A separate Site Recovery Manager instance is required for the protection and recovery of management components in the event of a disaster situation with your SDDC.
Install and configure Site Recovery Manager in a dedicated virtual machine, after you install and configure vCenter Server and the associated Platform Services Controller instances in the region.
| Decision ID |
Design Decision |
Design Justification |
Design Implication |
|---|---|---|---|
| SDDC-OPS-DR-001 |
Deploy Site Recovery Manager in a dedicated virtual machine. |
All components of the SDDC solution must support the highest levels of availability. When Site Recovery Manager runs as a virtual machine, you can enable the availability capabilities of vCenter Server clusters. |
None. |
| SDDC-OPS-DR-002 |
Deploy each Site Recovery Manager instance in the management cluster. |
All management components must be in the same cluster. |
None. |
| SDDC-OPS-DR-003 |
Deploy each Site Recovery Manager instance with an embedded PostgreSQL database. |
PostgreSQL is the only available database option when deploying the Site Recovery Manager appliance. |
You must assign database administrators who have the skills and tools to administer PostgreSQL databases. |
Sizing Compute Resources for Site Recovery Manager
To support the orchestrated failover of the SDDC management components according to the objectives of this design, you must size the host operating system on which the Site Recovery Manager software runs.
| Attribute |
Specification |
|---|---|
| Number of vCPUs |
2 (running at 2.0 GHz or higher) |
| Memory |
8 GB |
| Number of virtual machine NIC ports |
1 |
| Disk size |
20 GB |
| Operating system |
VMware Photon OS |
Sizing is usually done according to IT organization requirements. However, this design uses calculations that are based on the management components in a single region. The design then mirrors the calculations for the other region. Consider the following management node configuration per region:
| Management Component |
Node Type |
Number of Nodes |
|---|---|---|
| Cloud Management Platform |
vRealize Automation Appliance |
3 |
| vRealize IaaS Web Server |
2 |
|
| vRealize IaaS Management Server |
2 |
|
| vRealize IaaS DEM |
2 |
|
| Microsoft SQL Server |
1 |
|
| vRealize Business for Cloud Appliance |
1 |
|
| vRealize Suite Lifecycle Manager |
vRealize Suite Lifecycle Manager Appliance |
1 |
| vRealize Operations Manager |
vRealize Operations Manager Master |
1 |
| vRealize Operations Manager Master Replica |
1 |
|
| vRealize Operations Manager Data |
1 |
You must protect a total of 15 virtual machines.
You use vSphere Replication as the replication solution between the Site Recovery Manager sites, and you distribute the virtual machines in two protection groups.
| Decision ID |
Design Decision |
Design Justification |
Design Implication |
|---|---|---|---|
| SDDC-OPS-DR-004 |
Deploy the Site Recovery Manager virtual appliance according to the following specifications:
|
Accommodates the protection of management components to supply the highest levels of availability. This size further accommodates the following setup:
|
You must increase the size of the nodes if you add more protection groups, protected virtual machines or recovery plans. |
Placeholder Virtual Machines
Site Recovery Manager creates a placeholder virtual machine on the recovery region for every machine from the Site Recovery Manager protection group. Placeholder virtual machine files are small because they contain virtual machine configuration metadata but no virtual machine disks. Site Recovery Manager adds the placeholder virtual machines as recovery region objects to the vCenter Server inventory.
