Talk:List of disk drive form factors

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Fujitsu M2392

With regarded to largest 8" size been unknown. Fujitsu did produce the M2392 for OEM use in 1989 with a capacity of 2.0GB see: https://books.google.ie/books?id=knLofWownIIC&pg=PA44&dq=fujitsu+M2392&hl=en&sa=X&ved=0ahUKEwjD6K3sn7fcAhVB2aQKHTgFCu4Q6AEILTAB#v=onepage&q=fujitsu%20M2392&f=false

They OEM it to at least DEC and Unisys going by a list on Bitsavers: M2392D 2.0GB 8" SMD DEC M2392K 2GB 8" SMD M2392KU 2.0GB 8" SMD UNISYS http://bitsavers.trailing-edge.com/pdf/fujitsu/disk/FujitsuDriveList.txt — Preceding unsigned comment added by 2A01:4B0:2:2:0:0:0:119 (talk) 07:54, 24 July 2018 (UTC)

Suggestion

The title of the page suggests disk drives in a general sense, but the content seems to focus almost entirely on hard disk drives. Many of the same form factors exist for other drive types, and are not obsolete. I'm not sure if the title can be changed to something that reflects the content more accurately, but if it cannot, at least some mention of other types of drives deserves some mention. — Preceding unsigned comment added by 70.68.7.152 (talk) 19:28, 10 July 2020 (UTC)

Suggested Punctuation: Ambiguous Note/Reference Superscript?

At least to me, the superscripted notes/references, in the list of heights of the 2.5-inch form factor appears ambiguous: the superscripted index number appears after the comma, suggesting that it should apply to the next item in the list, but the space after the superscripted index suggests that it should apply to previous item, as either a comma or whitespace could separate items in a list.

It seems to actually be applying to the item to the left of it.

Would this be the standard format of Wikipedia, or may we edit the article?

I was thinking of ordering the items in the list in this way: "item, superscript, comma (optional (for inner/last list item))". It would appear like this: "item[super],".

Thanks! — Preceding unsigned comment added by Alex giusi tiri (talk • contribs) 18:16, 12 May 2019 (UTC)

According to Template:Citation needed, "This template… is installed with no spaces directly after punctuation." I have mixed feelings about it myself, but that's the standard here. -- J. Randall Owens (talk) 17:26, 8 December 2020 (UTC)

Suggested addition: screw hole spacing and thread types

I'm fairly certain these have been standardized too according to a size, however as the information is a bit difficult to find, it would be nice and convenient to find it in an article like this! Viileeditor (talk) 11:41, 26 January 2020 (UTC)

Suggested addition: power specifications

Do each of these form factors have fixed power/voltage/current specifications? For example, a 3.5" HD uses 12V but a 2.5" HD uses 5V

In that case it could be a useful addition to this page — Preceding unsigned comment added by 82.144.118.19 (talk) 14:03, 11 November 2021 (UTC)

Tidbits eliminated in the article

Greatest storage limit of hard disk drives.

ST 506 / MFM: 159 MB (Maxtor)
ESDI: 630 MB (Seagate)
IDE, 3.5 inch: 750 GB (Seagate)
IDE, 2.5 inch: 320 GB (Western Digital)
IDE, 1.8 inch: 240 GB (Toshiba)
Fibre Channel: 600 GB (Seagate)
SAS: 18 TB (Seagate, Western Digital)

Actual metric units

Could you add some actual metric units, since most of the times the inch sizes are rough estimations only?

Example: 3.5" drives here name 4" width, 5,75" length and various thicknesses of e.g. 1" or 19,99 mm, unsorted. An actual 3.5" HDD data sheet names 101,85 mm (4,010") x 146,99 mm (5,787").

I always wondered why a 3.5" HDD is named that way. The only idea I have is that the HDD has the same width as a 3.5" disk drive (where 3.5" disks actually are exactly 90,0 mm = 3.543" wide). HDD disks look like 95,0 mm to me... --Traut (talk) 07:47, 6 February 2024 (UTC)