From Redis

String: without column name, such as <span class="uicontrol" id="dataartsstudio_01_0056__en-us_topic_0108275313_uicontrol1537531006165254"> value1,value2
Hash: with column name, such as <span class="uicontrol" id="dataartsstudio_01_0056__en-us_topic_0108275313_uicontrol695539828165321"> column1=value1,column2=value2

Because DCS restricts the commands for obtaining keys, it cannot serve as the migration source but can be the migration destination. The Redis service of the third-party cloud cannot serve as the migration source. However, the Redis set up in the on-premises data center or on the ECS can be the migration source and destination.

When data is exported from an on-premises Redis, configure source job parameters as described in Table 1.

**Table 1** Parameter description
Parameter	Description	Example Value
Redis Key Prefix	Key prefix, which is similar to the table name of a relational database	TABLE
Value Storage Type	The options are as follows: String: without column name, such as value1,value2 Hash: with column name, such as column1=value1,column2=value2	String
Key Delimiter	Character used to separate table names and column names of a relational database	_
Value Delimiter	Character used to separate columns when the storage type is string	;
Same Field	This parameter is displayed when Value Storage Type is set to Hash. The hash key contains the same field.	Yes