Choosing the wrong configuration is more expensive than choosing the wrong brand. Many customers buy high-end specs simply because they don’t know what they need, or conversely, find that their initial purchase cannot handle the workload, forcing them to buy another server. This page provides a complete checklist for selection and delivery.
This page serves as a specialized guide for Host Maintenance during the procurement and rack-mounting phases.
How to Determine Configuration
| Business Type | Recommended Starting Configuration | Description |
|---|---|---|
| Corporate Website / Showcase Site | 2 vCPUs, 4GB RAM (2 vCPUs, 2GB RAM may suffice) | The bottleneck is usually bandwidth, not CPU. If there are many images, prioritize increasing bandwidth. |
| WordPress Corporate Site | Starting at 2 vCPUs, 4GB RAM | Memory becomes tighter than CPU when using numerous plugins. |
| Small E-commerce / Membership System | Starting at 4 vCPUs, 8GB RAM | The main constraints are the number of PHP processes and database connections. |
| Medium-Scale API Service | Starting at 8 vCPUs, 16GB RAM, estimated by QPS | Determine based on load testing results; do not guess. |
| Database Server | RAM ≥ Data Size × 1.5 | The buffer pool must accommodate hot data; this is the most critical constraint. |
| Large File / Video Storage | Purchase data disks by capacity; note IOPS specifications | The price difference between HDDs and SSDs often makes upgrading IOPS specifications more cost-effective than expanding capacity. |
Balancing CPU, Memory, Disk, and Bandwidth
Identify the Bottleneck First
Insufficient memory triggers swap usage, manifesting as “slow response but idle CPU.” Poor disk performance shows as “low load but slow requests.” Identify the specific issue before adding resources; otherwise, you may add resources in the wrong direction.
Prioritize IOPS for Disks
The value of SSDs lies not just in capacity. On databases and high-concurrency sites, insufficient IOPS causes overall slowdowns. Upgrading disk size or IOPS specifications is often more effective than adding CPUs.
Bandwidth is Often Underestimated
A 5Mbps connection has a theoretical peak of about 640KB/s; a single 500KB image consumes most of it. For corporate websites and image-heavy sites, starting with 10Mbps is more stable.
Leave Headroom
Memory and disk usage will continue to grow after launch. Leaving a 30% buffer when configuring is more convenient than fully utilizing resources initially and migrating later.
Delivery Process
- Requirement Confirmation
Purpose, estimated concurrency, data volume and growth, backup and disaster recovery needs, and data center location.
- Configuration Recommendation
Provide recommended configurations with reasons, clarifying which options are optional and which cannot be skipped.
- Ordering and Arrival Coordination
Confirm the configuration list before ordering. Upon arrival, assist with machine inspection: serial number verification, bad sector and SMART detection, memory stress testing, and RAID status confirmation.
- Rack Mounting and OS Installation
Coordinate with the data center for rack mounting, configure out-of-band management (IPMI / iDRAC / iLO), install the OS, partition disks, configure LVM, and set up networking.
- Environment Setup
Install runtime environments, databases, caches, and control panels according to purpose; configure firewalls, account permissions, and security baselines.
- Monitoring, Backup, and Documentation
Integrate monitoring alerts (including hardware SMART); configure backups and perform an actual recovery test; deliver asset and account lists.
Frequently Asked Questions
Can you directly recommend a configuration?
Yes, but we first need to know the purpose and scale. The configuration for a corporate website and a membership system can differ by three times even if both are “running a website.” With sufficient information, we will provide direct conclusions with reasons; otherwise, we will ask clarifying questions first.
What does machine inspection typically involve?
Consistency of serial numbers with orders; hard drive SMART status and bad sector scanning; memory stress testing; RAID array status and consistency; checking for CPU throttling or anomalies; and verifying network port throughput against actual speeds. This is the most effective step to determine if a new machine has issues.
Why is buying expensive hardware not recommended?
Because most scenarios do not require it. Insufficient configuration leads to performance issues, while excessive configuration is simply waste — money that could have been spent on more effective backups or monitoring. We provide recommendations based on actual load, not profit margins.