HCP System Management Help
An HCP system includes multiple nodes that are networked together, where each node is either an individual server, a blade in a blade server, or a virtual machine. Each physical node can have multiple internal drives and/or can connect to SAN storage. Each virtual node emulates a server that has only internal drives.
The physical storage that’s managed by the nodes in the HCP system is called primary storage. By default, primary storage consists entirely of running storage, which is storage on continuously spinning disks. However, an HCP SAIN system can be configured to use SAN storage that includes both running storage and spindown storage, which is storage on disks that can be spun up or spun down as needed. HCP uses primary spindown storage for tiering purposes.
You can also add HCP S Series Nodes, known as economy storage, to an HCP system. S Series Nodes are highly efficient, highly available, cost-effective storage devices that support very large amounts of data. An S Series Node uses commodity hardware which ensures that the costs of growth and repair remain low. To protect data, S Series Nodes use erasure coding. S Series Nodes also use several internal processes to continuously check the integrity of the stored data and the storage media.
You can use S Series Nodes as an alternative to primary running storage or as a tiering platform. This is configurable. HCP uses the S Series HS3 API, which is compatible with Amazon® S3™, to write, retrieve, and otherwise manage objects in an S Series Node. A single HCP system can seamlessly write data across multiple S Series Nodes, thereby enabling scalability in both capacity and performance.
Additionally, for tiering purposes, HCP can use extended storage. Extended storage is storage that's managed entirely outside of the HCP system.
Each node has its own set of logical volumes. Logical volumes on storage managed by HCP are local storage volumes. Logical volumes can also be NFS volumes (also called external volumes). These are volumes that are stored on extended storage and are accessed using NFS mount points. For more information on NFS volumes, see NFS storage components.
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