Help Center> GeminiDB> GeminiDB Influx API> Working with GeminiDB Influx API> Cold and Hot Data Separation> Enabling Cold Storage
Updated on 2023-11-21 GMT+08:00
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Enabling Cold Storage

Cold storage is mainly used to store historical data with low query frequency. As the amount of historical data increases, the need to reduce storage costs becomes necessary. GeminiDB Influx provides cold storage to help you store cold data at low costs in just a few clicks.

In addition, GeminiDB Influx can separate cold data from hot data based on the retention policy. If you need to separate cold data from hot data, create cold storage and set the time boundary between hot and cold data. In this way, hot data will be automatically archived in cold storage after the retention period expires.

Both new and existing instances support cold storage. This section describes how to create cold storage.

Precautions

  • Cold storage can be created for existing instances whose kernel version is 1.7.4.6 or later. If the kernel version is earlier than 1.7.4.6, contact customer service to upgrade the kernel version first.
  • GeminiDB Influx does not back up cold storage data.
  • Cold storage cannot be disabled after being enabled.

Creating Cold Storage for a New Instance

You can specify Purchase Cold Storage on the page for purchasing an instance. For details, see Buying a Cluster Instance.

Creating Cold Storage for an Existing Instance

If you select No for Purchase Cold Storage on the page for purchasing an instance. To create cold storage, you can perform the following steps:

  1. Log in to the management console.
  2. In the service list, choose Databases > GeminiDB.
  3. On the Instances page, locate the instance that you want to create cold storage for and click its name.
  4. In the Cold Storage area on the Basic Information page, click Create.

    Figure 1 Creating cold storage

  5. On the displayed page, specify the amount of cold storage and click Next.

    Figure 2 Specifying cold storage

    The cold storage is an integer from 500 GB to 100,000 GB. You can add a minimum of 1 GB each time you scale up storage space.

  6. On the displayed page, confirm the cold storage space.

    • For yearly/monthly instances
      • If you need to modify your settings, click Previous.
      • If you do not need to modify your settings, click Next and complete the payment.
    • For pay-per-use instances
      • If you need to modify your settings, click Previous.
      • If you do not need to modify the settings, click Submit.

  7. Check the cold storage creation result.

    • When the cold storage is being created, the instance status is Creating cold storage.
    • After the cold storage is created, the instance status becomes Available.
    • Click the instance name. In the Cold Storage area on the Basic Information page, you can view the cold storage capacity after the cold storage is created.