DatacenterDisk UK

Synology HAT5300 Series: Six Part Numbers and the Enterprise Drives Beside Them

Prices checked: · Published: · Price tracking since 5 November 2026

Quick answer

Synology HAT5300 is Synology's Enterprise Series of CMR SATA drives, from HAT5320-4T to HAT5320-24T, all 7,200 RPM, rated at 550TB per year with a 5-year warranty. From 12TB up, the workload matches the Ultrastar HC580 and Toshiba MG11 sheets, and the warranty and 2.5 million hour MTBF match the Exos X24 sheet.

Synology HAT5300 price on Amazon.co.uk

Synology HAT53xx listings, every capacity, lowest £/TB first

Product
Part number
Capacity
Interface
Recording
£/TB inc VAT
Condition
Price (inc VAT)
Buy on Amazon
Synology Enterprise HAT5320-24T HDD 24TB SATA 3.5" Hard DriveHAT5320-24T24 TBSATAnot sourced£37.50/TBNewSeller: iSale 1-2 Day Delivery£900.00£900.00Buy on Amazon
Synology - HAT5320-24T Enterprise HAT5300 HAT5320-24T 24 TB Hard Drive - 3.5 IntHAT5320-24T24 TBSATAnot sourced£37.50/TBNewSeller: iSale 1-2 Day Delivery£900.00£900.00Buy on Amazon
Synology HAT5300 12TB 3.5" 7200rpm SATA HDD; Designed for 24/7 environmentsHAT5300-12T12 TBSATAnot sourced£57.24/TBNewSeller: Upgrade Central£686.92£686.92Buy on Amazon

n/s = we could not read that value from the listing. Prices are in pounds sterling and include VAT.

The table lists Amazon.co.uk listings whose title names a HAT53 part number, lowest price per terabyte first. Prices are pounds sterling inc VAT, and each row prints whether the offer is new or used. It holds 3 listings right now. Lowest price per TB: £37.50/TB.

Check the part number on every row against the sheet. Synology's Enterprise Series sheet lists six models, at 4, 8, 12, 16, 20 and 24TB. Two numbers that can turn up in listings are not on it: HAT5310-18T, because the sheet has no 18TB model, and a HAT5310 at 20TB, because the sheet's 20TB model is HAT5320-20T. A listing's title and its part number can also name different Synology series. If they disagree, ask the seller which drive is in the box before you buy.

Synology HAT5300-4T, 8T, 12T and 16T: the series by part number

HAT5300 is the series name, and only one model carries it in its part number. If you searched for HAT5300-4T or HAT5300-8T, Synology's sheet names those drives HAT5320-4T and HAT5320-8T. The 12TB is HAT5300-12T, the 16TB is HAT5310-16T, and the 20TB and 24TB return to HAT5320. Use the full part number when you search Amazon.co.uk or compare listings, not the series name.

FeatureBuild, bufferMax sustained transfer, MTBF
HAT5320-4T, 4TBAir, 512MB281MB/s, 2 million hours
HAT5320-8T, 8TBAir, 512MB281MB/s, 2 million hours
HAT5300-12T, 12TBHelium-sealed, 256MB254MB/s, 2.5 million hours
HAT5310-16T, 16TBHelium-sealed, 512MB281MB/s, 2.5 million hours
HAT5320-20T, 20TBHelium-sealed, 1GB295MB/s, 2.5 million hours
HAT5320-24T, 24TBHelium-sealed, 1GB309MB/s, 2.5 million hours

The series splits in two at 12TB. The 4TB and 8TB models are air-filled with a 2 million hour MTBF; everything from 12TB up is helium-sealed with 2.5 million hours. The 12TB HAT5300-12T is the odd one out within the helium half, with the smallest buffer on the sheet at 256MB and the lowest sustained transfer figure at 254MB/s. The 24TB HAT5320-24T sits at the other end, with a 1GB buffer and 309MB/s.

What the Synology HAT5300 series shares at every capacity

Synology's sheet also says the drives' firmware and DiskStation Manager (DSM) work together in the series' performance tuning. That ties the drive's design to Synology's own NAS software, and the sheet frames it as a feature of the pair rather than of the drive alone.

We have not found an acoustics figure in Synology's HAT5300 data sheet, so this page does not compare the series on noise. If a quiet room is the deciding factor, that is a question to put to Synology before buying.

Synology HAT5320-24T against a 24TB enterprise hard drive

New 24TB SATA enterprise drives: Exos, Ultrastar and Toshiba MG, lowest £/TB first

No matching offer is in stock on Amazon.co.uk right now.

The second table lists new 24TB SATA drives from the Exos, Ultrastar and Toshiba MG lines, the general enterprise drives at the HAT5320-24T's capacity. It holds no listings right now. Lowest price per TB: -.

FeatureSynology HAT5320-24TEnterprise sheet, same rating
Workload rating550TB transferred per year550TB per year: Ultrastar DC HC580, Toshiba MG11
Warranty5 years5-year limited warranty: Exos X24
MTBF2.5 million hours2.5 million hours: Exos X24

Read the table row by row. The HAT5320-24T's workload rating equals the figures on the Ultrastar HC580 and Toshiba MG11 sheets, and its warranty term and MTBF equal the figures on the Exos X24 sheet. Each match is to the sheet named in its row, not to all three makers. Nor do the ratings tell you whether any of these drives is the same mechanism under another label, and we make no such claim.

The warranty terms above are the makers' own, printed on their sheets. What a given Amazon.co.uk seller offers is a separate question, worth reading on the listing before you click Buy on Amazon.

Synology HAT5300 series or HAT3300 Plus Series

Synology sells a second line, the Plus Series, under HAT33 part numbers. Its data sheet gives those drives a 3-year warranty, against 5 years for the HAT5300 Enterprise Series. The two sheets differ on more than the warranty, and the Synology HAT3300 page sets out the Plus Series on its own terms.

This page makes no claim about which Synology NAS models accept, require or favour HAT drives of either series. Check Synology's own documentation for your NAS model before you buy, and keep the part number from the sheet in hand when you do.

Planning an array? The RAID calculator below shows the usable space a set of drives leaves under each RAID level, which helps decide whether two 24TB drives or four 12TB drives suit the space you need.

Striping with single parity; three drives or more.

Raw capacity
64.0 TB
Usable capacity
48.0 TB
Used for redundancy
16.0 TB (25%)
Can fail
1 drive(s)

Figures are in TB as manufacturers state capacity (1 TB = 10^12 bytes); an operating system that counts in powers of two shows the same capacity as a smaller number (strictly TiB, often labelled TB). In classic RAID, drives of different sizes count only at the smallest drive's capacity. This calculation is not a substitute for a backup.

Frequently asked questions

Is there a Synology HAT5300 18TB?

Not on Synology's Enterprise Series sheet, which jumps from the 16TB HAT5310-16T to the 20TB HAT5320-20T. A listing for HAT5310-18T cannot be matched to that sheet, so confirm its specification with the seller.

Does the HAT5300 table show CMR for each row?

Synology describes the whole series as CMR-based. The table prints a recording technology on a row only where our records tie that listing's part number to a document, so a HAT5300 row may show none even though the series sheet says CMR.

Which HAT5300 is fastest?

On Synology's maximum sustained transfer figures, the 24TB HAT5320-24T at 309MB/s, followed by the 20TB at 295MB/s. Those are the maker's maximums, not measured results in a particular NAS.

Sources

  1. Synology: 3.5 inch SATA HDD Enterprise Series datasheet (HAT5300), accessed 9 November 2026
  2. Synology: 3.5 inch SATA HDD Plus Series datasheet (PLUSHDD3320-2026-ENU-REV000), accessed 9 November 2026
  3. Seagate: Exos X24 data sheet, DS2080.2307US, accessed 9 November 2026
  4. Western Digital: Ultrastar DC HC580 data sheet, accessed 9 November 2026
  5. Toshiba: MG11 Series product overview, Rev. 00, accessed 9 November 2026