[didgetmaster]

I think that is one of the main reason it failed to launch. It was just too easy for the metadata stored in the separate database to become out of sync with the actual file data.

Microsoft saw the tech support nightmare this could generate, and abandoned the project.

[pseudosavant]

They just weren't able to pull it off for whatever reason. I actually ran BeOS as my daily driver for quite a while (way) back in the day. BeFS was genuinely amazing, and not something I've seen replicated elsewhere yet. There hasn't really been anything interesting done in filesystems used by users on devices in a really long time.

[aforwardslash]

BeOS was mostly a single-user system, and filesystem was optimized for that use case. Having to consider that an opened file for reading may be modified by a remote system running with a different user complicates things, so while I do agree that BeFS was quite ahead of his time, it focused on a somewhat specific use case; At the time, you wouldn't expect that you could eg. correctly backup your email client data without shutting down the application.

[aforwardslash]

It failed because it was slow and provided no obvious benefit to the average user, other than wasting disk space. There is a fair amount of tricks and optimizations in NTFS to balance speed of access and shadow copy mechanisms, in a pre-SSD era, where the average random throughput of a consumer-grade SATA disk was single digit MB/s

[p_ing]

It was abandoned due to The Cloud. There was no need for WinFS as a tech when you could store everything in The Cloud.

It was also complex, ran poorly, and would have required developers to integrate their applications.

Microsoft had long solved the problem of blobs and metadata in ESE and SharePoint's use of MS SQL for binary + metadata storage.

[WalterGR]

> it was just a SQL database that stored arbitrary data.

I mean, for some definitions of “just”, “SQL database”, and “arbitrary data.” :) It was a schematised graph database implemented on top of a slimmed-down version of SQL Server. The query language was not SQL-based.

> It was abandoned due to The Cloud.

It was discontinued circa 2007. The cloud was much less of a Thing back then. I don’t recall that factoring at all into the decision to cancel the project, though it would have been prescient.

(Disclaimer: I was on the WinFS team at Microsoft.)

[p_ing]

Skydrive released in 2007.

But fair enough, I grabbed my Beta 1 copy from \\products; it was fun to play with. I wish they’d seen it through. Microsoft had plenty of 'slimmed down' versions of SQL Server, i.e. the CRM addin for Outlook, so that isn't quite a unique feature of WinFS.

[didgetmaster]

Did Microsoft tell the WinFS team why they decided to cancel the product? If so, can you reveal what the real reason was?

[WalterGR]

I mean, it’s not like whenever a project is cancelled at Microsoft they bring team members into a room and say, “We’re totally going to lie to the public (and therefore the shareholders) but here’s the real reason...”

Maybe all the nuances aren't fully communicated publicly when a project is cancelled, but I don’t recall having a sense that what was said publicly was any different than our understanding internally. But that was almost 20 years ago.

The majority of the teams I was on during my time there were ‘internal startups’: Mira, NetGen, WinFS, MatrixDB. Like startups anywhere, projects being unceremoniously cancelled was par for the course.

[didgetmaster]

I don't remember Microsoft ever really giving the public a reason for canceling it. It just seemed to disappear with everyone just speculating what the reason was. Was there a press release that I missed?

[WalterGR]

I vaguely recall something being posted to the blog. I doubt the blog is still up. I could google around and check the Wayback Machine and so forth, but it would probably be faster if you did it yourself. I don’t have any inside info, I’m afraid.