Emc IP Holding Company LLC

Dell Products Inc.

Emc Corporation

Mahesh Kamat

Rahul Ugale

Satish Visvanathan

Shuang Liang

Yamini Allu

Prashant Pogde

Akshay Narayan Muramatti

Jayasekhar Konduru

Jehuda Shemer

Yossef Saad

Ravi Vijayakumar Chitloor

Bhimsen Bhanjois

Chegu Vinod

Sudhanshu Goswami

Ganesh Karuppur Rajagopalan

Philip N Shilane

George Mathew

Grant R Wallace

William Price Dawkins

Abhinav Duggal

Fabiano C Botelho

Ramprasad N Chinthekindi

Satish Kumar Kashi Visvanathan

Nitin Garg

Dheer Moghe

Lan Bai

Ashwani Mujoo

Fani Jenkins

Subrahmanyam Josyula

Guanlin Lu

Rahul Goyal

Arun Keshavamurthy

Chinthekindi Ramprasad

Ganesh Rajagopalan

Ganesh KaruppurRajagopalan

A system for providing data protection services for data hosted by composed information handling systems includes a system includes a system control processor manager. The manager obtains a data protection architecture; identifies, based on the data protection architecture, first computing resources for a first pool that provides a first set of functionalities of the data protection services; identifies, based on the data protection architecture, second computing resources for a second pool that provides a second set of functionalities of the data protection services; assigns, based on hardware components of the first computing resources, a portion of the first set of functionalities to a first portion of the first computing resources; assigns, based on the hardware components of the first computing resources, a second portion of the first set of functionalities to a second portion of the first computing resources; and instantiates, based on the assignments, the data protection architecture.

System and method for dynamic data protection architecture

A system for managing composed information handling systems includes information handling systems and a composed information handling system of the composed information handling systems, which includes at least one compute resource set, at least one control resource set, and at least one hardware resource set. The system also includes a system control processor that obtains a bare metal communication from a compute resource set indicating a write of data, writes a first copy of the data in a storage resource of the at least one hardware resource set, writes a second copy of the data in a trace volume, generates a backup of the data using the trace volume, and stores the backup in a storage.

System and method for backup generation using composed systems

A data management device includes a persistent storage and a processor. The persistent storage includes an object storage. The processor segments a file into file segments. The processor generates meta-data of the file segments. The processor stores a portion of the file segments in a data object of the object storage. The processor stores a portion of the meta-data of the file segments in a meta-data object of the object storage.

Metadata separated container format

A method of migrating or consolidating cloud data includes generating a container on a cloud platform and receiving, at the container, source metadata identifying a set of data to be migrated from a source cloud bucket associated with a source data domain to a destination cloud bucket associated with a destination data domain. The method further includes copying, by the container, set of data from the source cloud bucket to the destination cloud bucket based on the source metadata and generating, by the container, destination metadata for the set of data as stored at the destination cloud bucket.

Consolidation and migration of cloud data

A method, article of manufacture, and apparatus for creating a fingerprint to container id index is discussed. The index may be stored in-memory, on disk, and on a solid-state device. The index may be used to quickly locate a container identifier given a data segment fingerprint.

Solid state cache index for a deduplicate storage system

A data management device includes a cache for a data storage device and a processor. The cache includes cache devices that store a block set. The processor obtains a cache modification request that specifies a first block of the block set, updates a copy of a header of the block set in each of the cache devices based on the modification request, updates a copy of meta-data of the block set in each of the cache devices based on the cache modification request, and updates the first block in a first cache device of the cache devices based on the cache modification request.

Metadata protected sparse block set for SSD cache space management

Systems and methods for accessing data stored in multiple locations. A cache and a storage system are associated with an index. Entries in the index identify locations of data in both the cache and the storage system. When an index lookup occurs and an entry in the index identifies at least two locations for the data, the locations are ordered based on at least one factor and the data stored in the optimal location as determined from the at least one factor is returned.

Multiple location index

A garbage collection (GC) process within a deduplication backup network comprising a GC component identifying metadata stored in file system (FS) segments, storing the metadata in a metadata container locally on the server as well as on cloud storage, and reading the locally stored metadata container through the GC process to obtain metadata of the FS containers and determine live data regions of the FS containers, wherein the metadata contains fingerprints of all segments of the file system containers; and a copy forward component forwarding the live data regions to new containers written both locally on the server and on the cloud storage, writing live portions of the metadata container to a new metadata container written both locally on the server and on the cloud storage, and deleting dead compression regions from the cloud storage and deleting the original metadata container from local storage and the cloud storage.

Virtual copy forward method and system for garbage collection in cloud computing networks

A method, article of manufacture, and apparatus for locating data inside a deduplicated storage system is discussed. An index on a solid state device may contain a finger print to container identifier mapping. The container identifier may identify a logical container storing data related to the fingerprint. This data may therefore be located using the index given the fingerprint.

Method for locating data on a deduplicated storage system using a SSD cache index

A method for upgrading a file system in a data storage environment is provided. A storage system identifies a set of boundaries of one or more sets of hard disks based on a first block management data structure (BMDS), where the first BMDS includes information describing a storage volume representing the one or more sets of hard disks. For each identified boundary, the storage system identifies a data block range of a set of data blocks, where the data block range includes metadata of one set of hard disks that is stored on the set of data blocks. Further, the storage system concurrently generates a plurality of second BMDSs, each of the second BMDS corresponding to one of the sets of hard disks, including simultaneously retrieving metadata of the sets of hard disks, where the second BMDSs are constructed based on the retrieved metadata, representing an upgraded file system.

Method for parallel file system upgrade in virtual storage environment

A data storage device includes a cache for a data storage and a processor. The data storage includes an object storage. The processor obtains cache hardware heuristics data for a first time period; makes a first determination that the cache hardware heuristics data for the first time period does not meet a goal associated with the first time period; and populates the cache using a reduced size index cache in response to the first determination during a second time period.

Device and method for extending cache operational lifetime

Processing and memory resources are optimized in a data storage system by reading a region of compressed data containing desired data is read from primary storage, writing the compressed data to a memory page, selectively decompressing the compressed data to retrieve the desired data, and the writing the decompressed data back to the same page. State information about the start of the compressed data and the end of the decompressed data on the page is maintained to enable decompression to be halted and resumed on demand.

In-place resumable partial decompression

Embodiments are directed to a method for preserving temporal locality in disk-based backup systems by receiving a plurality of save streams each comprising a data stream and a metadata stream, directing the data streams to a plurality of respective data containers, and the metadata streams to a single shared metadata container, and assigning metadata streams using the shared metadata container to their own respective compression region to preserve locality at the compression region level.

Preserving temporal locality while multiplexing streams in a stream-informed segment layout (SISL) system

Aged disk storage systems are simulated for testing and evaluation purposes by writing test data to a clean disk using a data allocation policy that writes the test data to mimic the data layout and data distribution of the aged disk to be simulated. The test data may be written using a sequential data block allocation on the disk where blocks are written sequentially to the fresh, or by using either a fixed or a random jump allocation policy where test data is written in data blocks spaced from each other by either a fixed increment or spaced from each other randomly.

Simulating aged storage systems

A method, article of manufacture, and apparatus for maintaining a cache index inside a deduplicated storage system is discussed. A block allocation is requested from a persistent storage device, wherein the block allocation comprises a logical block for storing data. The logical block is determined to be unavailable. A next sequential block is requested from the persistent storage until an available logical block is located, the available logical block satisfying the block allocation. Data comprising a plurality of buckets is written to the available logical block.

Growing community of inventors

San Jose, CA, United States of America

Mahesh Kamat