Config for tiered storage.
A valid config must have a valid TieredStorageRule. Otherwise
the whole TieredStorageConfig must be unset.
By default all data is stored in the SSD tier (only SSD
instances can configure tiered storage).
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-05-07 UTC."],[],[]]