“Storage” is not one thing. Object, block, and file storage are three different models, each built for different jobs. Pick the wrong one and you will fight your infrastructure; pick the right one and a lot of problems simply disappear. Here is how they differ and when to use each.
Block Storage
Block storage presents raw volumes to a server, which the operating system formats with a filesystem — just like a physical disk. It is the storage your VPS or dedicated server boots from and where your databases live.
- Best for: operating systems, databases, and any application that needs low-latency, random read/write access.
- Strengths: high performance, low latency, behaves like a local disk.
- Limitations: typically attaches to one server at a time, and capacity is provisioned in fixed volumes.
If you are running MySQL, PostgreSQL, or a boot volume, you want block storage. NVMe and SSD-backed block storage is what gives databases their speed.
File Storage
File storage exposes a shared filesystem over a network (using protocols like NFS or SMB). Multiple servers can mount the same share and see the same files and folders simultaneously.
- Best for: shared application data, home directories, content that several servers need to read and write together.
- Strengths: familiar folder hierarchy, concurrent access from many clients.
- Limitations: network protocol overhead, and performance can become a bottleneck at very large scale.
File storage is the natural fit when a fleet of web servers needs a common set of files, such as shared uploads behind a load balancer.
Object Storage
Object storage keeps data as discrete objects in a flat namespace (buckets), each with a unique key and metadata, accessed over HTTP APIs — most commonly the S3-compatible API. There is no traditional filesystem and no folder tree underneath; the “folders” you see are just key prefixes.
- Best for: backups, media files, static website assets, logs, and large volumes of unstructured data.
- Strengths: scales essentially without limit, durable, cost-effective for large data, accessible from anywhere over HTTP.
- Limitations: higher latency than block storage, not suitable for running a database or as a boot disk, and you interact with it via API rather than mounting it like a disk.
If you are storing user uploads, nightly backups, or serving static assets, object storage is usually the right and cheapest answer.
A Quick Way to Choose
- Booting a server or running a database? Block storage.
- Several servers need to share the same files live? File storage.
- Storing lots of backups, media, or static assets accessed over HTTP? Object storage.
Many real systems use all three: a database on block storage, shared assets on file storage, and backups plus media on object storage.
Cost Patterns
Roughly speaking, block storage costs the most per gigabyte (you are paying for performance), file storage sits in the middle, and object storage is the cheapest for bulk capacity. Object storage may also bill for API requests and data transfer, so read the pricing for your access pattern, not just the per-GB rate.
How Noded Can Help
We offer high-performance NVMe block storage for servers and databases, and S3-compatible object storage for backups, media, and static assets. If you are not sure which model fits a particular workload — or you are overpaying by keeping bulk data on fast block storage — tell us about your data and access patterns and we will help you put each piece where it belongs.
FAQ
Can I run a database on object storage?
Not directly — object storage has higher latency and is accessed over an HTTP API, which does not suit a database’s random read/write needs. Run databases on block storage and use object storage for their backups.
What is S3-compatible storage?
Object storage that implements the same API as Amazon S3, so tools and applications built for S3 work with it unchanged. It has become the de facto standard for object storage.
What is the difference between file and object storage?
File storage gives you a shared, mountable filesystem with folders, accessed via protocols like NFS or SMB. Object storage stores items in a flat namespace accessed over HTTP, scaling far larger but without a traditional filesystem.
Which is fastest?
Block storage, especially NVMe-backed, offers the lowest latency and is the choice for performance-sensitive workloads. File and object storage trade some performance for sharing and scale respectively.