What Are the Differences Between Hot Data Storage and Cold Data Storage?
The biggest difference between hot data storage and cold data storage lies in the storage media.
- Hot data is frequently queried or updated and has high requirements on access response time. It is stored on DN data disks.
- Cold data is not updated and is occasionally queried, and does not have high requirements on access response time. It is stored in OBS.
Different storage media determine the cost, performance, and application scenarios of the two storage mode, as shown in Table 1.
Storage |
Read and Write |
Cost |
Capacity |
Application Scenario |
|---|---|---|---|---|
Hot storage |
Fast |
High |
Fixed and restricted |
This mode is applicable to scenarios where the data volume is limited and needs to be frequently read and updated. |
Cold storage |
Slow |
Low |
Large and unlimited |
This mode is applicable to scenarios such as data archiving. It features low cost and large capacity. |
Cluster Management FAQs
- What Do I Do If Creating a GaussDB(DWS) Cluster Failed?
- How Can I Clear and Reclaim the Storage Space?
- Can I Switch My Cluster Nodes to Another Region After Purchase?
- Why Did the Used Storage Shrink After Scale-out?
- How Do I View Node Metrics (CPU, Memory, and Disk Usage)?
- Does GaussDB(DWS) Support a Single Node for a Learning Environment?
- Does GaussDB(DWS) Support BMS?
- How Is the Disk Space or Capacity of GaussDB(DWS) Calculated?
- What Are the gaussdb and postgres Databases of GaussDB(DWS)?
- How Do I Set the Maximum Number of Sessions When Adding an Alarm Rule on Cloud Eye?
- How Do I Determine Whether a Cluster Uses the x86 or Arm Architecture?
- What Should I Do If the Scale-out Check Fails?
- When Should I Add CNs or Scale out a cluster?
- What Are the Scenarios of Resizing a Cluster, Changing the Node Flavor, Scale-out, and Scale-in?
- How Should I Select from a Small-Flavor Many-Node Cluster and a Large-Flavor Three-Node Cluster with Same CPU Cores and Memory?
- What Are the Differences Between Cloud SSDs and Local SSDs?
- What Are the Differences Between Hot Data Storage and Cold Data Storage?
- What Do I do if the Scale-in Button Is Dimmed?
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbotmore
