http://breathingdata.com/2008/07/08/sync-or-async-replication/ Living and breathing data management Fri, 17 Jun 2011 18:46:58 +0000 hourly 1 http://wordpress.org/?v=3.3 http://breathingdata.com/2008/07/08/sync-or-async-replication/comment-page-1/#comment-37 edsai Fri, 24 Oct 2008 15:38:06 +0000 http://breathingdata.com/?p=14#comment-37 Brian, good catch. I struggled to find a good term for application clusters which provide near 0 RPO's via transaction log shipping. The spirit of the comparison is merely that async array level replication doesn't provide that. Brian, good catch. I struggled to find a good term for application clusters which provide near 0 RPO’s via transaction log shipping. The spirit of the comparison is merely that async array level replication doesn’t provide that.

]]> http://breathingdata.com/2008/07/08/sync-or-async-replication/comment-page-1/#comment-36 Brian Fri, 24 Oct 2008 13:21:31 +0000 http://breathingdata.com/?p=14#comment-36 CCR is not an Active/Active cluster. It has one active node and one passive. CCR is not an Active/Active cluster. It has one active node and one passive.

]]> http://breathingdata.com/2008/07/08/sync-or-async-replication/comment-page-1/#comment-35 Jim W. Fri, 22 Aug 2008 15:57:16 +0000 http://breathingdata.com/?p=14#comment-35 Very good posting! Another key consideration is impact on host I/O. With synchronous replication, the host does not receive acknowledgement of the I/O until the I/O has been replicated; thus host I/O performance is directly tied to the available bandwidth of the replication infrastructure. Asynchronous replication decouples this from the source host. Very good posting! Another key consideration is impact on host I/O. With synchronous replication, the host does not receive acknowledgement of the I/O until the I/O has been replicated; thus host I/O performance is directly tied to the available bandwidth of the replication infrastructure. Asynchronous replication decouples this from the source host.

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