Backups

Backups refer to the process of creating copies of data or system configurations to restore them in case of data loss, corruption, or hardware failures. They’re a critical component of any IT disaster recovery plan.

Types of Backups:

  1. Full Backup: Every single file and folder in the system is backed up.
  2. Incremental Backup: Only the changes made since the last backup (be it full or incremental) are saved.
  3. Differential Backup: Backs up all the changes made since the last full backup.
  4. Mirror Backup: An exact copy of the source data. If a file is deleted from the source, it’s also deleted from the mirror backup.
  5. Snapshot Backup: A state-in-time copy of the system, useful for quick rollbacks.

Mediums:

  • TapeTraditional method, reliable but slower recovery times.
  • DiskFaster than tape, allows for quicker recoveries.
  • NetworkData is backed up to a remote location or cloud.
  • Optical StorageCDs, DVDs, etc. Not as popular for large-scale backups.

Strategies:

  • 3-2-1 Rule: Keep 3 copies of your data, store 2 backups on different media or platforms, and 1 backup offsite.
  • Versioning: Maintaining multiple versions of documents or files to roll back to a specific point in time.

Cloud Backups:

  • Offer scalability, off-site storage, and can be automated.
  • Examples include services like Google Drive, Dropbox, Amazon S3, and specialized services like Backblaze and Carbonite.

Best Practices:

  • Schedule regular backups: Daily, weekly, or whatever fits the organization’s needs.
  • Ensure backups are encrypted to protect data during transit and at rest.
  • Regularly test backups to ensure data can be restored.
  • Maintain a log of all backup activities.

In essence, backups play a pivotal role in data protection and recovery strategies, ensuring that organizations can restore operations with minimal downtime and data loss.

Key terms in plain language

Open a term for a concise explanation of language used on this page.

Disaster Recovery (DRaaS)

A plan and service for restoring applications, data, and operations after an outage or disruption. DRaaS provides recovery infrastructure through a managed cloud service.

Cloud Computing

Computing resources—such as applications, servers, storage, or databases—delivered from remote infrastructure and scaled as requirements change.

Infrastructure as a Service (IaaS)

Cloud-based servers, storage, and networking that customers configure and manage without owning the underlying data-center hardware.

Software as a Service (SaaS)

Software accessed as an online service instead of being installed and maintained entirely on the customer’s own computers or servers.

Identity and Access Management (IAM)

The systems and policies that determine who a user is, what resources they may access, and how that access is authenticated and reviewed.

API

An application programming interface is a defined way for software systems to exchange data or request functions from one another.