Object storage
Storage service levels: Availability and durability
Storage service levels are usually written as two numbers with a lot of nines in them: one for availability and one for durability. They look similar and are ...
Topic
Object storage
Object storage key rotation: How encryption keys change
Encryption policies usually say keys must be rotated on a schedule, and storage teams usually discover what that means only when the first rotation is due. In ...
Object storage
Erasure coding layouts: Capacity and resilience
Erasure coding is usually described with two numbers, such as 8+3 or 12+4, and compared on a single property: how much raw capacity it consumes for each unit ...
Object storage
Object storage hardware refresh: Replacing aging nodes
Servers bought five years ago still hold data, still appear in warranty renewals, and are still the nodes most likely to fail next. Replacing them is not ...
Object storage
S3 error codes: Diagnosing application failures
An application fails against object storage and the ticket says the upload did not work. The response that caused it carried an HTTP status, an S3 error code, ...
Object storage
Object storage expansion: What happens as nodes join?
Adding capacity to a running object storage cluster is documented as a short procedure and experienced by operators as a multi-week condition. The nodes join, ...
Object storage
S3 load balancing: Designing for endpoint failures
An S3 endpoint is a single hostname standing in front of a set of nodes that fail individually. Most deployments put a load balancer in that position, point a ...
Object storage
Object storage monitoring: Metrics that reveal trouble
A dashboard showing green capacity bars, an average latency figure and an uptime percentage can sit alongside an application team reporting intermittent ...
Object storage
S3 access policies: Designing least-privilege access
Most on-premises S3 deployments start with one access key per application and a policy granting full access to a bucket, because that is what gets the first ...
Object storage
Object storage integrity: How to verify migrated data
A migration completes, the copy tool reports no errors, and the source is scheduled for decommissioning. That report describes what the tool attempted and what ...