ProfitBricks Redundancy

What type of redundancy does ProfitBricks provide, in order to restore virtual machines when a hardware failure occurs?

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Our storage servers provide a high level of internal redundancy. Each ProfitBricks data center is separated into two Availability Zones, with a fire section border in between them. Each block storage volume is RAID 10 in each Availability Zone, and the entire set of RAID 10 data blocks is instantly replicated to the other Availability Zone through an infiniband channel. In other words we maintain 4 copies of each data block, two in each Availability Zone.

All communication links and devices have at least single redundancy. In case a physical server with a customer VM fails, this VM will automatically restart on a different physical server.