Distributed Storage can be configured as a Disk Library using a Commvault MediaAgent.
To setup the disk library you must setup the storage servers and the Commvault MediaAgent which will also act as a Distributed Storage Proxy to move the data to the storage servers.

Terminology
This documentation uses the following terminology.
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 Storage Servers  | 
 Consists of the storage servers (or nodes) which together will act as a repository for the data.  | 
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 Storage Proxy  | 
 Storage proxy along with Commvault MediaAgent moves the data between the client and the storage servers.  | 
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 Deployment Server  | 
 Deployment server is used to deploy the software on storage servers and the proxies.  | 
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 Protection Policy  | 
 Determines the method of storing the data. Protection Policy can be one of the following: Replication is the simplest form of data protection, which replicates and maintains one or more additional copies of the original objects. Erasure Coding is a data protection method which duplicates blocks of data across storage media. Erasure coding adds redundancy to the system and tolerates failures without data loss.  |