Provide a local workspace with many small random reads and writes.
Prioritize low latency without mechanical head movement.
Which medium is generally most suitable?
An SSD has no mechanical seek and generally provides lower random-I/O latency than an HDD. Endurance, capacity, and interface also matter.
Detailed explanation
Correct. Flash storage avoids mechanical seek and is suited to low-latency random I/O.
Incorrect. Rotational media and head movement increase random-access latency.
Incorrect. Optical media suits distribution and archival rather than frequent random writes.
Incorrect. Tape is designed for sequential backup access.
Try it yourself
An example you can run in a temporary verification environment.
printf '%s
' 'SSD: no mechanical seek' 'HDD: rotating media and head seek'Expected result
SSDとHDDのアクセス機構の違いKey points
- SSD has no mechanical seek
- HDD uses rotating media
- Consider endurance and cost
Notes
- Environment: 概念確認。性能値は製品と接続方式に依存
- Prefer read-only inspection or a disposable system when testing hardware commands.
- Device visibility and module behavior depend on the host and virtualization environment.
Foundation review
Place the operation
Media choice depends on latency as well as endurance, capacity, and cost.
Check the side effect
Measure the target workload rather than assuming every SSD has identical performance.