The new features are:
Cormac Hogan has written some extremely useful guides about how to setup SRM 4.0 with either:
Enables many-to-one pairings of protected sites with a recovery site. For more information, see the technical note Installing, Configuring, and Using Shared Recovery Site Support, which is available at http://www.vmware.com/support/pubs/srm_pubs.html.
Placeholder virtual machines can be quickly repaired after the protected site vCenter becomes available again.
You can run the SRM installer in repair mode if you need to change configuration parameters such as vCenter credentials, database connection information or credentials, and certificate details.
Eliminates most requirements to edit the XML configuration file
Did you know: a SRM licence allows you to have it installed at both sites, in an active/active or failover/failback scenario
A single protection group can now include up to 1000 virtual machines.
WOW but hey! don’t forget the limitations of HA/DRS clusters. Anyway that’s good news.
SRM recovery plans can now power-on or power-off a host that is in standby mode.
Your hosts at the DR site can be power-off and only powered on when a DR is invoqued. Green Datacenter!
The dr-ip-customizer utility now logs less verbose diagnostic output by default. To force dr-ip-customizer to log the same level of diagnostic output that it produced in earlier releases, use the -verbose option.
When you select certificate authentication, the SRM installation validates the certificate you supply before continuing. Certificates signed with an MD5 key are no longer allowed.
SRM can now protect virtual machines that have been configured for fault-tolerant operation. When recovered, these virtual machines lose their fault tolerance, and must be manually reconfigured after recovery to restore fault tolerance.
FT has a long list of requirements and limitations and if you need to resume FT on the DR site, you must stick to them too.
Current versions of the PDF documents for this release are available in the docs folder at the root of the SRM 4.0 CD. Updated versions of these documents may be available at http://www.vmware.com/support/pubs/srm_pubs.html.
Another great site for FAQs, http://www.yellow-bricks.com/srm-faq/
Beside the new features, the known issues list is at least twice as long! So check it out before rolling your SRM setup…
If you plan an upgrade from SRM 1.x to SRM 4.0 review the Site Recovery Manager (SRM) 4.0 Upgrade FAQ