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G suite backup recovery12/24/2023 Enterprises without SANs may be literally trucking tapes back and forth between data centers, so as you can imagine their RPOs and RTOs can stretch into days. That can mean a large company spending the big bucks is willing to lose all the email sent to them for up to an hour after the system goes down, and go without access to email for an hour as well. RPO is how much data you're willing to lose when things go wrong, and RTO is how long you're willing to go without service after a disaster.įor a large enterprise running SANs, the RTO and RPO targets are an hour or less: the more you pay, the lower the numbers. How do you know if your disaster recovery solution is as strong as you need it to be? It's usually measured in two ways: RPO ( Recovery Point Objective) and RTO ( Recovery Time Objective). Indeed, it's one of the many reasons why the City of Los Angeles decided to go Google. They get best-in-class disaster recovery for free, no matter their size. Google Apps customers don't need to worry about any of this for the data they create and store within Google Apps. There are other backup options as well, but the story's the same: as redundancy increases, cost and complexity multiplies. Next they need to ensure the primary SAN talks to the backup SAN, so they have to implement robust bandwidth to handle terabytes of data flying back and forth without crippling their network. So big companies will often build the second data center far away, in a different 'threat zone', which creates even more management headaches. So the largest enterprises will build an entirely new data center somewhere else, with another set of identical mail servers, another SAN and more people to staff them.īut if, heaven forbid, disaster strikes both your data centers, you're toast ( check out this customer's experience with a fire). SANs are expensive, and even then, you're out of luck if your data center goes down. In larger businesses, companies will add a storage area network (SAN), which is a consolidated place for all storage. But the information created after their most recent backup is lost forever. If something goes wrong, they go to the tapes to restore the data that was saved before their last backup. They have a mail server, and copy the data to tape at regular daily or weekly intervals. Ideally a typical small business backs up its email. Taking email as an example, consider a few of the ways that companies protect their data from disruption. Will you be ready when disaster strikes? It's an uncomfortable question for many IT administrators, because answering it with confidence usually requires boatloads of money, immense complexity, and crossed fingers.
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