Virtualisation and DR

We have a customer who is looking to virtualise their server enviroment and install A SAN to provide business continuity and disaster recovery with the 2nd office acting as the backup site.

Does anyone know of any SAN/replication vendor/technology which is known to work well in an OII VFP enviroment. Can't use SQL due to modules used.

I suppose any to avoid may be helpful as well.

Thanks
Colin

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alan-bourke

Are they considering replicating a virtual server image in realtime ?

If it's some sort of replication solution that runs within the OS, virtual or otherwise, I don't think *any* technology like this including online backup can be guaranteed with something like Opera II. There are hundreds of data files, and a data update can involve one or many. What happens if the replication solution can back up IHEAD but can't back up ITRAN due to a lock?

If you had Opera 3 Scheduler set to log users out and close down at a set time, and the replication or backup solution could then provide a 'snapshot' at some later point, you probably would be OK.

alan-bourke

Also, how you back up is much less important than how you restore. Fine, the backup might trickle away in the background but how long will it take to restore GBs of data if it comes to it? If they're just replicating the virtual server image, is there granularity there to just restore Opera data or would they have to roll back the entire server image ? And so on.

I would make damn sure that the customer also takes internal Opera II zip backups onto a USB drive or something as well!

colin-avey

Thanks for input Alan.

Deffinately some form of "normal" backup as final fallback, probably disk to disk.

The plan is for 2nd site data only to be used/needed in case physically not possible to access primary site. probably terminal services/rdc from tempory office.

Some vendors have near realtime replication of writes by trapping the writes and queuing.

I was hoping i wasn't the 1st to be doing this.

Colin

unknown

Not something I've done personally but I understand the higher-end VMWare products have the near realtime replication of which you make mention. For lower end products I think Veeam do a similar product.

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