Week 8: Backup and Recovery Strategies

Data backup and recovery strategies

are critical components of information management in any organization. They ensure that data is protected against loss due to hardware failures, accidental deletions, cyberattacks, or natural disasters.

backup and recovery plan

A well-structured — helps organizations maintain business continuity and minimize downtime.

Data loss

— can occur due to various reasons, including hardware failures, software corruption, human error, or malicious attacks.

Regular backups

are essential to safeguard against these risks.

Data Backup

Example: A company that relies on customer databases must have a backup strategy to prevent data loss in case of a server crash.

• Full Backup

• Incremental Backup

Types of Backups:

Full backups

A complete copy of all data at a specific point in time. — are comprehensive but can be time-consuming and require significant storage space.

Full backups

Example: A company performs a full backup of its entire server every Sunday, ensuring that all data is captured and stored securely

Incremental backups

Only the data that has changed since the last backup (either full or incremental) is backed up. — are faster and require less storage space but may complicate the recovery process.

Incremental backups

Example: After a full backup on Sunday, the company performs incremental backups every night, capturing only the changes made since the last backup.

• On-site Storage

• Off-site Storage

Backup Storage Solutions

Backups can be stored in various locations, including:

On-site Storage

Local storage devices such as external hard drives or network-attached storage (NAS) devices.

Off-site Storage

Remote locations or cloud storage solutions that provide additional protection against local disasters.

• Recovery Time Objective (RTO)

• Recovery Point Objective (RPO)

Recovery Procedures (Recovery Plan)

Recovery Time Objective (RTO)

The maximum acceptable time to restore data after a failure.

Recovery Point Objective (RPO)

The maximum acceptable amount of data loss measured in time

RTO, RPO

Example: A company may set an — of 4 hours and an — of 1 hour, meaning they aim to restore data within 4 hours and can tolerate losing up to 1 hour of data