3) Use multiple cloud providers.
Still don't feel protected even with a multi-AZ, multi-region approach? Use multiple cloud providers then, advises Drue Reeves, a Gartner cloud analyst. This comes with caveats as well, since some service providers share common data center resources. Reeves says customers can check with individual providers to see if they are sharing resources with any others that the customer may be using.
4) Outline availability in SLAs.
Beyond taking technical measures, customers can take nontechnical steps, such as negotiating with their cloud service provider regarding service-level agreements (SLA) that specify penalties to be paid in the case of a disruption. If a customer is using a cloud provider for disaster recovery services, the SLA might mandate as much as 99.999 percent availability.
5) If you can't take the heat, stay away from the fire.
If a user is extremely concerned about high availability of data and applications in the cloud, Steve Hendrick, an IDC analyst, says perhaps that means the customer isn't ready for a public cloud. Hendrick says it's a simple equation: The more mission critical the data and compute resources are, the more protections for resiliency and high availability the customer should put in place.
Network World staff writer Brandon Butler covers cloud computing and social media. He can be reached at BButler@nww.com and found on Twitter at @BButlerNWW.