Backups
Object storage in disaster recovery: design the copy and the way back
Object storage is often used as the off-server destination in a disaster-recovery plan. The bucket is only one component of recovery; the plan also needs credentials, encryption keys, application metadata, infrastructure configuration and an ordered restore procedure. The recovery design should also say how operators reach the storage service when the primary DNS, network or credential source is unavailable.
Define the disaster you are protecting against
A failed VM disk, accidental deletion, ransomware, datacentre outage and provider-account compromise are different failure scenarios. A copy in the same account may protect against one and not another.
List the failure domains before deciding how independent the object-storage copy must be.
Capture consistent recovery artifacts
Servers and databases should use application-aware backups or controlled snapshots before sending data to object storage. Copying changing files asynchronously can create a dataset that never existed at one point in time.
Keep manifests or catalogues needed to assemble a recovery point, especially when one backup spans many objects.
Protect the recovery credentials
Store the endpoint, bucket and credential recovery procedure somewhere operators can reach if the primary environment is unavailable. Keep secrets protected and maintain a rotation path.
Client-side encryption keys need separate recovery protection; losing them can turn a healthy bucket into unusable ciphertext.
Write the restore order
Infrastructure, identity, databases, application files and object references may have dependencies. A runbook should say what must exist before the next component can be restored.
For a web application, restoring object bytes without the database rows that reference those keys may not restore user-visible content.
Run a partial and a full drill
Frequent small restores verify routine access and integrity. Periodic larger drills reveal missing documentation, rate limits, transfer bottlenecks and hidden dependencies.
Measure recovery time against the business recovery objective. Object-storage throughput alone does not prove the target can be met.