No, offsite backup does not need to be performed simultaneously with local backup. The timing of offsite backups can vary based on your data protection strategy, recovery point objectives (RPO), and operational requirements.
Local backups are typically faster and used for quick recovery from hardware failures or accidental deletions. Offsite backups, on the other hand, protect against catastrophic events like natural disasters, fires, or theft by storing data in a remote location.
A company performs local backups every hour to ensure minimal data loss in case of a server crash. However, it schedules offsite backups once daily (e.g., at midnight) to reduce network load and costs while still safeguarding data against major incidents.
For cloud-based offsite backup solutions, Tencent Cloud's Backup and Disaster Recovery (CBR) service offers flexible scheduling options, allowing you to define custom backup frequencies and retention policies. It supports cross-region replication, ensuring data is stored securely in multiple geographic locations. Additionally, Tencent Cloud Object Storage (COS) can be used for long-term archival backups with low-cost, durable storage.
This approach balances performance, cost, and risk management without requiring real-time synchronization between local and offsite backups.