Talk:CMS file system

Computing Start‑class

	This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ComputingWikipedia:WikiProject ComputingTemplate:WikiProject ComputingComputing
Start	This article has been rated as Start-class on Wikipedia's content assessment scale.
???	This article has not yet received a rating on the project's importance scale.

Minidisk (CMS)

It seems that Minidisk (CMS) redirects here. Maybe that isn't so bad, but it also doesn't seem right. VM(CP) minidisks can be formatted in any (or no) disk format, likely including those of OS/360 or MVS. Is there enough for an article on minidisks, separate from CMS? The reason I am wondering is discussion on History of IBM magnetic disk drives which leaves open the question about physical or logical devices. With devices like the 3390-A, which are logical even as seen without any OS, there should be somewhere discussed the idea of logical disk drives. Gah4 (talk) 00:10, 8 May 2021 (UTC)[reply]

@Gah4: Maybe a separate section in the CP/CMS article would be better? It was a unique feature of CP when it was introduced(?). Is there any material on where the idea came from? It certainly influenced many later systems including the PC-DOS partition tables. Peter Flass (talk) 01:29, 8 May 2021 (UTC)[reply]

There is also VM_(operating_system) and probably others. I am trying to understand all the ways that disks are virtualized, and how they should be discussed here. There is, for example, Network File System though that is at a higher level, but still... Gah4 (talk) 02:35, 8 May 2021 (UTC)[reply]

@Peter Flass: I've added a generic description of minidisks to VM (operating_system) and updated my footnote to CMS file system to mention when cuu became irrelevant. Shmuel (Seymour J.) Metz Username:Chatul (talk) 10:23, 11 May 2021 (UTC)[reply]

It seems that minidisks should be discussed in Storage virtualization, although that article seems to be a mishmash. The lede says it's about I/O device virtualization, but it then seems to go on to talk about virtial storgage. Is the minidisk the earliest example of virtual disks? It would be nice to say that somewhere. Peter Flass (talk) 15:25, 11 May 2021 (UTC)[reply]

CP-67 is the first virtualization of disks that I'm aware of, but ASP and HASP virtualized unit record equipment, and DCS may have. 17:14, 11 May 2021 (UTC)Shmuel (Seymour J.) Metz Username:Chatul (talk)