Complete NAS Setup for Under $600 (2025)

Six hundred dollars sits in the awkward middle of the NAS market. It is comfortably more than a single-bay enclosure with one drive, and comfortably less than a four-bay x86 unit loaded with enough storage to justify the chassis. The entire job of this guide is deciding what that $600 should buy — and, just as importantly, what it should not.

Below is a complete, working setup: a two-bay Synology DS223j, two 4TB CMR NAS drives running in a mirrored array, a UPS that lets the NAS shut itself down safely during a power cut, a short Ethernet cable, and a portable USB drive for an off-device backup. It totals $572.94 before tax, leaving roughly $27 of headroom for shipping and sales tax. Every part was chosen to work with the others — the UPS signals the NAS over USB, the drives are CMR and NAS-rated, and the backup drive plugs straight into the enclosure's USB port.

Be clear about what this buys you. It will automatically pull photos off your family's phones, serve files to every computer in the house over SMB, stream video to devices that can already play the file's original format, and run a scheduled backup every night without you thinking about it. It will not transcode 4K HEVC for a phone on cellular data, run Docker containers or virtual machines, host a dozen simultaneous users, or give you more than about 3.6TB of protected space. Those are $800–$1,500 features, and no amount of coupon hunting changes that arithmetic.

Before you open anything, pick the location. The NAS needs a spot with open airflow near your router, ideally not inside a closed cabinet — two spinning drives in an enclosed space will run warmer than they need to, and heat is one of the few things that genuinely shortens drive life. You need two outlets: one for the NAS power brick and one for the UPS. If your router is on the floor, put the NAS on a shelf above it rather than beside it, and keep the UPS on the floor where spilled liquid is less likely to reach it.

Hardware assembly takes about ten minutes. Slide the front panel off the DS223j, pull out both drive trays, and mount each 3.5-inch IronWolf by pressing it into the tray rails — no screws needed for 3.5-inch drives. Slide the trays back in until they click, replace the front panel, and connect the power brick and the Ethernet cable to your router. Do not connect the USB backup drive yet. Power on and wait two to three minutes for the status light to settle.

Next, open a browser on a computer on the same network and go to find.synology.com. The wizard will locate the NAS, let you install DSM, and prompt you to create an administrator account. Use a long, unique password and enable two-factor authentication when it offers — this account controls everything. Once you are in, open Storage Manager, create a storage pool with both drives using SHR (Synology Hybrid RAID), and choose Btrfs as the filesystem so you get snapshots and data scrubbing. Btrfs cannot be changed later without wiping the array, so decide now. The initial pool build takes roughly 20–40 minutes depending on drive size; you can use the NAS while it runs, but performance will be reduced.

After the pool is built, create your shared folders, add user accounts for each household member, and install Synology Photos and Hyper Backup from Package Center. Then plug the UPS USB cable into the NAS, open Control Panel > Hardware & Power > UPS, and confirm DSM detects the device and has auto-shutdown enabled — test this by unplugging the UPS from the wall briefly and watching DSM report the battery event. Finally, connect the WD Elements drive, create a Hyper Backup task pointing at it, schedule it for 3 a.m. daily, and run it once manually so you know a restore point exists. Total time from unboxing to a working, protected NAS is roughly 90 minutes, most of it waiting.

Budget Tips

• Buy the drives during seasonal sales events and set a price alert — 4TB IronWolf drives regularly swing $10–$20, which is real money at this budget level.
• If cash is tight right now, start with the enclosure and one 4TB drive for about $310 total and add the second drive when you can. SHR expands onto a second disk without a rebuild, though you have no redundancy until it arrives.
• Do not buy a network switch until you have confirmed your router has no free LAN port. Most home routers have four, and the DS223j only needs one.
• Skip Cat6a and shielded cable. Cat5e handles gigabit over home distances for about $5, and the NAS's port cannot go faster than 1GbE regardless.
• Reuse an external USB drive you already own for the first backup instead of buying the WD Elements. It is the single easiest $85 to save without weakening the build.
• Skip the extended warranty on the enclosure. The failure risk sits with the drives, and both IronWolf units already include three years of Rescue data-recovery coverage.
• Check the used market for the enclosure specifically — a clean used two-bay Synology can save $60–$100 — but only if DSM still receives security updates for that model and the drive trays and power brick are included.
• Do not buy 2TB drives to save money. Per usable terabyte they usually cost more than 4TB, and you will be replacing them within a year.

Common Mistakes

• Buying desktop or SMR drives to save $20 per disk. On a two-bay array, an SMR drive that drops out during a rebuild can take the whole pool with it. This is the one place in the build where the cheap option is genuinely dangerous.
• Spending the budget on a four-bay enclosure and leaving nothing for drives. A NAS with no drives does nothing. Drives are 37% of this build for a reason — capacity and reliability come first, bays come later.
• Treating RAID as a backup. SHR and RAID 1 protect you from one drive failing. They do not protect you from deleting a folder by accident, ransomware encrypting your shares, or a fire. Without the off-device copy, mirrored data is still a single point of failure.
• Skipping the UPS to save $60, then losing power during the initial pool build or a rebuild. Power-loss corruption during a write is one of the few failures that a mirror cannot recover from.
• Assuming the RAM can be upgraded later. The DS223j's 1GB is soldered to the board. If upgradeable memory matters for your workload, you need a different enclosure, not a future purchase.
• Hiding the NAS in a closed cabinet or media console for aesthetic reasons. Restricted airflow raises drive temperatures, and sustained heat is one of the few factors that measurably shortens drive lifespan.

Upgrade Roadmap

The first upgrade is capacity, and it is the one you will feel soonest. When the 3.6TB array starts filling — likely 18 to 30 months in if you are backing up phone photos and some video — replace the two 4TB drives with 2 x 8TB IronWolf drives at roughly $179 each. In a two-bay Synology you can either migrate the drives one at a time (slow but keeps the array online) or back up to the USB drive, rebuild from scratch with the new pair, and restore. Budget about $360 for the pair and an evening of your time.

The second upgrade is the platform, and it is the one that unlocks new capabilities rather than more space. Moving to a Synology DS224+ ($299.99) or a UGREEN DXP2800 ($349.99 and frequently discounted) gets you an Intel x86 CPU, upgradeable RAM, NVMe cache slots, and 2.5GbE networking. That is what enables Plex hardware transcoding for 4K, Docker containers, virtual machines, and multiple simultaneous heavy users. Your existing drives move across without reformatting, so the effective cost is the enclosure minus whatever you sell the DS223j for. Prioritize this only after you have actually outgrown the DS223j — buying x86 before you have a use for it is the most common way budget NAS builders waste $300.

The third upgrade is the network layer, and it only makes sense after the second. To see 2.5GbE speeds you need a 2.5GbE switch and a 2.5GbE adapter on your computer — roughly $100–$150 combined — and gigabit Ethernet on a single client will still cap you at about 110 MB/s no matter what the NAS supports. Upgrade the UPS last. A $150–$190 unit with an LCD and pure sine-wave output is a genuine improvement, but the $60 unit already does the job that matters: a clean shutdown. Spend the next dollar on drives instead.