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Minimum Configuration

The minimum hardware configuration for deploying a Parallels Cloud Storage cluster is given below:

Server Role

Number of Servers

Metadata Server

1 (can be shared with chunk servers and clients)

Chunk Server

1 (can be shared with metadata servers and clients)

Client

1 (can be shared with chunk and metadata servers)

Total number of servers

with role sharing: 1
without role sharing: 3

Graphically, the minimum configuration can be represented as follows:

Parallels Cloud Storage Minimum Configuration

For a Parallels Cloud Storage cluster to function, it must have at least one MDS server, one chunk server, and one client. The minimum configuration has two main limitations:

  1. The cluster has one metadata server, which presents a single point of failure. If the metadata server fails, the entire Parallels Cloud Storage cluster will become non-operational.
  2. The cluster has one chunk server that can store only one chunk replica. If the chunk server fails, the cluster will suspend all operations with chunks until a new chunk server is added to the cluster.
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