Best practices

Data tiering is ideal for workloads that access up to 20 percent of their overall dataset regularly, and for applications that can tolerate additional latency when accessing data on SSD.

When using SSD capacity available on data-tiered nodes, we recommend that value size be larger than the key size. Value size cannot be greater than 128MB; else it will not be moved to disk. When items are moved between DRAM and SSD, keys will always remain in memory and only the values are moved to the SSD tier.