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  • Database Magazine
  • Glossary of Terms
    • A
      • Archive
      • Active backup for Office 365
      • AWS Backup
      • Active Directory
      • Agent
      • Anti-ransomware solutions
    • B
      • Backup
      • Backup and Recovery
      • Backup as a service
      • Bare-metal backup
      • Backup repository
      • Backup schedule
      • Backup Solutions
      • Business Continuity
    • C
      • Cloud Backup
      • Continuous Data Protection (CDP)
      • Compression
      • Consistency check
      • Cold Backup
      • Cloud Data Management (CDM)
    • D
      • Data Deduplication
      • Disaster Recovery (DR)
      • Differential Backup
      • Disk-to-Disk (D2D) Backup
      • Disaster Recovery (DR)
    • E
      • Encryption
      • Endpoint Backup
      • Erasure Coding
      • Export/Import
      • Enterprise Backup Software
    • F
      • Full Backup
      • Failover
      • File-Level Backup
      • File Sync and Share
      • Fireproof and Waterproof Storage
    • G
      • Grandfather-Father-Son (GFS)
      • Granular Recovery
      • Geographically Dispersed Backup
      • Ghost Imaging
      • Global Deduplication
    • H
      • Hybrid Backup
      • Hot Backup
      • High Availability (HA)
      • Hard Disk Drive (HDD)
      • Hybrid Cloud Backup
    • I
      • Incremental Backup
      • Image-based Backup
      • Instant Recovery
      • Integrity Check
      • Infrastructure as a Service (IaaS)
    • J
      • Journaling
      • Job Scheduler
      • Just-in-Time Recovery
      • Journal-Based Recovery
      • Jumbo Frames
    • K
      • Key Management
      • Kernel-Based Recovery
      • Kickstart
      • Kept Versions
      • Kill Switch
    • L
      • Long-Term Retention
      • Log-Based Recovery
      • Local Backup
      • Latency
      • Load Balancing
    • M
      • Metadata
      • Mirroring
      • Multi-Site Replication
      • Media Rotation
      • Mounting
    • N
      • Nearline Storage
      • Network-Attached Storage (NAS)
      • Non-Destructive Recovery
    • O
      • Offsite Backup
      • Online Backup
      • Object Storage
      • Offsite Replication
      • Open File Backup
      • Overwrite Protection
      • One-Click Restore
    • P
      • Point-in-Time Recovery
      • Primary Storage
      • Physical Backup
      • Private Cloud Backup
      • P2V (Physical-to-Virtual) Conversion
    • Q
      • Quiesce
      • Quick Recovery
      • Quota Management
      • Quality of Service (QoS)
      • Query-Based Recovery
    • R
      • Recovery Point Objective (RPO)
      • Recovery Time Objective (RTO)
      • Replication
      • Restore
      • Retention Policy
    • S
      • Snapshot
      • Storage Area Network (SAN)
      • Secondary Storage
      • Single Point of Failure (SPOF)
      • Synthetic Full Backup
    • T
      • Tape Backup
      • Two-Factor Authentication (2FA)
      • Thin Provisioning
      • Test Restore
      • Transaction Log
    • U
      • Universal Restore
    • V
      • Versioning
      • Virtual Machine (VM) Backup
      • Verification
      • Vaulting
      • Virtual Tape Library (VTL)
    • W
      • Warm Site
      • Workload Mobility
      • WAN Acceleration
      • Write-Once, Read-Many (WORM)
      • Windows Backup
    • X
      • XOR (Exclusive OR)
    • Y
      • Yearly Backup
    • Z
      • Zero Data Loss
  • Best Practices and Tips
    • How to backup Microsoft 365 using third-party backup tools
  • FAQs
    • Does Office 365 have backups?
    • What is the best backup for Office 365?
    • How do I backup my Office 365 backup?
    • What is the backup tool for Office 365?
    • Does Office 365 have storage?
    • Is OneDrive a reliable backup solution?
    • What is an Incremental Backup?
    • Does VMware have a backup tool?
    • What is VMware considered backup?
    • What are the types of backup in VMware?
    • Is VMware snapshot a backup?
    • What is the best way to backup a Hyper-V VM?
    • How do I create a backup in Hyper-V?
    • Should you backup a Hyper-V host?
    • What is the difference between Hyper-V snapshot and backup?
    • What is the disaster recovery in IT industry?
    • What should an IT disaster recovery plan include?
    • What are the main steps in IT disaster recovery?
    • What is the difference between IT security and disaster recovery?
    • What is a NAS backup?
    • How do I backup my NAS data?
    • Can NAS be used as a backup?
    • What is Nutanix used for?
    • What is Nutanix storage?
    • What is RPO and RTO in Nutanix?
    • What is MSP backup?
    • What is managed backup service?
    • How do I restore my MSP backup?
    • What is Azure Backup?
    • What is the purpose of Azure Backup?
    • What are the different types of Azure cloud backups?
    • Is Azure Backup a PaaS?
    • What are the downsides of Backblaze?
    • Does Backblaze backup everything?
    • Is Backblaze better than Google Drive?
  • Resources
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  • Definition
  • Explanation
  • Related terms
  1. Glossary of Terms
  2. W

Write-Once, Read-Many (WORM)

Understand the concept of Write-Once, Read-Many (WORM) and its application in data storage.

Definition

Write-Once, Read-Many (WORM) is a data storage technology that allows data to be written only once and then read multiple times. It ensures data immutability, meaning that once data is written, it cannot be modified, overwritten, or deleted, providing a secure and tamper-proof storage solution.

Explanation

WORM technology is commonly used in various storage systems, such as optical discs, tape storage, and specialized WORM-enabled hard drives. Here's how WORM works and its key characteristics:

  1. Immutability: WORM technology enforces strict write protection, preventing any modifications or deletions of data once it is written. This immutability ensures data integrity and preserves the authenticity and reliability of stored information.

  2. Compliance and Regulatory Requirements: WORM technology is often employed in industries with stringent compliance regulations, such as finance, healthcare, and legal sectors. It helps organizations meet regulatory requirements for data retention, ensuring that critical records and information are securely stored and cannot be tampered with.

  3. Data Archiving and Long-Term Retention: WORM storage is ideal for long-term data archiving and retention purposes. It provides a reliable and durable storage medium for preserving valuable data over extended periods, protecting against data loss, and enabling data retrieval when needed.

  4. Data Protection and Security: WORM technology enhances data protection and security by preventing unauthorized access, tampering, or deletion of stored data. It helps safeguard critical information, such as legal documents, financial records, and audit logs, from malicious or accidental alterations.

  5. Legal Admissibility: WORM storage is often recognized for its legal admissibility, as it ensures the integrity and authenticity of stored data. In legal and regulatory proceedings, WORM technology helps establish the credibility and verifiability of archived information.

Related terms

  • Compliance Storage: Refers to storage systems and technologies designed to meet regulatory compliance requirements, including WORM capabilities for data immutability and long-term retention.

  • Data Governance: The framework and processes established to manage and protect data throughout its lifecycle, including data storage, access, security, and compliance.

  • Electronic Data Archiving: The process of systematically preserving and storing electronic data for long-term retention, typically for compliance, legal, or historical purposes.

  • Data Retention Policy: A set of guidelines and rules defining how long data should be retained, based on legal, regulatory, and business requirements.

WORM technology provides a secure and compliant storage solution, ensuring data immutability and long-term retention. By utilizing WORM-enabled storage systems, organizations can protect critical information, meet regulatory obligations, and establish a trustworthy data archival environment.

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Last updated 1 year ago