinct hosts in an OPS cluster are managed/coordinated. In this context, the considerations for RAC are identical to those for OPS.

-Don Granaman
[Orasaurus - Honk if you remember UFI!]

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Tuesday, October 02, 2001 8:35 AM

>
> hi ,
> We have been studiyng about a project which is include Oracle Real
> Application Clusters on Windows 2000 Cluster System.
> And Our hardware vendors present to us "snapshot technology" on their
> storage systems .We have orginized two meeting with DELL and HP vendores and
> they said to us that they could present to us "snapshot tech." and We could
> usathis snapshots as consistent oracle backups. But I am not sure about
> this.
> Is there any body who has oracle or Oracle Parallel Server or 9i RAC and
> this kind of storage systems.
> I need advice and expre?nced info aabout this sunbject.

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Author: Don Granaman
  INET: granaman_at_home.com

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