Lesson plan
RA90
The RA90 disk drive was the first Digital Equipment Corporation drive to be based on "thin film" technology. Prior to the RA90 all Digital disk drives used "oxide" disks, which were an aluminum disk coated with a polyurethane binder resin containing gamma ferric oxide particles as the recording medium. The 1988-released RA90, which held 1.2GB, was used with controllers implementing the Mass Storage Control Protocol.
Article summary
The RA90 disk drive was the first Digital Equipment Corporation drive to be based on "thin film" technology. Prior to the RA90 all Digital disk drives used "oxide" disks, which were an aluminum disk coated with a polyurethane binder resin containing gamma ferric oxide particles as the recording medium. The 1988-released RA90, which held 1.2GB, was used with controllers implementing the Mass Storage Control Protocol.
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.