What are the NAS expansion bays with the largest storage capacity available?

This page compares 5 NAS expansion bays with verified specifications and prices. Top options include QNAP TL-R1620Sep-RP, Synology RX6022sas, QNAP TL-R6020Sep-RP. Prices range from £1,655 to £6,362. All data is sourced from manufacturer documentation and specialist retailers.

Product ⇅ Price ⇅ Capacity (pcs) ⇅ Read Speed (MB/s) ⇅ Write Speed (MB/s) ⇅ Interface ⇅ Compatibility ⇅ Power Consumption (Watts) ⇅
QNAP TL-R1620Sep-RP
US 		£2366.43 ≈ 16 — — 4 x 12Gb/s SAS 3.0 wide ports, Mini-SAS HD SFF-8644 QNAP NAS with QTS or QuTS hero 4.5.1 or later and a SAS port or QXP PCIe SAS expansion card 207.13 W

The QNAP TL-R1620Sep-RP is a 16-bay 3U rackmount SAS storage expansion enclosure for expanding compatible QNAP NAS systems. It supports SAS and SATA drives, redundant 550W power supplies, daisy chaining of up to 16 enclosures, and up to 4.6PB of raw capacity.

★ Ideal for

This model suits users seeking NAS expansion bays with the largest storage capacity because its 16 drive bays can be expanded through daisy chaining up to 16 enclosures for up to 4.6PB of raw capacity.

Sources:
B&H Photo Video
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Synology RX6022sas
US 		£3429.67 ≈ 60 — — 2 x Mini-SAS HD expansion ports HD6500 811.8 W access; 231 W HDD hibernation

The Synology RX6022sas is a diskless 4U expansion unit with 60 hot-swappable bays for 3.5in SAS hard drives and support for 2.5in SATA SSDs. It connects to the Synology HD6500, supports SAS multipathing, and is suited to high-density business storage deployments requiring substantial capacity expansion.

★ Ideal for

This suits questions about NAS expansion bays with the largest storage capacity because it provides 60 drive bays and can expand an HD6500 system to 300 total bays using up to four RX6022sas units.

Sources:
Bechtle Saitech
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QNAP TL-R6020Sep-RP
US 		£6361.77 ≈ 60 — — 4 x 12Gbps SAS 3.0 wide ports, Mini-SAS HD SFF-8644 QNAP NAS models running QuTS hero h5.2.0 or later with a compatible SAS port or QXP PCIe SAS interface card; recommended models include TDS-h2489FU R2, TS-h2490FU, and TS-h1090FU 746.21 W typical operating consumption with drives fully populated

The QNAP TL-R6020Sep-RP is a 4U rackmount SAS/SATA expansion enclosure with 60 drive bays and over 1PB of effective capacity in one chassis. It suits enterprises managing surveillance archives, big data, cold storage, and other large-scale workloads that need redundant power, dual-path connectivity, and expansion to up to four enclosures.

★ Ideal for

This product specifically suits questions about NAS expansion bays with the largest storage capacity because its 60 bays can provide over 1PB of effective capacity in one chassis and scale to 240 drives across four daisy-chained units.

Sources:
Adorama Connection Sunol Tech
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QNAP TL-R2400PES-RP
US 		£2957.84 ≈ 24 x 3.5-in SATA — — PCIe Gen 3 x8, 2 x SFF-8644 1x2 TS-855eU, TS-855eU-RP, TS-h987XU-RP, TS-h1090FU, TS-h1277AXU-RP, TS-h1677AXU-RP, TS-h1887XU-RP, TS-h2287XU-RP, TDS-h2489FU, TS-h2490FU, TS-h3087XU-RP 85.9 W HDD sleep mode; 147.2 W typical operating mode

The QNAP TL-R2400PES-RP is a 24-bay 4U rackmount PCIe JBOD enclosure supporting SATA hard drives and solid-state drives. It provides up to 64 Gb/s transfer speed, redundant 550 W power supplies, and expansion for compatible QNAP NAS systems running QTS or QuTS hero.

★ Ideal for

This product suits users seeking NAS expansion bays with the largest storage capacity because its 24 drive bays can scale to up to 4.1 PB with up to twelve enclosures and 288 hard drives on compatible QuTS hero NAS systems.

Sources:
Connection DWG
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Synology RX1222sas
US 		£1655.18 ≈ 12 — — SAS IN-port and SAS OUT-port FS6400, FS3600, FS3400, SA3610, SA3600, SA3410, SA3400 194.4 W access; 82.56 W HDD hibernation

The Synology RX1222sas is a diskless 12-bay rackmount expansion unit supporting 3.5in SAS HDDs, 2.5in SAS SSDs, 3.5in SATA HDDs, and 2.5in SATA SSDs. It provides hot-swappable bays, DSM-managed RAID, redundant power supplies, and online volume expansion for compatible enterprise Synology NAS systems.

★ Ideal for

This suits users seeking NAS expansion bays with the largest storage capacity because it adds 12 bays per unit, supports up to seven units, and can provide up to 84 additional SAS or SATA drive bays.

Sources:
Connection Broadband Buyer NET-BRIDGE
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