DatacenterDisk

HAT531020T: CMR or SMR?

Not stated: we hold no maker document that names HAT531020T's recording technology. We know what the drive is - a Synology 20TB SATA-6G hard drive (3.5") that we track - but a recording technology printed without a source is a guess, and for RAID, NAS or ZFS use that guess is the one that matters. Check the drive's label against the maker's data sheet, or choose one of the drives below whose CMR status is sourced.

MakerSynology
Capacity20TB
InterfaceSATA-6G
Recording technologyNot sourced

No seller we track has HAT531020T in stock right now. That describes today's listings only - it says nothing about whether the model is discontinued.

How to settle it for this drive

Read the model number on the drive's own label, then find Synology's data sheet or product manual for that family. A document that prints HAT531020T in its own row of a recording-technology table settles the question. A family page that names no part numbers does not: we have found maker pages that list neither a part number nor a recording method, and we no longer count them as sources. A retailer listing is not a source either - it is a seller's description, and sellers repeat what other listings say.

Documented Synology drives at 20TB

We hold no maker document for any Synology drive at 20TB yet, so there is no documented sibling to compare against.

When a source turns up

When we find a maker document that names HAT531020T, this page will state the answer with that document linked and the date we read it, the same way our documented pages do. Until then, the honest answer is that we do not know.

In-stock drives with sourced CMR, 20TB and up