What a Storage Node is

A Storage Node includes the services and processes required to store, move, verify, and retrieve object data and metadata on disk.

Storage Node overview

More information

What the LDR service is
Hosted by a Storage Node, the Local Distribution Router (LDR) service handles content transport for the StorageGRID Webscale system. Content transport encompasses many tasks including data storage, routing, and request handling. The LDR service does the majority of the StorageGRID Webscale system’s hard work by handling data transfer loads and data traffic functions.
Monitoring ILM activity
You can monitor the number of objects waiting or being queued for ILM evaluation.
What the DDS service is
Hosted by a Storage Node, the Distributed Data Store (DDS) service interfaces with the Cassandra database to manage the object metadata stored in the StorageGRID Webscale system.
What the CMS service is
The Content Management System (CMS) service manages objects to ensure that the StorageGRID Webscale system’s information lifecycle management (ILM) policy is satisfied.
What the ADC service is
The Administrative Domain Controller (ADC) service authenticates grid nodes and their connections with each other. The ADC service is hosted on each of the first three Storage Nodes at a site.

Parent topic: Managing disk storage