International Business Machines Corporation

Jennifer Shinobu Shioya

Juan A Coronado

Lisa R Martinez

Beth Ann Peterson

Clint Alan Hardy

Sara Megan Coronado

Todd M Tosseth

Edgar Xavier Somoza

Ya-Huey Juan

Rashmi Chandra

Xavier Edgar Somoza

A computer-implemented method for preemptively migrating a failing extent includes receiving information of one or more failure conditions associated with an extent stored in a first storage portion of a first storage tier; predicting a failure of the extent based on the information; and selecting a second storage portion located in one of a plurality of storage tiers. The method also includes migrating the extent to the selected second storage portion. The selected second storage portion to which the extent is migrated is located in a lower storage tier. The lower storage tier includes less expensive and/or slower-to-access storage media than the first storage tier.

Preemptive relocation of failing data

Embodiments of the present disclosure may relate to methods and a computer program product for allowing writes based on a granularity level. The method for a storage server may include receiving a received granularity level for a particular volume of a storage device of a client computer including an effective duration for the received granularity level. The method may include receiving an anticipated write to the particular volume at an anticipated write granularity level. The method may include verifying whether the anticipated write granularity level substantially matches the received granularity level at the effective duration. The method may also include writing, in response to the anticipated write granularity level substantially matching the received granularity level at the effective duration, the anticipated write to the particular volume for the received granularity level.

Queuing read requests based on write requests

Provided are a computer program product, system, and method for adapter configuration in accordance with one embodiment of the present description, in which a set of configuration data structures including both a primary and a secondary configuration data structure, may be automatically created by automatic adapter configuration control logic. Upon detection of the replacement of the original host adapter with a replacement host adapter, the primary configuration data structure, for example, may be automatically selected to configure the replacement host adapter. In the event of a failure in the configuration process, the secondary configuration data structure may be automatically selected to configure the replacement host adapter. Other aspects of adapter configuration in accordance with the present description are described.

Adapter configuration for a storage area network

Data access to a storage tier on a client in a multi-tiered storage system

According to one embodiment, a method for preemptively migrating a failing extent includes receiving information of one or more failure conditions associated with an extent stored in a first storage portion of a first storage tier; predicting a failure of the extent based on the information; selecting a second storage portion located in one of a plurality of storage tiers; and migrating the extent to the selected second storage portion.

A main data storage system has a main computer-implemented storage control and data storage, and a user interface, the main storage control in communication with a local computer-implemented storage control of a local data storage system with local data storage. In response to a request to increase data storage from the user interface, the main storage control determines whether the main data storage is out of space. If so, the main storage control sends a command to the local storage control to create data space in local data storage. The local storage control creates the data space and associates the data space with the main storage control; and, in response to a command from the user interface to rebalance data storage, the local storage control sends the command to the main storage control to search for storage space sufficient for the data space in the main storage.

Obtaining additional data storage from another data storage system

Various embodiments for priority based depopulation of ranks in a computing storage environment are provided. In one embodiment, a method comprises prioritizing a plurality of ranks selected for depopulation. Highest priority and lowest priority ranks are marked and selected for depopulation. Lower priority ranks are placed in a queue in order of priority. An extent of one of the lower priority ranks is migrated to a rank not selected for depopulation. One of the lower priority ranks with newer data is selected for executing a read operation in response to a read operation to one of the lower priority ranks. At least one of the highest priority ranks is depopulated to at least one of a plurality of targeted ranks. The highest priority rank is left as unassigned to one of the plurality of targeted ranks until determining if the highest priority rank is to be assigned the targeted ranks.

Priority based depopulation of storage ranks

A main data storage system has a main computer-implemented storage control and data storage, and a user interface, the main storage control in communication with a local computer-implemented storage control of a local data storage system with local data storage. In response to a request to increase data storage from the user interface, the main storage control determines whether the main data storage is out of space. If so, the main storage control sends a command to the local storage control to create data space in local data storage. The local storage control creates the data space and associates the data space with the main storage control; and, in response to the local storage control creating data space in the local data storage and notifying the main storage control, the main storage control updates its metadata with respect to the data space.

According to one embodiment, a method for preemptively migrating a failing extent includes receiving information of one or more failure conditions associated with an extent stored in a first storage portion of a first storage tier; predicting a failure of the extent based on the information; selecting a second storage portion located in the first storage tier, a higher storage tier, and/or a lower storage tier; and migrating the extent to the selected second storage portion.

For a distributed high performance pool, the distributed high performance pool is provided with a fast rank. A management module promotes an extent from a storage pool to the distributed high performance pool in response to the extent satisfying promotion criteria. The distributed high performance pool and the storage pool are logically and physically distinct.

Distributed high performance pool

Exemplary method, system, and computer program product embodiments for priority based depopulation of ranks in a computing storage environment are provided. In one embodiment, by way of example only, multiple ranks selected for depopulation are prioritized. The highest priority rank of the multiple ranks is depopulated to a target rank. Additional system and computer program product embodiments are disclosed and provide related advantages.

A main data storage system has a main storage control and data storage, and a user interface, the main storage control in communication with a local storage control of a local data storage system with local data storage. In response to a request to increase data storage from the user interface, the main control determines whether the main data storage is out of space. If so, the main control sends a command to the local control to create data space in local data storage. The local control creates the data space and associates the data space with the main control; and, in response to the local control creating data space in the local data storage and notifying the main control, the main control updates its metadata with respect to the data space, creating the impression that all the data is stored in the main data storage.

Growing community of inventors

Vail, AZ, United States of America

Jennifer Shinobu Shioya