A county document-management database on Amazon EC2 needs sustained IOPS and throughput for peak scanning days without overpaying for idle capacity overnight. Which block-storage design best meets performance and cost goals?
Select an answer to reveal the explanation.
Short Explanation
Think of EBS like choosing the right truck for scanning day—match volume type and provisioned IOPS/throughput to real metrics, not folklore. Oversizing io2 forever or parking an OLTP DB on cold HDD or S3 object GETs is how budgets and SLAs both get hurt.
Full Explanation
Amazon EBS gp3 lets you provision IOPS and throughput independently of size; io2 fits latency-sensitive high-IOPS databases when gp3 ceilings are insufficient. Architects should size from CloudWatch volume metrics and growth plans rather than defaulting to maximum Provisioned IOPS. Instance store is ephemeral and unsuitable as sole durable store for municipal documents; sc1 targets cold sequential workloads, not transactional document DBs; S3 is object storage, not a block device for classic RDBMS data files.