What does a DST policy contain


The DST policy contains a schedule and a file placement policy.

The schedule determines when a DST policy is carried out. The file placement policy determines a file migration condition.

Other related questions:
What does a tiered storage policy contain?
The tiered storage policy consists of tiered storage timetable and tiered storage migration. The former one determines when a migration policy is performed; the latter one determines under what conditions a file is migrated.

What modules does Flume contain?
Flume Agent consists of Source, Channel, and Sink. A Source receives data or generates data through a special mechanism, and sends the data to one or more Channels in batches. There are two types of Sources, namely, data-driven and polling. A Channel is located between a Source and a Sink and used to cache the received data. After the Sink successfully sends the data to the next-hop Channel or the final destination, the data is removed from this Channel. A Sink is responsible for sending data to the next hop or final destination and removing the data from the Channel after sending the data.

What modules does Kafka contain?
The Huawei Kafka service consists of Brokers.

What data does Streaming contain?
Nimbus contains the metadata of Streaming. Supervisor contains the computing data of Streaming.

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