Cluster Volume
Cluster volumes provide the basic storage space of the cluster configuration. Before you start storing any data on the cluster, you need to create at least one cluster volume.
To create a cluster volume:
- Go to CMS > Cluster Volume.
- Click Create.
- Enter a name and choose a volume types:
- Distributed: Files are distributed across storage servers, providing the best performance and maximizing available cluster storage space. This type does not provide fault tolerance.
- 1-replica: A replica of every file is created on another storage server. This type provides a balance of data redundancy and performance.
- 2-replica: Two replicas of every file are created on two other storage servers. This type provides the best data redundancy and fault tolerance.
- Choose a RAID type for each storage unit. Available types include RAID 1, RAID 5, and RAID 6.
- Follow the instructions of the wizard to finish.
Managing Cluster Volumes
You can also maintain existing cluster volumes. The following procedures are available:
- Expand the capacity of a cluster volume by adding hard drives to storage servers.
- Expand the capacity of a cluster volume by adding a storage server.
- Replace an existing storage server with a new one.
Note:
- If the cluster volume is 1-replica or 2-replica, the volume size increases only after all of the storage servers are replaced with servers with higher capacity.
- The hardware requires to successfully expand a cluster volume differ according to the environment.
To manage a volume:
- Select a cluster volume.
- Click Manage.
- Follow the wizard to complete one of the procedures described above.