Which storage access tier would be most suitable for infrequently accessed data?

The most suitable storage access tier for infrequently accessed data is the Cool tier. This tier is designed specifically for storing large volumes of data that do not need to be accessed frequently but still require quick retrieval when needed. The Cool tier offers lower storage costs compared to the Hot tier, which is optimized for data that is accessed frequently. This makes it a cost-effective solution for data that is expected to be accessed less than once a month.

In addition to cost efficiency, the Cool tier provides a balance of performance and cost, enabling organizations to keep their data affordable while still being readily accessible when necessary. For example, it is often used for backup and disaster recovery scenarios, where data may only be accessed occasionally.

The Archive tier, while providing even lower storage costs, is designed for data that is rarely accessed and incurs higher retrieval costs and latency compared to the Cool tier. Therefore, it would not be as suitable for data that may require more timely access, even if infrequent. The Premium tier is tailored for high-performance scenarios where low latency and high throughput are critical, making it inappropriate for infrequent access.

Thus, the Cool tier stands out as the most appropriate choice for infrequently accessed data, as it effectively balances cost and access needs.