SAP on AWS · SAP HANA on AWS

In a typical HANA EC2 storage layout, why is /backup placed on st1 (throughput-optimized HDD) while /hana/data and /hana/log sit on gp3 or io2 Block Express?

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More in SAP HANA on AWS

An architect provisions slow st1 HDD for /hana/data on a production HANA node, reasoning that HANA runs in memory so disk speed is irrelevant. Why is this wrong?

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