Blu-ray Disc recordable
Blu-Ray Disc that can be written to once with an optical disc recorder
Blu-ray Disc Recordable (BD-R) and Blu-ray Disc Recordable Erasable (BD-RE) refer to two direct to disc optical disc recording technologies that can be recorded on to a Blu-ray-based optical disc with an optical disc recorder. BD-R discs can only be written to once, whereas BD-RE discs can be erased and re-recorded multiple times, similar to CD-R and CD-RW for a compact disc (CD). Disc capacities are 25 GB for single-layer discs, 50 GB for double-layer discs, 100 GB ("BDXL") for triple-layer, and 128 GB ("BDXL") for quadruple-layer (in BD-R only).
The minimum speed at which a Blu-ray Disc can be written is 36 megabits (4.5 megabytes) per second.
As of 2024, one of the primary pioneers of the Blu-ray disc, Sony, is winding down production of recordable Blu-ray discs in its plant in Tagajō, Japan. Sony plans to gradually cease its manufacturing of optical media, including recordable Blu-ray discs.
Version
As of November 2022, there are five versions of BD-RE and four versions of BD-R formats. Each version includes three Parts (a.k.a. Books): Basic Format Specifications, File System Specifications, Audio Visual Basic Specifications. Each part has sub-versions (e.g.
“Blu-ray Disc recordable” enters the record as blu-Ray Disc that can be written to once with an optical disc recorder. Crown Archives preserves that source wording while asking what Blu-ray, Disc and recordable can confirm, complicate or overturn.
Why this record matters
“Blu-ray Disc recordable” is worth following because a concise public description often conceals a longer documentary argument. Here, Blu-ray, Disc and recordable provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q795736. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2024 and 2022.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Blu-ray Disc recordable”, its source revision and the description used here.
- Expand the search: follow Blu-ray Disc recordable primary sources, Blu-ray Disc recordable archive and Blu-ray research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Blu-ray Disc recordable”?
- Which institution is responsible for the underlying evidence?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Blu-ray Disc recordable” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.