A rack server is a server built in a standard 19-inch chassis measured in rack units, designed for dense mounting in data…
RAID combines several disks into one logical volume using striping, mirroring or parity to improve server storage speed, capacity or fault tolerance.
Redundancy in server reliability means duplicating critical components so that a single failure does not interrupt the service or lose data.
Requests per second (RPS) measures how many requests a server completes each second, a core server performance metric read together with latency…
Resource saturation is the state in which a server resource has more work than it can process, so requests queue and latency…
Response time is the elapsed time between a client sending a request and receiving the server's complete answer, including queuing, processing and…
A restoration test restores a backup to a separate environment and verifies the result, proving that server data can actually be recovered…
RPO, the recovery point objective, is the maximum amount of recent data, measured in time, that a server system may lose after…
RTO, the recovery time objective, is the maximum acceptable time a server or service may stay down after a disruption before it…