What is Cloud VPS? How is it different from traditional VPS?

Traditional VPS runs on a single physical server. If that server encounters an issue, the VPS also stops functioning. Cloud VPS solves this exact problem by distributing resources across multiple servers simultaneously.

Below is how Cloud VPS works, how it differs from regular VPS, and when you truly need to use Cloud VPS.

What is Cloud VPS?

Cloud VPS is a virtual server running on cloud infrastructure, meaning resources (CPU, RAM, disk) are distributed from a cluster of multiple physical servers instead of a single machine.

When one server in the cluster encounters hardware failure, the VPS automatically switches to another server without interruption. This is called high availability (HA). Disk data is also stored distributedly (usually replica 3 copies) so no data is lost when a hard drive fails.

Simply put: Regular VPS is like renting one room in a building, if the building collapses then the room is lost too. Cloud VPS is like having a backup room in another building, switching immediately when needed.

How it works

Cloud VPS is based on virtualization platforms (usually KVM or VMware) combined with distributed storage systems (Ceph, ZFS cluster…). Main components:

• Compute nodes: Multiple physical servers running in parallel, sharing load
• Distributed storage: Data is replicated across multiple disks on multiple servers
• Network layer: High-speed connectivity (usually 10Gbps+) between nodes
• Orchestrator: Management software that automatically distributes resources and handles failover

When a compute node dies, the orchestrator detects it and restarts the VPS on another node. Failover time is usually under 60 seconds.

Cloud VPS vs Traditional VPS

These two types of VPS differ in their underlying architecture, leading to differences in performance, pricing and operations.

Criteria	Traditional VPS	Cloud VPS
Infrastructure	1 physical server	Multiple server cluster
Uptime	Depends on 1 machine (99.5-99.9%)	HA, auto failover (99.95-99.99%)
Resource scaling	Must migrate, has downtime	Scale up/down quickly, little to no downtime
Storage	Local SSD/NVMe on 1 server	Distributed storage, multiple replicas
Price	Lower for same specs	20-50% higher
I/O Performance	Fast (reading local disk)	Depends on infrastructure, may be slower than local NVMe
Disaster recovery	Must wait for hardware repair or restore backup	Auto switch node, quick recovery
Migration	Requires downtime	Live migration, no interruption

One point many people overlook: I/O performance. Traditional VPS reads/writes directly from local NVMe drives so speed is very high. Cloud VPS uses network storage so latency is higher, though throughput is still good. For applications needing high IOPS (heavy databases), this point is worth considering.

Cloud VPS Advantages

High uptime, no single point of failure Physical server failure doesn affect VPS. Data is already replicated so no loss even if hard drives die. Suitable for services that need to run continuously 24/7.

Flexible scaling Need more RAM or CPU? Increase immediately through management panel without migrating to another server. Some providers allow hourly scaling up/down.

Live migration When providers do hardware maintenance, VPS is moved to another node without shutdown. With regular VPS, you must accept downtime.

Fast backup and snapshots Distributed storage allows creating snapshots almost instantly because it only needs to write metadata, not copy all data.

Cloud VPS Disadvantages

Higher price Same specs 2 vCPU, 4GB RAM, Cloud VPS usually costs 20-50% more than regular VPS. HA infrastructure costs (multiple servers, 10Gbps network, distributed storage) are reflected in pricing.

I/O may be lower than local NVMe VPS Network storage has higher latency than reading directly from NVMe drives mounted on server. If applications need very high random IOPS (heavy MySQL, Elasticsearch), local NVMe VPS sometimes performs better.

More complex configuration at some providers Cloud VPS usually comes with many options: network, firewall, floating IP, load balancer… New users may find it confusing compared to regular VPS where you just SSH in and it works.

When to use Cloud VPS?

Cloud VPS is suitable when:

• Website/app needs high uptime, doesn accept downtime due to hardware failure
• You need to scale resources frequently (uneven traffic, sales seasons, events)
• Running important production services: e-commerce, SaaS, API serving many clients
• Need live migration during maintenance, don want to notify customers of downtime

Traditional VPS is still suitable when:

Traditional VPS is still suitable when:

• Limited budget, need maximum resources per dollar
• Applications need high I/O, prioritize local disk speed
• Dev/test projects, staging, personal blogs, applications that accept a few minutes downtime
• You want simple setup, SSH in and run

Is Cloud VPS always better than regular VPS?

Not necessarily. “Better” depends on actual needs.

If you run a personal blog or small website, regular VPS with SSD and NVMe VPS at 99,000 VND/month is enough. A few minutes downtime per year doesn affect anything.

If you run e-commerce with 10,000 orders/month, every minute of downtime loses real money, then Cloud VPS is worth the investment.

For most cases, basic VPS is still the foundation. Cloud VPS is an upgrade step when you truly need HA and fast scaling capability.

Real cost comparison

Many people think Cloud VPS is always expensive, but actually the price gap is narrowing. For example, same specs 2 vCPU, 2GB RAM:

• Traditional VPS (SSD): around 150,000-250,000 VND/month
• Cloud VPS (NVMe distributed): around 200,000-400,000 VND/month

Difference of 50,000-150,000 VND/month. In return, you get HA, auto failover, no data loss when hardware fails. For production services, this cost is reasonable.

Another point: Cloud VPS usually charges hourly or daily at many major providers. You only pay when using, turn off VPS and compute fees stop. Traditional VPS usually charges fixed monthly rates.

Cloud VPS services at AZDIGI

AZDIGI provides both traditional VPS and Cloud Server:

• Pro VPS from 99,000 VND/month: Good-priced SSD VPS, suitable for blogs, dev/test, small projects
• AMD Cloud Server from 99,000 VND/month: Cloud VPS AMD EPYC, distributed NVMe replica 3, auto failover, 10Gbps network
• Platinum Cloud Server from 99,000 VND/month: Cloud VPS Intel Xeon Platinum, HA infrastructure, distributed NVMe

Both AMD Cloud and Platinum Cloud have HA architecture with distributed storage and auto recovery when nodes encounter issues. If you need cheap VPS to get started, Pro VPS is the most economical choice.

Learn more about cloud hosting if you want a managed solution without self-managing servers. If choosing between operating systems, read VPS Windows or Linux.

Frequently Asked Questions

Is Cloud VPS expensive?

Cloud VPS costs more than traditional VPS with same specs, usually 20-50% higher. However, some providers like AZDIGI have Cloud Server packages from 99,000 VND/month, equivalent to regular VPS pricing elsewhere. The extra cost provides high uptime and automatic recovery capability.

What technical skills does Cloud VPS require?

Basically, using Cloud VPS is like regular VPS: SSH in, install OS, configure server. HA and failover are handled by the provider. You don need to know how Ceph or live migration works to use Cloud VPS.

When do you need Cloud VPS instead of regular VPS?

When applications need uptime above 99.9%, don accept downtime from hardware failure, or need quick resource scaling without migration. If you accept a few minutes downtime per year and have budget constraints, regular VPS is still fine.