RE: OT RE: Async I/O on Windows - WHAT is a FEDERATED DATABASE

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class=470590510-06022001>Ross,
I was
at the Open World conference session where Jeremy Burton made the comments about clustering, OPS, data segmentation, etc.  The data segmentation part was about MS SQLServer, and about how it creates significant work to add cluster nodes. C|net has their terms and comments a little scrambled. The Oracle 9i solution used OPS for the instances and an EMC/SRDF SAN for the data storage.  Each OPS cluster node had full access to every piece of data.  By doing this no node is a single point of failure (as Larry demonstrated and was chastised for by MS).  Also it creates greater capability for scalability.  Just configure and add a node and it improves performance (also part of Larry's demo).  As described with the MS federated database configuration you would need to resegment the data to add a node.  This would then destabilize the system even further by adding another single point of failure.  Failure of an OPS cluster node with the data on a SAN  with redundancy, such as the EMC/SRDF option, only decreases performance, it doesn't kill the operation of the system.
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class=470590510-06022001> 
Rodd
Holman

  <FONT face=Tahoma
  size=2>-----Original Message-----From: Mohan, Ross   [mailto:MohanR_at_STARS-SMI.com]Sent: Monday, February 05, 2001 5:09   PMTo: Multiple recipients of list ORACLE-LSubject: RE:   OT RE: Async I/O on Windows - WHAT is a FEDERATED DATABASE
  Very Interesting!  It appears Oracle 9i, is, in fact, a   Hybrid Federated Database!
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  A snippet: Received on Tue Feb 06 2001 - 04:31:42 CST