Managed Service for Elasticsearch allows you to use network and local storage for clusters. Network storage is based on network blocks, which are virtual disks in the Yandex.Cloud infrastructure. Local storage is organized on disks, which are physically located on the cluster servers.
When creating a cluster, you can choose between the following storage types:
- Standard network storage (
network-hdd): The cheapest option for servers with relaxed read/write performance requirements.
- Fast network storage (
network-ssd): A middle-ground solution. It's slower than local storage, but unlike local disks, it ensures data integrity if Yandex.Cloud hardware goes down.
- Fast local storage (
local-ssd): The fastest disks. The size of local storage can only be incremented by 100 GB.
Local storage features
- Local storage doesn't provide fault tolerance for a single-host cluster: if a local disk fails, the data is permanently lost. To ensure fault tolerance, create clusters of two or more hosts and configure index sharding and replication.
- You are charged for a cluster with local storage even if it's stopped. Read more in the pricing policy.