You might want to give this blog a look:
https://www-secure.symantec.com/connect/blogs/howto-s-ev-10-mostly-indexing
Also, the EV release docs are here:
Article URL http://www.symantec.com/docs/DOC4441
All the other EV docs can be found here:
Article URL http://www.symantec.com/docs/DOC4402
and the compatibility doc here: http://www.symantec.com/business/support/index?page=content&id=TECH38537&key=50996
what OS is the minimum supported by EV 10?
Windows 2008 R2 x64 with 8 cores/processors and 8GB memory (see compatibility doc for specific details)
what is minimum version of SQL server supported by EV10? --
does it have to be 64 bit to take advantage of 64 bit indexing engine?
Do you mean the EV server? Yes, it has to be 64 bit.
does it class all current indexes as legacy 32 bit?
Your current indexes are left in their original format until you choose to upgrade them.
will a rebuild of legacy index allow 64 bit indexing?
Yes, there is a process to convert them to 64 bit
if we move archive between sites will this recreate index allowing for 64 bit indexing?
Yes, because moving the archive will cause the index to be rebuilt
we have a lot of MACs does this mean there are full extensions for client like PC version?
Mac client is basically the same. Here is the blurb from the release notes:
The Enterprise Vault Client for Mac OS X that is included with this release supports Outlook 2011 for Mac (version 14.0.0 or later) as well as Entourage 2008 (version 12.1.5 or later) and Entourage 2008 Web Services Edition.
Entourage 2004 is no longer supported.
