Hetzner Cloud Volumes

What Hetzner Cloud Volumes is

Hetzner Cloud Volumes is SSD-based, network-attached block storage for expanding the storage capacity of Hetzner Cloud Servers. A volume can hold 10 GB to 10 TB, and you can enlarge it in 1 GB increments. It cannot be shrunk. Hetzner describes the service for data-intensive workloads, databases, and log storage. Each data block is stored on three physical servers in Hetzner data centers. You can mount a volume manually or automatically; automatic setup offers EXT4 and XFS filesystems. After increasing a volume’s size, you must extend its filesystem yourself in the server’s operating system. Documented performance reaches 5,000 sustained read/write IOPS and 200 MB/s, with bursts up to 7,500 IOPS and 300 MB/s. A volume can attach to one Cloud Server at a time, and volumes are not available for dedicated servers. Hetzner does not provide volume backups or snapshots, and server backups and snapshots exclude attached volumes. You can manage volumes and other cloud resources through Hetzner’s Cloud API, using project-bound tokens with read-only or read-and-write permissions. Hetzner is headquartered in Gunzenhausen, Germany, and was founded in 1997.

Who it suits

Hetzner Cloud Volumes suits people running databases, data-intensive workloads, or log storage on Hetzner Cloud Servers who need additional SSD capacity. It is also relevant to teams that manage cloud resources through Hetzner’s API.

Limits

Volumes range from 10 GB to 10 TB and are limited to 16 per Cloud Server. A volume attaches to one server at a time, cannot be shrunk, and has no Hetzner-provided backups or snapshots. The listed price is billed hourly with a monthly price cap, but no amount is stated.

Getting started

1. Open the Hetzner Cloud Volumes product page.
2. Use Hetzner Cloud with a Cloud Server; volumes are designed for that platform.
3. Create a volume between 10 GB and 10 TB.
4. Choose automatic mounting with EXT4 or XFS, or mount it manually.
5. If you enlarge the volume, extend its filesystem in the operating system.

Verdict

Choose Hetzner Cloud Volumes if you need expandable SSD block storage for a Hetzner Cloud Server, with documented redundancy and API management. Look elsewhere if you need volume snapshots or backups, simultaneous writable access from multiple servers, or storage for a dedicated server.