| 摘要 |
An illustrative “open archive” architecture relieves the immediate need to add network-attached storage (NAS) devices to a storage management system. The open archive architecture provides streamlined access to live production data, which originally was stored on a NAS device but which is archived to secondary storage to free up NAS space. An open-archive server coordinates with an open-archive layer that operates on the NAS device. The open-archive server identifies data sets on the NAS that meet archiving criteria, which are then automatically moved to an open archive in secondary storage. The open archive layer intercepts data-access calls coming into the NAS device, e.g., open calls, read calls, write calls. The intercepted calls are reported to the open-archive server for analysis. If the open-archive server determines that the data referenced in an intercepted call is stored in the open archive, the open-archive server initiates a restore job that recovers the data from secondary storage and stores it back on the NAS device. The intercepted call may now be served from the NAS. These operations occur automatically and do not involve users or their computing devices, and the computing devices operate without data agents for the NAS-based data. |
| 主权项 |
1. A method for automatically archiving primary data from a storage device to secondary storage and restoring it to the storage device when accessed, the method comprising:
executing a monitoring utility on a network-attached storage device in a storage management system, the network-attached storage device storing primary data that is accessible to a client computing device; determining that a data set of primary data stored in the network-attached storage device satisfies an archiving criterion by analyzing, by a server component of the storage management system, at least some of the primary data stored in the network-attached storage device; archiving the data set to a secondary storage device in the storage management system, wherein the archiving removes the archived data set from the network-attached storage device; generating one or more stubs for the archived data set; storing the one or more stubs to the network-attached storage device; determining, by the server component, that a first access call from the client computing device is directed to first data in the archived data set, the access call including one or more of an open call, a read call, and a write call, and (a) restoring the first data to the network-attached storage device, and (b) removing one or more stubs corresponding to the restored first data; and serving the first access call, from the restored first data on the network-attached storage device, to the client computing device, without intervention from a user. |
