Deployment
Deploy and upgrade DolphinDB on premise or in the cloud
Database
Design and configure DolphinDB databases
Streaming
Publish, subscribe to, and process streaming data
Migration
Import and migrate data from various data sources to DolphinDB databases
Maintenance
Database maintenance and system management
Programming Guide
DolphinDB scripting language and SQL reference
Function References
Reference for all built-in functions
API & Connector
API in different languages for users to call DolphinDB from their programs
Plugins
Guidance on the use of plugins and plugin development for multiple application scenarios
Tutorials
Tutorials on database concepts and application scenarios
Release Notes
Release notes and compatibility changes for DolphinDB server, plugins and APIs

moveHotDataToColdVolume

Syntax

moveHotDataToColdVolume([checkRange=240])

Arguments

checkRange is an integer indicating the time range (in hours). The default value is 240, i.e., 10 days. If the parameter is specified, data within the range of [current time-hoursToColdVolumes-checkRange, current time-hoursToColdVolumes) will be migrated to coldVolumes.

Details

Migrate the specified data to coldVolumes.

The migration policy of moveHotDataToColdVolume is different from setRetentionPolicy. See Tiered Storage for more information.