Last winter, the backup needs for my home media archive and some side projects I developed (like financial calculators, and the backend for my Android spam app) reached a critical point. External USB drives were no longer sufficient, and synchronization and data integrity issues began to surface. It was at this exact moment that the question of whether to buy a ready-made NAS solution like Synology or build my own NAS with an open-source platform like TrueNAS started to bother me. Let's thoroughly examine the pros and cons of both approaches to see if making this decision is still sensible in 2026.
Why Did I Feel the Need to Build My Own NAS? Data Management Nightmares
For someone like me, deeply involved with technology and constantly developing new projects, one of the biggest problems is managing the ever-growing volume of data. While at work I manage corporate ERP systems, massive databases, and logs, at home I encountered a similar data chaos. Initially, I managed with a few terabytes of external drives, but this solution had serious limitations in terms of security, accessibility, and management.
For example, in 2024, I discovered that 4 TB of my media archive (mostly photos and videos I took myself) on one of my drives had suddenly corrupted. Backups were on a different external drive, but since it wasn't regularly synchronized, I had lost the last few months of data. This incident once again highlighted how critical data integrity and automatic backups are. Additionally, I needed a central place to store database backups, configuration files, and even virtual machines for my personal website, blog, and other side projects (like the financial calculators I built for my own site). Cloud storage services (Dropbox, Google Drive, etc.) worked up to a point, but for data volumes exceeding 10 TB, monthly costs started to climb above $100, which was not a sustainable solution in the long run. These experiences pushed me towards a more robust and controllable storage solution.
โ ๏ธ Risk of Data Loss
While external drives may seem practical, the risk of data loss is high. Drops, power outages, or software errors can easily destroy your data. Without regular and automatic backup mechanisms, it's inevitable that you'll regret it one day.
Synology: What Are the Advantages of a User-Friendly Solution?
Synology is one of the leading brands in the ready-made NAS solutions market. Its biggest advantage is its user-friendly operating system, DiskStation Manager (DSM). DSM offers an icon-filled interface, accessible via a web browser, similar to Windows or macOS. This makes setup and management incredibly easy for users with limited technical knowledge.
When I set up a Synology DS920+ at a friend's office, creating a RAID 5 array, setting up users and shares, and even installing a Plex media server took about 30 minutes. We handled everything entirely through the graphical interface, without needing any command-line knowledge. Adding extra features with applications offered in Synology's "Package Center" (Plex, Docker, VPN Server, Cloud Station, etc.) is also extremely simple. Thanks to the QuickConnect feature, you don't have to deal with complex network settings like port forwarding for external access; a secure tunnel is created through Synology's own servers. However, this convenience comes at a cost: Synology devices can often be 30% to 50% more expensive than DIY systems with similar hardware specifications. Furthermore, hardware upgrade options are limited, and the software is entirely tied to the Synology ecosystem, which implies a kind of vendor lock-in. For example, if I want to install a RAID card or an extra network card, I'm limited to the restricted options Synology provides. This makes me think, especially when customization and performance optimization are important to me.
TrueNAS (Scale/Core): The Appeal and Challenges of Open Source Power
TrueNAS is an open-source, professional-grade storage operating system. It is based on the ZFS file system, which is one of the best solutions in the industry for data integrity and durability. TrueNAS comes in two main versions:
- TrueNAS CORE: Based on FreeBSD, its stability has been proven over many years.
- TrueNAS SCALE: Based on Linux and offers Docker containers and Kubernetes (K3s) integration. This is very attractive, especially for developers like me.
My main reason for leaning towards TrueNAS SCALE was the potential to run my own microservices and containerized applications directly on the NAS with K3s integration. ZFS's data integrity features significantly reduced my fear of data loss. Features like checksums, snapshots, and self-healing ensure my data is protected against silent data corruption (bit rot). When creating a ZFS pool in my TrueNAS SCALE setup, it took me some time to learn that I should define disks using /dev/disk/by-id/ paths instead of /dev/sdX. Otherwise, there was a risk of the pool not mounting if disk paths changed after a system reboot. Such details are nuances you won't encounter with Synology, but you'll need to learn them in the depths of TrueNAS.
# Incorrect usage: Disk paths may change
# zpool create mypool raidz1 /dev/sdb /dev/sdc /dev/sdd
# Correct usage: Defining disks with persistent IDs
# First, let's find the disk IDs
ls -l /dev/disk/by-id/
# Example output:
# lrwxrwxrwx 1 root root 9 Jun 24 10:00 ata-WDC_WD40EFAX-68JH4N0_ABCD123 -> ../../sdb
# lrwxrwxrwx 1 root root 9 Jun 24 10:00 ata-WDC_WD40EFAX-68JH4N0_EFGH456 -> ../../sdc
# lrwxrwxrwx 1 root root 9 Jun 24 10:00 ata-WDC_WD40EFAX-68JH4N0_IJKL789 -> ../../sdd
# Create ZFS pool with persistent IDs
zpool create mypool raidz1 \
/dev/disk/by-id/ata-WDC_WD40EFAX-68JH4N0_ABCD123 \
/dev/disk/by-id/ata-WDC_WD40EFAX-68JH4N0_EFGH456 \
/dev/disk/by-id/ata-WDC_WD40EFAX-68JH4N0_IJKL789
However, this flexibility and power come with a learning curve. You need to have more knowledge about hardware compatibility, RAID levels (vdevs in ZFS), network configuration, and even operating system settings. During the initial setup, basic mistakes like forgetting to enable AHCI mode in BIOS settings or not providing enough RAM (ZFS typically recommends a minimum of 8GB, and 1GB per TB of storage) can lead to performance issues or instability. Therefore, TrueNAS is a more "DIY" solution compared to Synology and requires more technical expertise.
โน๏ธ ZFS RAM Requirements
TrueNAS and ZFS generally recommend plenty of RAM for proper operation. ZFS's use of RAM for its ARC (Adaptive Replacement Cache) directly affects performance. Start with a minimum of 8GB RAM, but adding 1GB of RAM for every terabyte of storage is ideal. My system uses 32GB of RAM for 48TB of storage.
Hardware Selection and Cost Analysis: A Real Comparison
One of the most critical decisions when setting up a NAS is hardware selection. In ready-made solutions like Synology, hardware is part of the package. For example, a 4-bay Synology DS923+ (diskless) is around 700-800 USD as of 2026. This price includes the processor (AMD Ryzen R1600), 4GB RAM, and Gigabit Ethernet ports.
When I decided to build my own TrueNAS system, I used an old desktop computer case I already had. I was able to fit 6 disk bays inside. My component choices were as follows:
- Motherboard: GIGABYTE B450M DS3H (I had it, AM4 socket) - 0 USD
- Processor: AMD Ryzen 3 3200G (I had it, integrated GPU was sufficient) - 0 USD
- RAM: 2x16GB DDR4 3200MHz (32GB total) - 120 USD (new purchase)
- HBA Card: LSI SAS 9211-8i (flashed to IT Mode) - 80 USD (second-hand)
- PSU: Seasonic Focus GM-550 (550W) - 80 USD (new purchase)
- Boot Drive: 2x 120GB SATA SSD (mirrored) - 50 USD (second-hand)
- Data Drives: 4x 12TB Seagate IronWolf NAS HDD - 800 USD (200 USD each)
- Case: My existing ATX case - 0 USD
My total cost (excluding drives) was approximately 330 USD. With 4x 12TB drives, I built a much more powerful TrueNAS system with 48TB gross capacity for 1130 USD. If you added 4x 12TB drives to a Synology DS923+, the total cost, including disk expenses, would be around 1500-1600 USD. So, with TrueNAS, I got a higher-performance and more flexible system for about 25-30% less.
Electricity consumption is also an important factor. A Synology DS923+ with 4 drives consumes about 35-40W under load, while my TrueNAS system with a Ryzen processor and HBA card consumes around 60-70W under load. This could result in an annual electricity cost difference of approximately 50-70 USD in Turkey, based on 2026 prices. However, the flexibility and performance I gained made this extra cost worthwhile.
๐ก HBA Card Importance
In ZFS-based systems like TrueNAS, it is crucial to connect disks directly to an HBA (Host Bus Adapter) card. RAID cards typically use their own caches and software, which limits ZFS's control over the disks and can compromise data integrity features. HBA cards are flashed in "IT Mode" (Initiator-Target) to present disks directly to the operating system.
Management and Maintenance: Who Causes Fewer Headaches?
Setting up a NAS system is one thing; managing and maintaining it long-term is another. In this regard, Synology's DSM is truly designed to minimize headaches.
When you experience a disk failure on Synology, a visual alert immediately appears in the DSM interface. You even receive instant notifications via email or mobile app. Pulling out the disk tray and inserting a new disk usually takes a few seconds. DSM automatically detects the new disk and initiates the RAID array rebuilding process. This entire process is extremely simple, even for a home user with no technical knowledge, let alone a system administrator like me.
With TrueNAS, the situation is a bit different. Yes, TrueNAS's web interface is also quite advanced and offers many monitoring tools. You can monitor S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) data and check the status of ZFS pools. However, in the event of a disk failure, the operations you can perform from the interface might not be as "one-click" as with Synology. For example, after identifying the faulty disk, you would confirm the status with the zpool status command, and then initiate the disk replacement with commands like zpool replace mypool <old_disk_id> <new_disk_id>.
# Check faulty disk status
zpool status mypool
# Example output:
# pool: mypool
# state: DEGRADED
# status: One or more devices has experienced an error resulting in data corruption.
# Applications may be affected.
# action: Restore the file(s) from backup if possible.
# The device errors were unrecoverable and have been permanently
# removed from the pool.
# Attempt to replace the device with a new one.
# see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-AR
# config:
#
# NAME STATE READ WRITE CKSUM
# mypool DEGRADED 0 0 0
# raidz1-0 DEGRADED 0 0 0
# ata-WDC_WD40EFAX-68JH4N0_ABCD123 ONLINE 0 0 0
# ata-WDC_WD40EFAX-68JH4N0_EFGH456 FAULTED 100K 0 0 (unrecoverable error)
# ata-WDC_WD40EFAX-68JH4N0_IJKL789 ONLINE 0 0 0
#
# errors: No known data errors
# After inserting the new disk (e.g., appearing as /dev/sde)
# First, find the ID of the new disk
ls -l /dev/disk/by-id/ | grep sde
# Example: lrwxrwxrwx 1 root root 9 Jun 24 10:00 ata-WDC_WD40EFAX-68JH4N0_MNOP012 -> ../../sde
# Replace the faulty disk with the new disk
zpool replace mypool \
ata-WDC_WD40EFAX-68JH4N0_EFGH456 \
ata-WDC_WD40EFAX-68JH4N0_MNOP012
# Monitor the replacement process
zpool status -v mypool
This CLI (Command Line Interface) usage requires more technical knowledge and attention compared to Synology's GUI. Updates are similar. While Synology offers one-click updates, TrueNAS SCALE updates can often mean a larger version jump and may require a system administrator like me to check patches and investigate potential incompatibilities. I previously experienced CI/CD reliability issues in a production ERP, learning that automatic updates can sometimes lead to unpredictable results. That's why I prefer to manually check and apply updates in TrueNAS.
Which Solution Makes More Sense for Whom in 2026?
As of 2026, both ready-made solutions and DIY systems have found their niches in the NAS market. When making a decision, several key factors need to be considered:
-
Technical Knowledge and Time:
- Synology: If your technical knowledge is limited, you prefer to avoid the command line, and your time is restricted, Synology is ideal for you. It's quick to set up, simple to manage, and an excellent solution for those who just want it to "work."
- TrueNAS: If you have basic knowledge of Linux, network configuration, and general system administration, and you're eager to learn and troubleshoot, TrueNAS offers you much more flexibility and power. It's perfect for people like me who are constantly experimenting with new things and hosting different services on their own servers.
-
Cost and Budget:
- Synology: Initial cost is usually higher. However, you take less risk regarding hardware compatibility, warranty, and technical support.
- TrueNAS: By carefully selecting hardware components, you can build a much more powerful system at a lower cost. Especially if you have the opportunity to repurpose old computer parts, the cost advantage grows even larger. However, you need to invest time and effort in choosing the right hardware and resolving compatibility issues. In my case, with the budget I allocated for hardware, I was able to get a much superior setup than a Synology.
-
Flexibility and Customization:
- Synology: While it offers a rich set of applications within its own ecosystem, it is limited in terms of hardware and software customization. Running third-party applications can sometimes be challenging.
- TrueNAS: Especially with TrueNAS SCALE's Docker and K3s integration, you can run almost any service you want on the NAS. Using containers on TrueNAS to host the backend of my custom financial calculators or the logs of my Android spam blocker app provides me with great flexibility. You can tailor the system to your needs by adding different network cards, more powerful processors, or more RAM.
-
Data Integrity and Security:
- Both solutions offer RAID and data backup features. However, ZFS, which TrueNAS is based on, is unrivaled in terms of data integrity (checksumming, copy-on-write, self-healing) and snapshot capabilities. This is one of the biggest attractions for someone like me who values data highly. Thanks to ZFS's replication features, backing up instant snapshots to another TrueNAS device or the cloud is much easier and more reliable.
โน๏ธ ZFS Snapshots and Replication
ZFS snapshots are instant images of the file system at a specific point in time and occupy almost no disk space. With these snapshots, you can easily restore accidentally deleted or corrupted files. The replication feature allows you to quickly and efficiently transfer these snapshots to another ZFS pool (another TrueNAS server or the cloud). This is an invaluable feature for disaster recovery scenarios.
Conclusion: My Preference and Recommendation
As of 2026, for someone like me with experience in system architecture, software development, and operations, who isn't afraid to delve into technical details, TrueNAS SCALE was by far the more sensible choice. I built a much more powerful, flexible, and controllable system at a lower cost. Especially ZFS's unique capabilities in data integrity and the flexibility offered by TrueNAS SCALE's container orchestration (K3s) make it perfect for hosting my side projects and home lab endeavors. I previously experienced a similar trade-off during a VPS migration process; instead of choosing the ease of ready-made cloud services, I opted for more control by manually setting up everything on my own VPS. This situation is one of the fundamental approaches that shape my preferences.
However, not everyone may have a technical background like mine or the time to dedicate to this. If you are a home user looking to simply back up your data, make your media files accessible, and want a "plug-and-play" solution, Synology is still an excellent option. Its user interface, application ecosystem, and simple management processes make Synology indispensable for those who don't want to grapple with technical details.
In short, if you're looking for a solution for your data storage needs, first assess your technical proficiency, the time you can allocate, and your budget. If you have a DIY spirit and are open to learning, TrueNAS will provide you with much more value in the long run. Otherwise, the seamless experience offered by Synology might be worth the extra money you spend.
Top comments (1)
Excellent write-up! โค๏ธ I really liked that you didn't present this as a simple "Synology vs DIY" debate, but focused on the real trade-offsโcost, flexibility, maintenance, and long-term ownership. TrueNAS is incredibly powerful for people who enjoy learning and want complete control, while Synology still makes sense for users who prioritize simplicity and reliability. In the end, the best NAS is the one that matches your needs, not just the specs. Thanks for sharing such a balanced perspectiveโit will definitely help many people make a more informed decision.