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RAID levels and benefits explained

RAID can enable better storage performance and higher availability, and there are many different RAID types. Read about the different levels of RAID and where they work best.

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Definitions
  • OpenStack Block Storage (Cinder)

    OpenStack Block Storage (Cinder) is open source software designed to create and manage a service that provides persistent data storage to cloud computing applications.

  • SATA Express (SATAe)

    SATA Express (SATAe or Serial ATA Express) is a bus interface to connect storage devices to a computer motherboard, supporting SATA and PCI Express protocols simultaneously.

  • DIMM (dual in-line memory module)

    A DIMM (dual in-line memory module) is the standard memory card used in servers and PCs.

Browse Storage Topics

Application storage

Whether your organization is using enterprise databases, ERP systems, or productivity tools for Windows or Mac computers, you need to know how to best manage your application storage. Each application requires unique application storage services to run efficiently and give users the best experience.

Recent Definitions

  • nearline storage

    Nearline storage is the on-site storage of data on removable media.

  • application-aware storage

    Application-aware storage is a storage system with built-in intelligence about relevant applications and their utilization patterns.

  • I/O virtualization (IOV)

    I/O virtualization (IOV), or input/output virtualization, is technology that uses software to abstract upper-layer protocols from physical connections or physical transports.

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Cloud storage

The cloud storage topics page provides news articles, tips, tutorials, guides, special reports and podcasts for data storage professionals looking for cloud storage best practices. Get advice on cloud storage services, cloud computing in a storage environment, cloud archive, hybrid cloud storage, cloud backup, private cloud storage, public cloud storage, cloud DR and more.

Recent Definitions

  • OpenStack Block Storage (Cinder)

    OpenStack Block Storage (Cinder) is open source software designed to create and manage a service that provides persistent data storage to cloud computing applications.

  • pay-as-you-grow pricing

    Vendors that offer a pay-as-you-grow storage allow customers with growing environments to acquire capacity after an array has been installed through the purchase of licenses.

  • RADOS Block Device (RBD)

    A RADOS Block Device (RBD) is software that facilitates the storage of block-based data in the open source Ceph distributed storage system.

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Flash memory

This topics page includes the latest news, tips and tricks for flash memory topics. Learn about the many types of flash memory, including non-volatile memory, NAND and NOR flash, and the solid-state drives powered by NAND memory. Flash is increasingly becoming a fundamental part of enterprise storage. And keep up with new developments such as NVMe, Optane and 3D XPoint.

Recent Definitions

  • Secure Digital card (SD card)

    SD cards use flash memory to provide nonvolatile storage. They are more rugged than traditional storage media and are used in more portable storage media.

  • SmartMedia card

    A SmartMedia card (originally called a solid-state floppy disk card, or SSFDC) is a memory card developed by Toshiba that uses flash memory to store data and to make it portable among devices, such as digital cameras, personal digital assistants (PDAs), and other handheld devices.

  • Memory Stick

    Developed by Sony, the Memory Stick is a digital data storage technology with up to 10 times the storage capacity of a 3.5 diskette.

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Object storage

Object-based storage is an alternative to file storage for unstructured data. Object technology contains extended metadata. Each object has a unique identifier that lets a server retrieve it from any physical location. Object storage use cases include cloud storage, photos, video, audio and large image files. Object storage systems can be software-only or hardware based.

Recent Definitions

  • object storage

    Object storage, also called object-based storage, is an approach to addressing and manipulating units of storage called objects, in which files and metadata are combined.

  • Caringo Swarm

    Swarm is software designed to store unstructured data on an object storage platform. Unique indentifiers allow objects to be tracked using the search function.

  • RADOS (Reliable Autonomic Distributed Object Store)

    Reliable Autonomic Distributed Object Store (RADOS) is an object storage service with the ability to scale to thousands of hardware devices by making use of management software that runs on each of the individual nodes. RADOS is an integral part of the Ceph distributed storage system.

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Primary storage devices

Primary storage devices refer to storage hardware for data in active use, in contrast to storage used for backup purposes. They include SAN and NAS primary storage devices, non-volatile flash storage and other types of storage media. Find resources about primary storage and storage hardware, including RAID arrays and storage arrays, on this topic page.

Recent Definitions

  • OpenStack Block Storage (Cinder)

    OpenStack Block Storage (Cinder) is open source software designed to create and manage a service that provides persistent data storage to cloud computing applications.

  • SATA Express (SATAe)

    SATA Express (SATAe or Serial ATA Express) is a bus interface to connect storage devices to a computer motherboard, supporting SATA and PCI Express protocols simultaneously.

  • unified storage (multiprotocol storage)

    Unified storage -- sometimes called network unified storage or multiprotocol storage -- is a storage system that runs and manages files and applications from a single device.

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Software-defined storage

Software-defined storage is part of a larger software-defined data center trend. Software-defined architecture places an emphasis on services rather than the hardware. Software-defined storage can be used to virtualize x86 servers or other storage hardware, or manage multiple storage systems. It is a key piece of hyper-converged and other server-based storage architectures.

Recent Definitions

  • DIMM (dual in-line memory module)

    A DIMM (dual in-line memory module) is the standard memory card used in servers and PCs.

  • application-aware storage

    Application-aware storage is a storage system with built-in intelligence about relevant applications and their utilization patterns.

  • Remote Direct Memory Access (RDMA)

    Remote Direct Memory Access (RDMA) is a technology that allows computers in a network to exchange data in main memory without involving the processor, cache or OS.

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Solid-state storage

Solid-state storage is becoming common for SAN, NAS and even emerging systems such as hyper-converged infrastructure. Look for guidance and advice on solid-state storage topics such as solid-state drives (SSDs) and devices, SSD prices and performance, solid-state memory, flash memory, and emerging flash technologies such as NVMe, Optane and 3D XPoint.

Recent Definitions

  • DIMM (dual in-line memory module)

    A DIMM (dual in-line memory module) is the standard memory card used in servers and PCs.

  • 3D XPoint

    3D XPoint is memory storage technology jointly developed by Intel and Micron Technology Inc.

  • non-volatile memory (NVM)

    Non-volatile memory (NVMe) is a semiconductor technology that does not require a continuous power supply to retain the data or program code stored in a computing device.

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Storage management and analytics

Find the latest news and buying advice about storage management and analytics on this topics page. Storage data analytics collects metrics and data logs for predictive analysis. Modern analytics applications are often SaaS-based and can be understood and used without the expertise required to use comprehensive third-party storage resource management tools.

Recent Definitions

  • nearline storage

    Nearline storage is the on-site storage of data on removable media.

  • non-volatile memory (NVM)

    Non-volatile memory (NVMe) is a semiconductor technology that does not require a continuous power supply to retain the data or program code stored in a computing device.

  • open source storage

    Open source storage is data storage software developed in a public, collaborative manner that permits the free use, distribution and modification of the source code.

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Storage market research reports

Storage market research helps any technology professional make educated decisions about which storage technologies to select. Find the latest news and reports in this topic section about the data storage market, including enterprise storage and cloud storage leaders, trends and analysis. The news section tracks product technology comparisons and market share reports.

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Storage vendors

This topics page collects the latest information on storage vendors and product information, including buying guides. It covers top enterprise storage vendors, data storage vendors, and cloud storage and online storage providers, and tracks mergers and acquisitions, executive shuffles and funding information. The news section tracks leading storage vendors and startups.

Recent Definitions

  • Panasas

    Panasas is a scale-out NAS (network-attached storage) vendor that produces hardware and software for demanding technical and enterprise environments.

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA platforms.

  • Dell EMC World

    Dell EMC World is an annual event for Dell EMC customers that showcases new and emerging technologies in the virtualization, cloud and data storage market.

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SearchCompliance

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • computer exploit

    A computer exploit, or exploit, is an attack on a computer system, especially one that takes advantage of a particular ...

  • cyberwarfare

    Cyberwarfare is computer- or network-based conflict involving politically motivated attacks by a nation-state on another ...

  • insider threat

    Insider threat is a generic term for a threat to an organization's security or data that comes from within.

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

  • OpenStack Block Storage (Cinder)

    OpenStack Block Storage (Cinder) is open source software designed to create and manage a service that provides persistent data ...

  • SATA Express (SATAe)

    SATA Express (SATAe or Serial ATA Express) is a bus interface to connect storage devices to a computer motherboard, supporting ...

  • DIMM (dual in-line memory module)

    A DIMM (dual in-line memory module) is the standard memory card used in servers and PCs.

SearchSolidStateStorage

  • hybrid flash array

    A hybrid flash array is a solid-state storage system that contains a mix of flash memory drives and hard disk drives.

  • 3D XPoint

    3D XPoint is memory storage technology jointly developed by Intel and Micron Technology Inc.

  • RRAM or ReRAM (resistive RAM)

    RRAM or ReRAM (resistive random access memory) is a form of nonvolatile storage that operates by changing the resistance of a ...

SearchCloudStorage

  • Google Cloud Storage

    Google Cloud Storage is an enterprise public cloud storage platform that can house large unstructured data sets.

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

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