Byte & Key

Choose Your NAS Storage & Drives Setup: 2-Bay, 4-Bay, or 6-Bay Compared

Choosing among 2-bay, 4-bay, and 6-bay NAS storage & drives enclosures means balancing bay count, condition, connections, and price. Compare two Synology DS423 versions, a white home-cloud model, and a NETGEAR ReadyNAS.

Last updated Aug 24, 2026

Choosing NAS storage & drives is less about finding one universal winner and more about matching the enclosure to your drive plan. The important trade-offs here are bay count, new versus used condition, connection types, home-cloud features, and a listed price range that spans $129.99 to $374.99.

Quick take

The shortlist breaks into a Synology DS423 model pair, a white home-cloud enclosure, and a NETGEAR ReadyNAS unit. The key fork is whether you prioritize an exact model, new or used condition, home-oriented functions, or a lower listed price. Use the price table first, then the decision matrix and product notes to narrow the fit.

Listed-price comparison

The four listed prices have a $245.00 spread from the NETGEAR ReadyNAS at the low end to the new sealed Synology DS423 at the high end. The bars show relative position within this group, not performance or storage capacity.

NAS enclosureListed pricePrice position
Synology DS423 4-Bay Network Attached Storage Enclosure$350.00
Synology DS423 4-Bay Network Attached Storage Enclosure, New, Sealed$374.99
2-Bay Network Attached Storage NAS Enclosure$346.97
NETGEAR ReadyNAS RND-6A RNDU6000-100NAS$129.99

Decision matrix

  • Bay count: The white enclosure lists two bays, both Synology DS423 versions list four, and the NETGEAR ReadyNAS lists six. Treat those as different expansion paths rather than assuming that a larger number automatically means better performance.
  • Condition: The two Synology choices separate into used and new, while the white enclosure is new and the NETGEAR unit is used.
  • Device and connection context: PC compatibility is listed for both Synology enclosures, Android compatibility is listed for the white enclosure, and the NETGEAR unit names RJ-45 and USB-A connectivity.
  • Model preference: The Synology pair shares the DS423 model designation. The NETGEAR entry identifies the ReadyNAS RND-6A RNDU6000-100NAS model, while the white enclosure is described by its home-cloud purpose rather than a named model.

Product notes

Synology DS423 Enclosure

Synology DS423 4-Bay Network Attached Storage Enclosure

Synology DS423 Enclosure is a straightforward choice when the model name itself matters and a four-bay enclosure fits the plan. Ethernet interface and PC compatibility are listed, giving a shopper concrete anchors for a network-storage setup. The limitation is the used condition: small imperfections such as scratches are expected in the description, and no drives are included. It is therefore an enclosure-only purchase rather than ready-populated storage. Pick it when the DS423 identity and four-bay layout matter more than new condition. The listed $350.00 price also places it below the sealed DS423 while keeping the same model designation.

Synology DS423 New Sealed Enclosure

Synology DS423 4-Bay Network Attached Storage Enclosure, NEW, SEALED, DISOUNTED

Synology DS423 New Sealed Enclosure suits shoppers who want the DS423 model with a new, sealed condition. Its listed form factor covers both 2.5- and 3.5-inch drives, and the description names two Gigabit Ethernet ports plus 2GB of DDR4 RAM. Those are useful selection details without requiring a performance ranking. The concrete limitation is that the enclosure is diskless, so drives still need to be added. Its $374.99 listed price is also the highest in this comparison. Choose this version when sealed condition and the named drive form factor matter more than choosing the least expensive enclosure.

White Home Cloud NAS Enclosure

2-Bay Network Attached Storage NAS Enclosure Diskless White Home Cloud Backup

The 2-Bay Network Attached Storage NAS Enclosure is aimed at a different brief from the Synology units. Its description centers private home-cloud access, remote file access across desktop, laptop, Mac, PC, and mobile devices, plus 24/7 home monitoring with multiple IP cameras. Android compatibility and a white tabletop format add specific context for a home setup. The limitation is the two-bay, diskless design, so it does not suit a plan built around six drive bays and still requires drives before storage can be used. Choose it for the home-cloud backup and monitoring functions named in its description, rather than for a particular branded model.

NETGEAR ReadyNAS RND-6A

NETGEAR ReadyNAS RND-6A RNDU6000-100NAS 6-Bay Network Attached Storage

NETGEAR ReadyNAS RND-6A RNDU6000-100NAS is the clearest fit for a six-bay enclosure with explicitly named RJ-45 and USB-A connectivity. The model designation makes it easy to distinguish from the other choices, and its $129.99 listed price is the lowest in the comparison. The trade-offs are its used condition and the stated cosmetic scratches and scrapes; cables and hard drives are not included. That combination makes the purchase an unpopulated enclosure with accessories to assemble separately. Choose it when the six-bay layout and lowest listed price lead the decision, while accepting the used cosmetic condition.

Final recommendation by use case

  • For a named Synology model: Choose Synology DS423 Enclosure when the DS423 designation and used enclosure format fit your plan.
  • For new, sealed condition: Choose Synology DS423 New Sealed Enclosure when that condition and its listed form factor are the deciding factors.
  • For private home cloud and camera monitoring: Choose White Home Cloud NAS Enclosure for the functions described around remote access and IP cameras.
  • For six-bay hardware and the lowest listed price: Choose NETGEAR ReadyNAS RND-6A when RJ-45 and USB-A connections also fit the setup.
Products in this article
Synology DS423 4-Bay Network Attached Storage EnclosureUSD 350.00View on eBaySynology DS423 4-Bay Network Attached Storage EnclosureUSD 374.99View on eBay2-Bay Network Attached Storage NAS Enclosure Diskless White Home Cloud BackupUSD 346.97View on eBayNETGEAR ReadyNAS RND-6A RNDU6000-100NAS 6-Bay Network Attached StorageUSD 129.99View on eBay
Synology DS423 4-Bay Network Attached Storage EnclosureUSD 350.00View on eBaySynology DS423 4-Bay Network Attached Storage EnclosureUSD 374.99View on eBay2-Bay Network Attached Storage NAS Enclosure Diskless White Home Cloud BackupUSD 346.97View on eBayNETGEAR ReadyNAS RND-6A RNDU6000-100NAS 6-Bay Network Attached StorageUSD 129.99View on eBay

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