Tiered Storage Overview
To help users reduce storage costs, Doris provides flexible options for cold data management.
| Cold Data Options | Applicable Conditions | Features |
|---|---|---|
| Compute-Storage Separation | Users have the capability to deploy a compute-storage separation setup | - Data is stored as a single replica in object storage - Local caching accelerates hot data access - Independent scaling of storage and compute resources significantly reduces costs |
| Local Tiering | In the compute-storage integrated mode, users want to further optimize local storage resources | - Supports cooling cold data from SSD to HDD - Fully utilizes the tiered characteristics of local storage to save high-performance storage costs |
| Remote Tiering | In the compute-storage integrated mode, users want to reduce costs using affordable object storage or HDFS | - Cold data is stored as a single replica in object storage or HDFS - Hot data continues to use local storage - Cannot be combined with local tiering for the same table |
With the above options, Doris can flexibly adapt to different deployment scenarios, achieving a balance between query efficiency and storage cost.