Choose VPS if
- Traffic varies and you want to grow tier by tier.
- The application fits comfortably under 32 vCPU and 192 GB RAM.
- You want a quick snapshot before every risky update.
- You run several small environments: test, staging and production.
DevOps comparison · Hosting
VPS or dedicated server: when does the switch pay off?
A KVM VPS gives you reserved resources on a physical host shared with other customers. A dedicated server gives you the whole machine: CPU, memory, disks and network card. These are the criteria that decide when to switch: steady performance, isolation, storage, compliance, delivery time and scaling.
Short answer
- A VPS suits a growing website, shop or SaaS with variable load, while large databases, steady heavy traffic and sensitive data suit a dedicated server, since it shares its hardware with nobody.
- A 4hosting VPS scales up to 32 vCPU, 192 GB RAM and 1 TB NVMe, with snapshots and step-by-step upgrades.
- 4hosting dedicated servers start at 6 cores and go up to 48 cores on an AMD EPYC 9454P with 256 GB DDR5 ECC.
- Move to a dedicated server once you have hit the ceiling of a large VPS or an audit asks for physical isolation of the data.
- 4hosting VPS, top tier
- 32 vCPU, 192 GB RAM, 1 TB NVMe
- 4hosting dedicated, top tier
- AMD EPYC 9454P, 48 cores, 256 GB DDR5 ECC
- 99.99 % SLA
- dedicated servers only
- Included DevOps hours per month
- VPS 1–8 h, dedicated 5–10 h
Side-by-side comparison
| Criterion | VPS | Dedicated server |
|---|---|---|
| Hardware | Reserved resources on a shared host | A whole physical server, yours alone |
| Maximum 4hosting capacity | 32 vCPU, 192 GB RAM | 48 cores, 256 GB RAM |
| Peak performance | Can vary because of neighbours | Constant, no neighbours |
| Isolation | KVM virtualisation, own kernel | Complete physical isolation |
| Storage and IOPS | Virtualised NVMe, reserved volume | Dedicated NVMe, disks in pairs |
| Scaling | Up, to a larger tier | Hardware upgrade or migration |
| Snapshots | Included | No hypervisor snapshots, classic backup |
| Delivery time | Fast, a virtual instance | Longer, installed on hardware |
| SLA | No 99.99 % SLA | 99.99 % SLA |
| Included DevOps hours | 1–8 h per month | 5–10 h per month |
When to choose each option
Choose Dedicated server if
- The database does heavy writes and needs steady IOPS.
- Traffic is high and constant, and you have already outgrown a large VPS.
- An audit or a customer contract demands physical isolation of the data.
- You want a 99.99 % SLA and control over the RAID layout.
Noisy neighbours: what they are and when they matter
A VPS reserves CPU, memory and disk for you, yet the physical host underneath is shared. KVM, the virtualisation layer built into the Linux kernel, gives each VPS its own kernel and its own memory. What stays common is the processor cache, the memory bus and the disk I/O queue. When another tenant runs a heavy job, your response times can spread out during peaks. A typical website or API will hardly show it. A database handling thousands of writes per second will. On a dedicated server the question disappears, because no other workload runs on that machine.
Storage, IOPS and RAID
All 4hosting dedicated servers use NVMe disks in pairs. The SD Intel 32/256 plan, with a 32-core Xeon 6731P, has four 3.84 TB disks, and you pick the RAID level when the server is installed: RAID 1 on two disks or RAID 10 on four. A VPS gets a virtualised NVMe volume reserved for it. You feel the difference under many small random writes, which is how transactional databases and message queues behave. A dedicated server hands you the full disk bandwidth, while a VPS volume is plenty for most web workloads.
Compliance and sensitive data
If you handle patient, payroll or payment data, an auditor will ask where it is stored and who else can reach the hardware. Both 4hosting options run in an EU data centre in Frankfurt, covered by a data processing agreement based on Article 28 GDPR. A dedicated server goes one step further with physical isolation: no other customer shares your disks. A well-configured VPS satisfies many audits. When your own policy or a large customer's contract names dedicated hardware outright, you already have your answer.
Examples from Romania
Online shop in Cluj-Napoca with seasonal traffic
A shop that peaks on Black Friday and idles in summer begins on a 4 vCPU VPS and moves up a tier before each campaign. It takes a snapshot ahead of every platform update, which gives a fast rollback when an update misbehaves.
B2B SaaS in Iasi with a growing database
A B2B SaaS grows a PostgreSQL database to several hundred GB, with writes all day. On a large VPS the query times turn uneven at peak hours. Putting the database on a dedicated server with NVMe in RAID 1 evens them out, and the application stays on the VPS.
Clinic group in Bucharest facing an audit
A clinic group keeps patient records, and an auditor asks that the data be physically isolated. The group takes a dedicated server in an EU data centre, picks the RAID layout at install, limits root access to its own team and signs a data processing agreement based on Article 28 GDPR.
Common mistakes
- Blaming the server when the slow part is the code, then upgrading before looking at the queries.
- Treating one vCPU as one physical core instead of benchmarking your own workload.
- Overlooking that a dedicated server has no hypervisor snapshots, so backups need their own plan.
- Running the database and the application on one small VPS until the first traffic peak.
How 4hosting helps
- Start on a KVM VPS with NVMe and scale up to 32 vCPU and 192 GB RAM without changing provider.
- Dedicated servers come with unmetered traffic, root access and a 99.99 % SLA.
- Included DevOps hours: 1–8 h a month on VPS, 5–10 h on dedicated servers, depending on plan. You request them from the client panel; they do not carry over, and extra hours are accepted and billed separately.
- The move from VPS to dedicated, and the tuning afterwards, can come out of those hours, and migration from another provider is free.
- Data centre in Frankfurt, a 10 Gbps symmetric network, L3/L4 DDoS protection included, and support in English and Romanian.
Related questions
Can I move from a VPS to a dedicated server without reinstalling the application?
Yes, if the application runs in Docker containers or its configuration is described as code. The move then comes down to starting the same containers on new hardware and switching DNS. Without containers, migration means copying data and reconfiguring services, work the 4hosting team can do from the included DevOps hours.
How many vCPUs equal one physical core?
There is no fixed ratio. A vCPU usually maps to one hardware thread of the host, not to a whole core. The only valid test is your own workload: run the application on both options and compare response times at peak load.
Sources
Ask for an infrastructure recommendation
Start on a VPS while load varies and you grow in steps; move to a dedicated server when you need the whole machine, steady IOPS and physical isolation.