Some notes about Exchange 2007

Documenting some notes on Microsoft Exchange 2007 High Availability
1) single copy clusters (SCCs) - single data center - must meet clustering hardware specs
2) cluster continuous replication (CCR) - uses MS Clustering and File Share Witness, can be done across data centers.
3) Local Continuous Replication ( LCR ) - lets you make a copy of the Exchange Stores on separate storage (hard drives) attached to the same server.
LCR does not protect against server failure.
4) SCR (Standby Continuous Replication) - 2007 SP1 - uses SQL log shipping like CCR, however the nodes do not have to clustered.

Source:
http://en.wikipedia.org/wiki/Microsoft_Exchange_Server#Clustering_and_high_availability

Another page that had lots of nice diags was:
http://telnetport25.wordpress.com/2007/11/14/exchange-2007-database-clustering-and-high-availability-features/


Question came up today....
Will Exchange 2010 support public folders....


here is a link that has discussion threads from MS MVP's who say....
http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/26d2c23d-136d-4814-b44d-0378a61f0d5c

yes! in a fashion similar to Exchange 2007 SP1.



Exchange 2007 server roles information:
# Edge Transport
# Hub Transport
# Client Access
# Mailbox - only role that can be used on SCC cluster.

Resource - Server Roles
Introduction to Exchange 2007 Server Roles
http://www.msexchange.org/tutorials/Introduction-Exchange-2007-Server-Roles.html

Getting Started with Exchange Server 2007: Server Roles
http://technet.microsoft.com/en-us/library/aa996031(EXCHG.65).aspx


Other Notes:
MS Recommended DAS - direct attached storage, also stating to check with storage vendor, but RAID 10 is recommended, for performance and reliability.