Emc IP Holding Company LLC

Emc Corporation

Andrew P Kubicki

Vamsi K Vankamamidi

Steven D Sardella

Russell R Laporte

Shuyu Lee

Kurt William Everson

Brian K Bailey

Jingyan Zhao

Darrin Haug

Pavan Kumar Vutukuri

Joseph Perry

Joseph B Shimkus

Joseph C Caiani

Christine G Cao

Keith A P Morrissette

An apparatus comprises at least one processing device comprising a processor coupled to a memory; the at least one processing device being configured to: obtain a set of rebuild rate parameters for a given storage device from a storage array comprising a plurality of storage devices; and dynamically regulate a rebuild rate associated with a rebuild process for the given storage device based on the set of rebuild rate parameters obtained from the storage array for the given storage device. For example, the set of rebuild rate parameters include a rebuild capacity parameter and a rebuild time parameter.

Regulating storage device rebuild rate in a storage system

A method is used in managing disk drive power saving in data storage systems. Multiple data storage systems storage elements capable of operating in a power saving mode are identified and grouped into a RAID group. One or more logical units are created from the RAID group. The one or more logical units are exposed to a server. The one or more logical units are associated to an application at the server. Power saving settings are determined. A power saving mode based on the power saving settings is enabled.

Managing disk drive power savings in data storage systems

In a system comprising a plurality of components, characteristic data is stored on programmable read-only-memories (PROMS) on each component. The PROMs are coupled together via a simple bus, and data is retrieved from the PROMs using the bus. The collection of data from the PROMs provides the component characteristic data, and a portion of the component characteristic data is stored in one or more persistent media devices in the system, creating a last known good copy. The persistent storage device could be any device that does not lose data in the event of a loss of power.

Method and apparatus for preserving data in a high-availability system preserving device characteristic data

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Westborough, MA, United States of America

Andrew P Kubicki