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A practical sizing guide

# Buy for the workload you have.

Choose an initial configuration from evidence, then leave a measured path to grow. A realistic estimate is more useful than the largest number in a plan card.

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## IN THIS DOCUMENT

[List the processes](https://koalavps.com/choose-vps/#section-1)[Match the bottleneck](https://koalavps.com/choose-vps/#section-2)[Leave room for the data](https://koalavps.com/choose-vps/#section-3)[Measure after launch](https://koalavps.com/choose-vps/#section-4)[Knowledge base](https://koalavps.com/resources/)

## List the processes

Write down the application, database, workers and other services that must share the machine. Estimate their normal memory use and their peak activity. Leave enough free memory for the operating system and short bursts without depending on swap for routine work.

## Match the bottleneck

CPU-bound tasks need sustained compute; databases often need memory and responsive storage; media transfer depends on network capacity. A workload with one busy thread may not benefit from many additional vCPUs. Benchmark a representative task.

## Leave room for the data

Include database growth, indexes, logs, temporary files and upgrade space. Add log rotation and alerts before a disk fills. A backup stored only on the same disk consumes capacity without protecting against that disk’s loss.

## Measure after launch

Observe CPU saturation, memory pressure, storage latency, application response time and request errors. Scale when the measurements justify it. Keep the application and data portable enough to move if a vertical resize is insufficient.

KEEP EXPLORING

## Continue reading.

[Products ### Small footprint. Serious freedom. A virtual server for the things you want to own: your code, your services, your data. Choose a server configuration, pick an opera…](https://koalavps.com/vps/)[Guides ### A backup matters when it restores. Design a backup around the data you cannot recreate and the time your service can afford to lose. A successful upload is only the …](https://koalavps.com/backups/)[Guides ### Virtual server or a whole machine? Choose the allocation model that matches your resource use, operational needs and budget. Each has a useful place.…](https://koalavps.com/bare-metal-vs-vps/)

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