摘要:
Tracking storage resources includes providing a table containing storage resources along with capabilities and statuses thereof, updating the table in response to a change of status of a storage resource, updating the table in response to a change in capabilities of a storage resource and, in response to an inquiry for a storage resource having a particular capability, searching the table for a storage resource having the particular capability. Tracking storage resources may also include adding an element to the table in response to a new resource being added to the system. The capabilities may include RAID striping, data deduplication, and green operation. The status may be one of: on-line, off-line, and full.
摘要:
Providing a service in a storage system includes using a predicate that corresponds to a subset of storage objects in a set of storage objects stored in the storage system. The predicate is used to select or reject the objects to which the service is to be provided. The predicate is applied to the set of storage objects to obtain the subset of storage objects. The service is then invoked for the subset of storage objects selected according to the predicate. A trigger event causes invocation of the service. The trigger event may be periodic and/or may be a storage object lifecycle event, a storage object access related event, an event corresponding to a state change of the storage system, or an event that is external to the storage system. The trigger event may include the predicate being modified.
摘要:
A system, program storage device, and method of optimizing data placement on a storage device, the method comprising establishing a specified time constraint for which the storage device is to delete data stored thereon; dividing a data object into a plurality of data bits; programming a block of data and the data bits with a logic operand if the storage device is incapable of deleting the data within the specified time constraint; creating an encoded block of data from the programmed block of data and the data bits; organizing the encoded block of data and the data bits in the storage device according to data deletion requirements; and removing the data bits from the storage device if the data bits are organized within a specified data deletion requirement, wherein the data bits are removed using a data shredding process, and wherein the logic operand comprises an exclusive-or (XOR) operator.