Elasticsearch disk types
Warning
Yandex Managed Service for Elasticsearch is unavailable as of April 11, 2024.
You can create an OpenSearch cluster in Yandex Cloud as an alternative to Elasticsearch.
Managed Service for Elasticsearch allows you to use network and local storage drives for database clusters. Network drives are based on network blocks, which are virtual disks in the Yandex Cloud infrastructure. Local disks are physically located on the cluster servers.
When creating a cluster, you can select the following disk types for data storage:
-
Network HDDs (
network-hdd): Most cost-effective option for clusters that do not require high read/write performance. -
Network SSDs (
network-ssd): Balanced solution. Such disks are slower than local SSD storage, but, unlike local disks, they ensure data integrity if Yandex Cloud hardware fails. -
Non-replicated SSDs (
network-ssd-nonreplicated): Network SSDs with enhanced performance achieved by eliminating redundancy.The storage size can only be increased in 93 GB increments.
-
Local SSDs (
local-ssd): Disks with the best performance.The size of such a storage can be increased:
- For Intel Cascade Lake: Only in 100 GB increments.
- For Intel Ice Lake: In 368 GB increments only.
For clusters with hosts residing in the
ru-central1-davailability zone, local SSD storage is not available if using Intel Cascade Lake.
Selecting disk type when creating a cluster
The number of hosts with the Data node role that can be created along with an Elasticsearch cluster depends on the selected disk type:
-
With local SSDs (
local-ssd) or non-replicated SSDs (network-ssd-nonreplicated), you can create a cluster with three or more hosts.This cluster will be fault-tolerant. To ensure fault tolerance, you can also set up index sharding and replication.
Local SSD storage has an effect on how much a cluster will cost: you pay for it even if it is stopped. For more information, see Pricing policy.
-
With network HDD (
network-hdd) or network SSD (network-ssd) storage, you can add any number of hosts within the current quota.
For more information about limits on the number of hosts per cluster, see Quotas and limits.