International Business Machines Corporation

Michael T Roble

Karl Allen Nielsen

Robert Edward Galbraith

Mark A Johnson

David Ray Kahler

Michael Steven Faunce

Joseph R Edwards

Veera W Deenadhayalan

Mohan Babu Rowlands

Scott Alan Bauman

Michael J Anderson

Mark Yadlosky

Carlos Querol

A method and controller for implementing dynamic banding of a storage device, such as a Self Encrypting Device (SED) in a data storage array, and a design structure on which the subject controller circuit resides are provided. The controller dynamically identifies band boundaries for the storage device at the time a data storage array is created, when one or more devices are added into an existing data storage array, and when a replacement device is rebuilt into an exposed array, or an array with a failed device. A storage device band definition is provided based upon the dynamically identified band boundaries for the storage device.

Implementing dynamic banding of self encrypting drive

A storage controller and associated disk or disk portion where after the controller terminates its access to said disk or disk portion, data integrity problems in the disk or disk portion can be detected. Before host data associated with a write command is written from the cache memory to the disk or disk portion, an identity of the storage controller as a current user of the disk or disk portion and indication that the controller is operating in a mode it stores data in a cache is recorded on the disk or disk portion. If the storage controller is shut down abnormally, the record of the identity of the controller and the indication are not cleared. The storage controller is restarted or rebooted and the record is read to learn that the controller was using the disk or disk portion and operating in the foregoing mode before the shutdown.

System and method for detecting data integrity problems on a data storage device

Growing community of inventors

Mazeppa, MN, United States of America

Michael T Roble