Emc IP Holding Company LLC

Alexander Shraifel

Nickolay Alexandrovich Dalmatov

Alex Kulakovsky

Sally Golan

Erez Bashi

An apparatus in one embodiment is configured to extract a set of components utilized in a first version of a storage controller operating system (OS) to a designated partition of a storage system on which the first version of the storage controller OS is to be installed, and to identify changes to be applied for installing the first version of the storage controller OS by comparing content of the extracted set of components utilized in the first version of the storage controller OS with content of components utilized in a second version of the storage controller OS that is currently installed. The apparatus is also configured to apply, utilizing at least one rule corresponding to at least one component utilized in the first version of the storage controller OS, at least one of the identified changes to upgrade to the first version of the storage controller OS.

Upgrading a storage controller operating system without rebooting a storage system

Techniques are presented for maintaining data distributed across a plurality of storage drives (drives) in a robust manner. A method includes (a) collecting physical state information from each drive of the plurality of drives, (b) generating a predicted failure probability of each drive based on the collected physical state information from that drive, the predicted failure probability indicating a likelihood that that drive will fail within a predetermined period of time, and (c) rearranging a distribution of data across the plurality of drives to minimize a probability of DU/DL. Systems, apparatuses, and computer program products for performing similar methods are also provided.

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Maalot, Israel

Alexander Shraifel