Choosing NAS storage & drives often comes down to a deceptively simple trade-off: is a used enclosure worth accepting cosmetic wear when a new, sealed version costs more? Because both candidates are the Synology DS423, the meaningful choice is condition and price rather than a different NAS platform. Both are four-bay enclosures, so the decision is mainly about how comfortable you are with the condition of the unit.
Quick verdict
Choose Synology DS423 Used Enclosure if the lower listed price and tolerance for possible scratches matter most. Choose Synology DS423 New Sealed Enclosure if unopened condition is worth paying more. The model is the same in both cases, so this is a condition-focused head-to-head rather than a comparison of two different NAS designs.
At a glance
| Product | Listed price | Condition | Drive package |
|---|---|---|---|
| Synology DS423 Used Enclosure | USD 350.00 | Used | No drives included |
| Synology DS423 New Sealed Enclosure | USD 374.99 | New, sealed | Diskless |
Where each product wins
Synology DS423 Used Enclosure wins on price tolerance. It is the better match for a shopper who wants the lower-priced unit and can accept possible scratches. Its fully functional condition is a positive point, while the used status sets the clear boundary for the purchase.
Synology DS423 New Sealed Enclosure wins on condition. The unopened state is the clearest differentiator in this comparison. Its configuration also calls out 2GB of DDR4 RAM, two Gigabit Ethernet ports, and two USB-A 3 connections for shoppers who want those attributes specified before building a NAS.
Product notes
Synology DS423 Used Enclosure
The Synology DS423 Used Enclosure is the practical route for shoppers focused on a lower enclosure price. Its condition is described as fully functional, and the unit is identified as a black DS423 enclosure compatible with a PC and HDD storage. The limitation is cosmetic: small imperfections such as scratches are explicitly possible. It is a four-bay format for a multi-drive NAS plan. Choose it when cosmetic wear is acceptable and a lower-priced route matters more than unopened condition. It is a weaker fit when "new" and "sealed" are requirements rather than preferences.
Synology DS423 New Sealed Enclosure
Synology DS423 New Sealed Enclosure is the cleaner fit when unopened condition is the main filter. Its configuration calls out 2GB of DDR4 RAM, two Gigabit Ethernet ports, and two USB-A 3 connections, alongside PC compatibility and the Ethernet interface. The limitation is straightforward: it is the higher-priced choice in this head-to-head. Choose it when an unopened enclosure and those enumerated connectivity details matter more than the lower price. The decision is less compelling for someone comfortable with possible scratches on the used unit rather than paying more for condition alone.
Final choice by use case
- For a lower-price route: Choose Synology DS423 Used Enclosure when possible scratches are acceptable and the fully functional condition meets your priorities.
- For an unopened enclosure: Choose Synology DS423 New Sealed Enclosure when the new, sealed condition is the deciding requirement.
- For a drive-planning setup: Either enclosure can fit, but the table's diskless package means drives must be added separately. The price spread is $24.99, so the final call is whether that amount is worthwhile for the condition change.
