Choosing a network-attached storage enclosure is a balancing act between price, drive capacity, and condition. In the storage NAS networking category, you have two Synology DS423 4-bay units-one used, one new and sealed-and two NETGEAR ReadyNAS units with 2 and 6 bays. The price spread runs from $71 to $374.99, so the right pick depends on how many drives you expect to install and how much you want to spend.
Quick Take
The used Synology DS423 gives you a functional 4-bay enclosure for $350, but you accept cosmetic wear and a no-return policy. The new sealed DS423 costs $374.99 and delivers the same 4-bay layout without the used-condition worries. On the NETGEAR side, the ReadyNAS 202 is the cheapest way in at $71, while the ReadyNAS RND-6A offers the most drive bays-six-for $129.99.
Price Comparison at a Glance
| Product | Condition | Bays | Price | Price Bar |
|---|---|---|---|---|
| Synology DS423 4-Bay Network Attached Storage Enclosure | Used | 4 | USD 350.00 | |
| Synology DS423 4-Bay Network Attached Storage Enclosure, NEW, SEALED, DISOUNTED | New | 4 | USD 374.99 | |
| NETGEAR ReadyNAS 202 RN202 2-Bay Network Attached Storage NAS RN20200-100NES | Used | 2 | USD 71.00 | |
| NETGEAR ReadyNAS RND-6A RNDU6000-100NAS 6-Bay Network Attached Storage | Used | 6 | USD 129.99 |
Decision Matrix
| If you need... | Choose... | Because... |
|---|---|---|
| Lowest price | NETGEAR ReadyNAS 202 | $71 entry point with 2 bays |
| Most drive bays | NETGEAR ReadyNAS RND-6A | 6 bays for $129.99 |
| Sealed 4-bay Synology | New DS423 | New condition, full specs |
| 4-bay Synology for less | Used DS423 | $24.99 cheaper, but used |
Product Notes
Synology DS423 4-Bay Network Attached Storage Enclosure (Used)
Need four bays without paying new prices? The used Synology DS423 keeps the same 4-bay layout that makes expansion easy, while coming in at $350. It supports HDDs and connects to a PC through Ethernet, so it slots into a typical home network. The trade-off is condition: expect small scratches or marks, and no drives are included. All sales are final, and shipping is limited to the US lower 48 states with no international orders. If you can live with used wear and a no-return policy, this is the most affordable entry into a Synology 4-bay enclosure.
Synology DS423 4-Bay Network Attached Storage Enclosure, NEW, SEALED, DISOUNTED
If you want the same DS423 in untouched condition, this new sealed unit costs $374.99. It supports 2.5 and 3.5-inch drives and uses Ethernet for PC connections, and its feature list includes a Realtek quad-core processor, 2GB of DDR4 RAM, two Gigabit Ethernet ports, and two USB-A 3.0 ports-plenty for a small-office NAS. The premium over the used unit is $24.99, and like the used version, it is diskless, so you still need to buy drives. The sealed packaging means no visible wear, but you are paying extra for that condition.
NETGEAR ReadyNAS 202 RN202 2-Bay Network Attached Storage NAS RN20200-100NES
$71 is the lowest price in this comparison, and the ReadyNAS 202 still gives you two hot-swappable bays, a 1.4 GHz dual-core ARM processor, 2GB of RAM, Gigabit Ethernet, and USB 3.0-a capable starter NAS for a home office. As a working pull, this used unit may show signs of service, and accessories that aren't pictured are not included. It also caps at two bays, so you won't have the expansion room of the 4-bay or 6-bay options. If you need just a small storage footprint, it's a smart budget pick.
NETGEAR ReadyNAS RND-6A RNDU6000-100NAS 6-Bay Network Attached Storage
The ReadyNAS RND-6A offers the most storage potential in this roundup with six drive bays, and it does so for a notable $129.99. It connects through RJ-45 Ethernet and USB-A, and it has been tested and is working. This is a used enclosure with scratches and scrapes around the body, and it does not include cables, hard drives, or a power adapter-only what's pictured. The 6-bay capacity is ideal for a larger array, but the cosmetic condition means you'll want to hide it on a shelf.
Final Recommendation
Bottom line: For a sealed 4-bay Synology, go with the new DS423. For the same 4-bay capacity at a lower cost, buy the used DS423 and accept the no-return policy. For the smallest investment, the ReadyNAS 202 at $71 is a legitimate two-bay NAS. For maximum drive slots, the ReadyNAS RND-6A at $129.99 is the only six-bay enclosure in this group. In the storage NAS networking category, the right pick comes down to how many bays you need and whether you'll accept used condition.
