VMware Failover to Disaster Recovery Site?

Background Information:

- We have two separate but identical sites (Production and Disaster Recovery)
- Both sites will have their own infrastructure of 3x servers, 2x iSCSI switches, and 1x SAN
- Data from production site will be replicated to DR site quite regularly (may be real-time)
- Sites utilize VMware ESXi/vSphere 6.5 and will have Acceleration Kits

Question:
We are in the process of an infrastructure upgrade, and am in the planning phase of implementation.  Once we have all of the above fully implemented, how can I configure a proper fail over and fail back configuration?  I am pretty sure I may be able to configure High Availability on a single site for a failure of a single host; would it be possible to configure some type of fail over should a disaster completely bring down an entire site (if building hosting production equipment burns down)?

Is it even possible to utilize VMware High Availability to fail over to another site/SAN?  If it was a temporary failover (power at production site is lost, then comes back), would there be an automatic fail back?

Can I use this method to temporarily take down a site for maintenance while having no impact to end users?

Thank you in advance for any assistance provided.
qec-diglookyouakInformation Technology ManagerAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Do you have a budget for Site Replication Manager, which will provide Fail Over and Fall Back ?

VMware HA is a function, which will restart VMs on other hosts in the Cluster if a Host fails. (from the same storage - SAN)

It depends on how automated you want the DR process to be.... you could realtime replicate Site A SAN to Site B SAN, and in the event Site A fails, Hosts at Site B, will be able to connect to SAN B, Register VMs from SAN B, and Power them On.

If the Hosts at Site B are already configured, and the replicated data is at Site B, you are ready to go......

Or you could have Stretched Cluster between Site A and Site B, hosts on Site A fail, all VMs will restart on Site B - but storage needs to be shared between ALL hosts at Site A and Site B, and you'll need low latency fast links between sites.

or Implement Site Recovery Manager, Veeam Backup and Replication, Nakivo Backup and Replication, or Zerto Replication

four different priced products which will ALL provide DR, failover and fallback
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qec-diglookyouakInformation Technology ManagerAuthor Commented:
Do you have any recommendations for a site replication manager?  SAN’s will be Dell SCv3020...
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
If there is no Replicator Adaptor, VMware SRM uses vSphere Replication.

https://www.vmware.com/uk/products/site-recovery-manager.html
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