I currently have 3 Exchange Servers all running W2K8R2 Standard
and Exchange 2010 Standard SP3 rollup 1.
Our single main server at our corporate office has 2 databases and
the 2 remote servers have 1 database each.
They also a single Public Folder running on each of the servers.
We are currently also using a Sophos Email Appliance ES1100 that
filters emails at our main corporate location before moving on to
our corporate and remote exchange locations.
Firewall - Sophos Email - OWA - EXCH1corp/EXCHrem1/EXCHrem2
I am currently working out a plan to take advantage of High
Availability and Site Resilience.
With a setup of the following with DAG and CAS array.
EXCH1corp 2 Active DBs for corp office users
1 Passive for Exchrem1
1 Passive for Exchrem2
1 Public Folder
EXCH2corp 2 Passive DBs for corp office users located at
our colocation site
Exchrem1 1 Active DB for remote office 1 users
1 Public Folder rem1
Exchrem2 1 Active DB for remote office 2 users
1 Public Folder rem2
ExchWitness 1 Witness server located at our corp office
We are only about 100 users with approx 200-300 mailboxes.
I would like to know if we require following:
1. a single load balancer at each location (can this be done
with Windows NLB)
2. Require W2K8R2 Enterprise License for DAG utilization
3. We have a low bandwidth connection so would initial
seeding and replication be an issue. FYI in the future we
will be upgrading this.
4. Do we still require and Edge Server even though we are
using a Sophos Email appliance for mail filtering.
5. Do we still require a MAPI and replication network as this
is a small site and we are using Vmware virtualization.
Thanks
John