| 主权项 |
1. A computer implemented method for creating a backup of data by a computer system being operatively coupled to a main memory and to one or more non-volatile storage media, wherein the creation of the backup comprises:
assigning a first memory space in the main memory to the data and loading the data into the first memory space; allocating a second memory space in the main memory for acting as container of one or more images of the data in the first memory space; automatically creating the one or more images of the data in the first memory space; and automatically storing the created one or more images in the second memory space and storing a respective copy of at least one of the one or more images in the one or more non-volatile storage media, the storing in the second memory space and in the storing in the one or more non-volatile storage media being executed in accordance with one or more predefined backup-rules, wherein the one or more non-volatile storage media are assigned to one or more storage tiers, wherein non-volatile storage media of a same tier share a common characteristic, the common characteristic being an I/O response a service level agreement, or a particular storage medium type, wherein the one or more storage tiers are configured in a hierarchical order in accordance with the common characteristic, wherein each of the one or more storage tiers has assigned at least one of the backup-rules, the respectively assigned backup-rule specifying a maximum number of the images that can be stored in the one or more storage media of the storage tier, and wherein in case storing one of the images in the one or more storage media of the storage tier would exceed the maximum number of the images of the storage tier. the oldest one of already stored images of the storage tier is overwritten by the one image. |
