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Choose between NAND vs. NOR flash memory

When comparing NAND flash memory to NOR, it's important to examine the structural differences to understand which type of non-volatile memory is best suited for some applications.

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Definitions
  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science professionals, along with the general public, when referring to amounts of computer data using the metric system.

  • megabytes per second (MBps)

    Megabytes per second (MBps) is a unit of measurement for data transfer speed to and from a computer storage device.

  • zettabyte

    A zettabyte is a unit of measurement used by technology professionals and the general public to describe a computer or other device's storage capacity.

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

  • QLC NAND

    QLC NAND (quad-level cell NAND) is a form of NAND flash memory that can store up to four bits of data per memory cell.

  • enterprise storage

    Enterprise storage is a centralized repository for business information that provides common data management, protection and data sharing functions through connections to computer systems.

  • storage at the edge

    Storage at the edge is the collective methods and technologies that capture and retain digital information at the periphery of the network, as close to the originating source as possible.

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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

  • Hybrid Cloud Storage

    Hybrid cloud storage is an approach to managing storage that uses both local and off-site resources.

  • blockchain storage

    Blockchain storage is a way of saving data in a decentralized network which utilizes the unused hard disk space of users across the world to store files.

  • public cloud storage

    Public cloud storage, also called storage-as-a-service or online storage is a service model that provides data storage on a pay-per-use basis, similar to the way a public utility like electric or gas provides and charges for services.

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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

  • storage class memory (SCM)

    Storage class memory (SCM) is a type of NAND flash that includes a power source to ensure that data won't be lost due to a system crash or power failure.

  • NVRAM (non-volatile random-access memory)

    NVRAM (non-volatile random-access memory) refers to computer memory that can hold data even when power to the memory chips has been turned off.

  • 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.

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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

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, managed, backed up and made available to users over a network (typically the internet).

  • dedicated cloud

    A dedicated cloud is a single-tenant cloud infrastructure, which essentially acts as an isolated, single-tenant public cloud.

  • Dell EMC Atmos

    Dell EMC Atmos is an object-based cloud storage platform that was released in November 2008 by EMC.

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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

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks or solid-state drives to protect data in the case of a drive failure.

  • secondary storage

    Secondary storage is storage for noncritical data that will not be frequently accessed.

  • logical unit number (LUN)

    A logical unit number (LUN) is a unique identifier for designating an individual or collection of physical or virtual storage devices that execute input/output (I/O) commands with a host computer, as defined by the Small System Computer Interface (SCSI) standard.

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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

  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science professionals, along with the general public, when referring to amounts of computer data using the metric system.

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks or solid-state drives to protect data in the case of a drive failure.

  • cache memory

    Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access more quickly than it can access regular random access memory (RAM).

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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

  • 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.

  • NOR flash memory

    NOR flash memory is one of two types of non-volatile storage technologies.

  • 3D NAND flash

    3D NAND is a type of non-volatile flash memory in which the memory cells are stacked vertically in multiple layers.

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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

  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science professionals, along with the general public, when referring to amounts of computer data using the metric system.

  • megabytes per second (MBps)

    Megabytes per second (MBps) is a unit of measurement for data transfer speed to and from a computer storage device.

  • zettabyte

    A zettabyte is a unit of measurement used by technology professionals and the general public to describe a computer or other device's storage capacity.

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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

  • Pure Storage

    Pure Storage is a provider of enterprise data flash storage solutions designed to substitute for electromechanical disk arrays.

  • Actifio

    Actifio is a software vendor in Waltham, Mass., that specializes in copy data management (CDM).

  • LTO (Linear Tape-Open) tape

    LTO (Linear Tape-Open) tape is an open-format tape storage technology created by Hewlett-Packard (HP), International Business Machines (IBM) and Seagate Technology.

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SearchCompliance

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • privacy compliance

    Privacy compliance is a company's accordance with established personal information protection guidelines, specifications or ...

  • data governance policy

    A data governance policy is a documented set of guidelines for ensuring that an organization's data and information assets are ...

SearchSecurity

SearchHealthIT

  • telemedicine (telehealth)

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

  • Project Nightingale

    Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

  • medical practice management (MPM) software

    Medical practice management (MPM) software is a collection of computerized services used by healthcare professionals and ...

SearchDisasterRecovery

  • disaster recovery (DR) test

    A disaster recovery test (DR test) is the examination of each step in a disaster recovery plan as outlined in an organization's ...

  • crisis management plan (CMP)

    A crisis management plan (CMP) is a document that outlines the processes an organization will use to respond to a critical ...

  • pandemic plan

    A pandemic plan is a documented strategy for business continuity in the event of a widespread outbreak of a dangerous infectious ...

SearchStorage

  • megabytes per second (MBps)

    Megabytes per second (MBps) is a unit of measurement for data transfer speed to and from a computer storage device.

  • zettabyte

    A zettabyte is a unit of measurement used by technology professionals and the general public to describe a computer or other ...

  • 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.

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