On 10/4/2012 11:48 AM, Richard Elling wrote:
On Oct 4, 2012, at 8:35 AM, Dan Swartzendruber <dswa...@druber.com <mailto:dswa...@druber.com>> wrote:



This whole thread has been fascinating. I really wish we (OI) had the two following things that freebsd supports:

1. HAST - provides a block-level driver that mirrors a local disk to a network "disk" presenting the result as a block device using the GEOM API.

This is called AVS in the Solaris world.

In general, these systems suffer from a fatal design flaw: the authoritative view of the data is not also responsible for the replication. In other words, you can provide coherency but not consistency. Both are required to provide a single view of the data.

Can you expand on this?

2. CARP.

This exists as part of the OHAC project.
 -- richard


These are both freely available?
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