Dell Products Inc.

Emc IP Holding Company LLC

Drew P Tonnesen

Arieh Don

Dan Aharoni

Vinay G Rao

Sanjib Mallick

Felix Shvaiger

Yaron Dar

Shoham Levy

Methods, apparatus, and processor-readable storage media for implementing host-controlled service levels are provided herein. An example computer-implemented method includes obtaining, at a storage node of a storage system, information comprising one or more identifiers and one or more service levels that are assigned to virtual machines identified by the one or more identifiers; extracting one of the one or more identifiers from an input-output operation received at the storage node; identifying, based on the extracted identifier, the service level that is assigned to the virtual machine that initiated the input-output operation; and controlling storage resources allocated for one or more additional input-output operations from one or more of the virtual machines based at least in part on the identified service level.

Configuring storage resources based on service levels

Methods and systems for managing storage of data are disclosed. To manage data storage, one or more access management frameworks may be used. One of the access management frameworks may be a storage array side framework that limits access to data based on user reservations. The user reservations may indicate the data subject to access limitation, the entity that requested the user reservation, and the extent of the access limitation. The user reservations may be used by the storage array to process receive input-output.

System and method for managing use of storage in distributed systems

A multi-path input-output (MPIO) driver in a host server reduces host-copy migration data transmission rate based on decrease in foreground IO response time. A baseline foreground IO response time measured before commencement of the host-copy migration is compared with a reference foreground IO response time measured after commencement of the host-copy migration. Increase in the foreground IO response time, expressed as a percentage or time value, that satisfies a predetermined limit will trigger reduction of the host-copy migration data transmission rate. The reference foreground IO response time is repeatedly measured and updated each time the host-copy migration data transmission rate is decreased.

Dynamic command feedback to limit impact of host-copy migration background copy load

Techniques for processing I/O operations may include: receiving, an I/O operation including a tag value denoting a process of a database application that issued the I/O operation; determining, in accordance with the tag value, whether the I/O operation is directed to a data file storing content of a database or a log file of recorded operations of the database; and responsive to determining the I/O operation is directed to a data file storing content of the database, performing processing including: determining a current configuration setting of the database that indicates whether the database is configured for use with the database application as an in-memory database; and determining, in accordance with current configuration setting of the database, a first service level objective for the I/O operation, wherein the first service level objective for the I/O operation is a default service level objective or a revised service level objective.

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Bedford, NH, United States of America

Drew P Tonnesen