How to Host Multiple WordPress Sites on Synology NAS

Synology

Running several WordPress websites does not always require separate hosting accounts or public cloud servers. A compatible Synology NAS can provide a private hosting environment where businesses, developers, and agencies manage multiple WordPress installations from centralized infrastructure.

Synology provides packages and web-hosting capabilities that can support web services, PHP, databases, and individual website configurations. With proper planning, each WordPress site can have its own domain, files, database, SSL certificate, and backup strategy.

However, hosting public websites introduces different security and availability requirements than simply using a NAS for internal file storage. Performance, internet connectivity, DNS, backups, updates, and network security all need careful consideration.

Why Host WordPress on a Synology NAS?

A Synology NAS can be useful for organizations that want greater control over their website infrastructure.

Potential advantages include:

Centralized website management
Dedicated storage capacity
Control over website files
Private database hosting
Flexible backup options
Development and staging environments
Reduced dependence on individual hosting accounts
Integration with existing Synology infrastructure

It can be particularly useful for development sites, internal websites, staging environments, and organizations that already maintain suitable Synology hardware.

Check Your Synology NAS Resources

Before deploying several websites, confirm that the NAS has enough resources for the expected workload.

Consider:

Processor performance
Available RAM
Storage performance
Number of websites
Expected visitors
WordPress plugins
Database activity
Backup workloads
Other NAS applications

A small NAS running file sharing, surveillance, backups, and several WordPress websites simultaneously may encounter resource limitations.

Business-critical hosting should therefore begin with realistic capacity planning.

Install Web Station

Synology Web Station provides the foundation for hosting websites on supported Synology NAS systems.

Open Package Center in DSM and install Web Station along with the required supporting components for your intended environment.

Your WordPress deployment will typically require technologies such as:

Web Station
A supported web server
PHP
MariaDB
Database administration tools where appropriate

Available packages and configuration options can vary according to the DSM version and Synology model.

Prepare a Separate Directory for Each Website

Keeping each WordPress installation in its own directory makes management considerably easier.

For example, you might organize three sites into separate folders corresponding to their domains or project names.

Each directory should contain only the WordPress installation associated with that website.

Separating installations makes it easier to manage:

Updates
Permissions
Backups
Troubleshooting
Migrations
Security incidents

Avoid placing unrelated WordPress installations into the same application directory without a clear management strategy.

Create Separate Databases

Each WordPress website should generally have its own database.

For example, three websites might use three separate databases rather than sharing one database structure.

Create a database for each WordPress installation and assign appropriate database credentials.

Using separate databases improves organization and can reduce the impact of administrative mistakes.

Database users should receive only the permissions necessary for their associated websites rather than unnecessary access across every database.

Configure Multiple Websites in Web Station

The key to hosting multiple WordPress websites is configuring Web Station so incoming requests are directed to the correct website.

Each site can be associated with its own domain or hostname and document root.

For example:

site-one.com → WordPress Site One

site-two.com → WordPress Site Two

site-three.com → WordPress Site Three

The exact terminology and workflow can vary between Web Station versions, but the objective is to create separate web service configurations for the individual websites.

This allows one Synology NAS to respond appropriately to several domains.

Configure PHP Correctly

WordPress relies heavily on PHP.

Administrators should select a PHP version compatible with the WordPress core, themes, and plugins being used.

PHP configuration may also need adjustment for settings such as:

Memory limits
Upload sizes
Execution time
Required extensions

Avoid unnecessarily increasing resource limits simply to work around poorly optimized plugins or themes.

Different sites may have different requirements, particularly when hosting older applications alongside newer WordPress installations.

Point Your Domains to the NAS

For websites that need to be publicly accessible, DNS must direct visitors toward the internet connection serving the Synology environment.

This introduces important infrastructure considerations.

Organizations need to account for:

Public IP addressing
DNS records
Router and firewall configuration
Internet availability
ISP restrictions
Network security

If the public IP address changes frequently, additional DNS planning may be necessary.

Businesses should also verify whether their internet service is appropriate for hosting public-facing services.

Configure HTTPS and SSL Certificates

Public WordPress websites should use HTTPS.

Synology DSM provides certificate management capabilities that can help administrators assign appropriate certificates to supported services.

Each public domain should have a valid certificate configured correctly.

HTTPS helps protect information traveling between the visitor and the web server, including:

Login credentials
Form submissions
Administrative sessions
Customer information

Certificate expiration should also be monitored so websites do not suddenly begin displaying browser security warnings.

Do Not Expose DSM Unnecessarily

Hosting a website publicly does not mean the DSM administration interface should also become publicly accessible.

Separate website access from NAS administration wherever practical.

Administrators should use security controls such as:

Firewall rules
Multi-factor authentication
Restricted administrative access
Strong passwords
Automatic blocking
Account protection
Secure remote administration

Only services genuinely required by the WordPress environment should be exposed.

Keep WordPress Installations Updated

Self-hosting means the organization assumes responsibility for maintaining the WordPress environment.

Regularly update:

WordPress core
Plugins
Themes
PHP
Database components
DSM
Relevant Synology packages

Unused themes and plugins should be removed rather than left installed indefinitely.

A vulnerable WordPress plugin can potentially become an entry point into the hosting environment.

Back Up Every WordPress Website

Website files and databases both need protection.

A complete recovery strategy should account for:

WordPress files
Upload directories
Themes
Plugins
Databases
Web Station configurations
Relevant system settings

Synology backup capabilities can provide additional protection for the underlying storage, but organizations should verify that the complete website can actually be restored.

Keeping another copy offsite provides protection if the entire NAS or location becomes unavailable.

Monitor Performance as Sites Grow

Multiple websites compete for the same NAS resources.

Administrators should monitor:

CPU utilization
RAM usage
Storage performance
Database load
Network bandwidth
Website response times
Available capacity

A configuration that works well for five low-traffic websites may perform poorly when one site suddenly receives substantial traffic.

Resource monitoring helps identify when the environment needs optimization or additional infrastructure.

Consider Colocation for Business-Critical Sites

An office-based NAS depends on local electricity, cooling, networking, and internet connectivity. That may be acceptable for development environments or smaller workloads, but public business websites can require greater availability.

Organizations can consider placing suitable Synology infrastructure in a professional data center where redundant power, cooling, physical security, and business-grade connectivity are available.

This approach maintains control over dedicated hardware while reducing dependence on an office server closet.

When Professional Synology Support Helps

Hosting one basic WordPress site can be relatively straightforward. Running multiple production websites introduces more complex requirements involving Web Station, PHP, MariaDB, DNS, SSL, firewall policies, backups, network security, and performance planning.

Professional Synology support can help organizations configure the environment correctly before websites become dependent on it. Host multiple WordPress sites with expert Synology consulting.

About Epis Technology

Epis Technology helps organizations design, configure, secure, and optimize Synology infrastructure for business workloads. Services include Synology consultation, Web Station configuration, storage architecture, network planning, secure remote access, backup implementation, cybersecurity assessments, performance optimization, and hosted or colocated Synology solutions. Epis Technology helps businesses build reliable Synology environments that support web applications and other critical services while maintaining secure, scalable storage and recovery infrastructure.