Automated storage tiering (ATS) is one of most discussed storage array topics in the past year. It refers to the ability of the storage array to move chunks of data between different disk types and RAID levels to meet the right balance between performance and space usage, and avoiding so-called hot-spots. The pioneer in this …
You left out another metric:
Application workload type. Some vendors have exceptions in their arrays for not applying automated storage tiering to specific workload or application types, such as highly chatty databases, or long sequential writes/reads. Other architectures have no restrictions to workloads. The latter will present less burden and provide greater ease around planning and management.
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