Redirection of an ongoing backup

A system comprising:

• a metadata storage device;
• and
• a redirection module coupled to the metadata storage device, wherein the redirection module is configured to:
• detect a request for a backup application to perform a backup;
• cause backup information generated by the backup application to be stored on a first storage device, in response to detection of the request;
• receive an indication that an amount of space available on the first storage device is less than a threshold amount, subsequent to causing the backup information to be stored on the first storage device and prior to completion of the backup;
• cause subsequent backup information to be stored on a second storage device in response to the indication, wherein the subsequent backup information is stored on the second storage device prior to completion of the backup;
• and
• write at least a portion of metadata associated with the backup to the metadata storage device, wherein the metadata identifies that information associated with the backup is stored on both the first storage device and the second storage device.

A computer readable storage medium comprising program instructions executable to:

• detect a request for a backup application to perform a backup;
• cause backup information generated by the backup application to be stored on a first storage device, in response to detection of the request;
• receive an indication that an amount of space available on the first storage device is less than a threshold amount, subsequent to causing the backup information generated by the backup application to be stored on the first storage device and prior to completion of the backup;
• cause subsequent backup information generated by the backup application to be stored on a second storage device in response to the indication, wherein the subsequent backup information is stored on the second storage device prior to completion of the backup;
• and
• generate at least a portion of metadata associated with the backup, wherein the metadata identifies that information associated with the backup is stored on both the first storage device and the second storage device.

A system comprising:

• means for detecting a request for a backup application to perform a backup;
• means for causing backup information generated by the backup application to be stored on a first storage device, in response to detection of the request;
• means for receiving an indication that an amount of space available on the first storage device is less than a threshold amount, subsequent to causing the backup information to be stored on the first storage device and prior to completion of the backup;
• means for causing subsequent backup information generated by the backup application to be stored on a second storage device in response to the indication, wherein the subsequent backup information is stored on the second storage device prior to completion of the backup;
• means for generating at least a portion of metadata associated with the backup, wherein the metadata identifies that information associated with the backup is stored on both the first storage device and the second storage device;
• and
• means for storing the metadata.