International Business Machines Corporation

Rashmi Chandra

Todd Charles Sorenson

Larry Juarez

Herve G P Andre

Tony Leung

Clint Alan Hardy

Matthew D Carson

Jacob Lee Sheppard

Jennifer Shinobu Shioya

Ya-Huey Juan

Igor Popov

Glynis G Dsouza

Provided are a computer program product, system, and method for a computer program product, system, and method for determining an availability score based on available resources of different resource types in a distributed computing environment of storage servers to determine whether to perform a failure operation for one of the storage servers. A health status monitor program deployed in the storage servers performs: maintaining information indicating availability of a plurality of storage server resources for a plurality of resource types; calculating an availability score as a function of a number of available resources of the resource types; and transmitting information on the availability score to a management program. The management program uses the transmitted information to determine whether to migrate services from the storage server from which the availability score is received to at least one of the other storage servers in the distributed computing environment.

Determining an availability score based on available resources at a first server to determine whether to direct processing from a first server to a second server

One general aspect of encryption key management by a data storage controller which communicates with asynchronous key servers is directed to issue a prepare for enable command to request an encryption key from an encryption key server. State machine logic transitions from an unconfigured state to a prepare for enable state in which key server mirror management logic receives from a key server a requested encryption key and caches the received key. In an enabling state, enablement logic verifies successful mirroring of the encryption key by a key server to another key server and activates the encryption key if key mirroring by key servers is verified. In an enabled state, data is encrypted using the verified, activated encryption key. Other features and aspects may be realized, depending upon the particular application.

Encryption key management in a data storage system communicating with asynchronous key servers

Determining an availability score based on available resources of different resource types in a cloud computing environment of storage servers providing cloud services to customers in the cloud computing environment to determine whether to perform a failure operation for one of the storage servers

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

A method for reducing stress on a RAID under rebuild is disclosed herein. In one embodiment, such a method includes performing the following actions while the RAID is undergoing a rebuild process: (1) redirect writes intended for the RAID to a temporary storage area located on a same primary storage system as the RAID, and (2) redirect reads intended for the RAID to a secondary storage system configured to store a copy of data in the RAID. The method is further configured to perform the following actions upon completing the rebuild process: (3) update the rebuilt RAID to reflect writes made to the temporary storage area during the rebuild process, and (4) redirect reads and writes to the rebuilt RAID. A corresponding system and computer program product are also disclosed.

Reducing stress on RAIDS under rebuild

Provided are a computer program product, system, and method for determining an availability score based on available resources of different resource types in a storage system to determine whether to perform a failure operation for the storage system. Information is maintained indicating availability of a plurality of storage system resources for a plurality of resource types. An availability score is calculated as a function of a number of available resources of the resource types. Information on the availability score is transmitted to a failure manager. The failure manager uses the transmitted availability information to determine whether to initiate a storage system failure mode for the storage system.

Determining an availability score based on available resources of different resource types in a storage system to determine whether to perform a failure operation for the storage system

Determining an availability score based on available resources of different resource types in a distributed computing environment of storage servers to determine whether to perform a failure operation for one of the storage servers

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San Jose, CA, United States of America

Rashmi Chandra