HPE StoreOnce is a family of deduplicating backup target systems from Hewlett Packard Enterprise. They are available as physical appliances and as StoreOnce VSA, a virtual appliance for VMware vSphere and Microsoft Hyper-V with the same feature set. Organisations use StoreOnce as a storage target for backup software, with Catalyst integration, deduplication-optimised replication between sites, and encryption of data at rest and in flight. The optional Cloud Bank Storage writes copies to object storage in a public or private cloud. The software runs on the customer's own infrastructure.
Hewlett Packard Enterprise is a publicly listed US company headquartered in Spring, Texas, with no majority shareholder. Because StoreOnce runs on-premises, backup data stays on systems under the customer's control and the vendor is not a processor of that data. Organisations that use Cloud Bank Storage decide themselves in which region and with which provider the object storage sits. Remote management, support and licensing services still involve a US supplier and should be assessed.