They do it with mirrors: Nasuni reveals new cloudy protection plan
We were up when Azure was down, boasts CEO
Enterprise storage upstart Nasuni claims that customers who store their data in Nasuni front-ended clouds have never lost any of their data. Nevertheless, the company is adding mirroring to its service to guard against cloud data loss.
Nasuni - whose C-round funding El Reg covered last year - says its customers, who have Service Level Agreements, "have never experienced a service outage".
Yet CEO Andres Rodriguez says: "Customers have made it clear that there’s no such thing as too much data protection when it comes to cloud storage …
"All of our customers are still covered by our SLA, but for those who want to go the extra mile to protect their data … Nasuni offers Cloud Mirroring.”
Customers' data is stored in a primary cloud. With cloud mirroring a copy is replicated - mirrored - to a second cloud, with Nasuni's cloud storage gateway system synchronising the data between the clouds. No customer action is required. If the primary cloud fails, then data is available from the secondary one.
There was an Azure outage in February, thanks an expired Azure SSL certificate. Nasuni says it worked around this bug, ensuring "every one [of its customers] using Azure could continue to go about business as usual".
El Reg's storage desk views Nasuni's cloud storage gateway product as analogous to a cached storage array controller whose disk drives reside in a commercial cloud service, such as Azure or Amazon's S3. ®