DR and BCP (Virtual Environment)

I am in the process of designing and implementing a DR solution for our business.

Current Scenario:

3 IBM Servers(Esxi Hosts)
SAN Storage-IBM
IBM Physical Server(Used as backup repository)
VMware 5.5 Essential Plus
Veeam B & R 7

What  I am looking for :
Phase 1:Offsite Backup(compliance requirement),Disaster Recovery .
Disk Based Offsite Backup
Products considered : Tandberg Quickstation (RDX) drives.
(co-location site with ISP)
Replicate the VM's to DR Site with near CDP frequency
Products considered : Unitrends(appliances onsite and co-location site), Quorum(onq) appliance(appliances onsite and co-location site). Double Take (with a SAN/NAS and Powerful Server at the co-location site).

In Phase 1 we are looking only at DR, and BCP to be covered in Phase 2. But we want use a scalable DR solution, so that we can utilize it for our BCP also.

Please share the pros and cons of the mentioned solutions:
Galaxy_ManAsked:
Who is Participating?
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Your hardware for DR, can be any VMWare certified server, using at minimum local disks. (no need for a SAN).

Just ensure, you have adequate resources CPU and Memory to run the VMs, you need to bring up at DR.

usually we have the same hardware at DR site, as Production.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Veeam Backup and Replication can Backup again to another DR site, to which a Tape can be connected, so you can backup your Backups to Tape.

So it can all be done using Veeam B & R 7
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Galaxy_ManAuthor Commented:
@andrew.

If we are to use Veeam as our DR, what kind of hardware is recommended for the DR?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
To store the backups or run the VMs?
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Galaxy_ManAuthor Commented:
Offsite backups will be done on Tandberg RDX (rotating Media)

Hardware at the DR Site, to replicate and run the Vm's.
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Galaxy_ManAuthor Commented:
great....we can work on the hardware part.

Next question is about the connectivity between the production and DR sites and also the frequency of replication and the impact of this on the production network performance. Our plan is to run colocation DR site with our ISP.

We have plans to do the baseline replication on the target DR server/storage in the production network and after that the DR server/storage will be installed on the DR site and it will get the incremental changes from then on.

and one final question, if we have an almost perfect replica in the DR site, how quickly can we failover?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You can replicate as often as you like, depending upon rate of change in the VMs, and your bandwidth between Production and DR Site.

You create Replication Jobs, which you can customize, so you will need to work out, do you want to replicate every 15 minutes, every 30 minutes, every 1 hour - dependant upon your business needs and downtime.

If all your replicas our at the DR Site, it's a simple case or Running a Failover Job. So just flick the switch.
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