Jelastic Cloud Storage is a solution, which allows transforming low-cost hardware and network equipment into protected enterprise-level storage. It is optimized for storing large amounts of data and provides replication, high-availability, and self-healing features for the data.The basic element of Cloud Storage is a cluster. Jelastic Cloud Storage cluster consists of bare-metal servers, and each one can be assigned any combination of the following 3 roles:
- Metadata service (MDS), which stores metadata about chunk servers and controls how files are keeping the contents of virtual machines, how containers are split into chunks, and where these chunks are located.
- Chunk service, which stores all the data on local disks of the server (including the contents of virtual machines and containers) in the form of fixed-size chunks and provides access to them. For better I/O load balancing and to ensure fault tolerance and HA availability in case of chunk servers' failure, data replication for Cloud Storage shall be set to 3:2 or higher.
- User nodes - servers, where the VZ-based containers and virtual machines are running, and which consume the storage from Cloud Storage cluster chunk services.
For better understanding, please check the Virtuozzo Storage documentation. In case you have any questions remained, please contact Jelastic Operations team.And below, the following information regarding the Cloud Storage installation is presented: