# 取得 Refs 的版本

```
fsutil fsinfo refsinfo
```

# Refs 版本資訊

From : https://gist.github.com/0xbadfca11/da0598e47dd643d933dc

## ReFS 1.1
* Version of formatted by Windows Server 2012.
* Version 1.1 is used already in Windows Server 8 Beta. I have never seen version 1.0.
* Can use and store alternate data streams, when mount on 8.1/2012 R2 or later.

## ReFS 1.2
* Version of formatted by Windows 8.1, Windows 10, Windows Server 2012 R2, and when specified ReFSv1 on Windows Server 2016.
* I don't know difference on disk format from 1.1.
* Cannot use alternate data streams, when mount on 2012.

## ReFS 2.0
* Version of formatted by Windows Server 2016 TP2/TP3.

> ReFS v2 Overview
> http://www.snia.org/sites/default/files/SDC15_presentations/file_sys/JRTipton_ReFS_v2.pdf
> http://www.snia.org/events/storage-developer/presentations15#file_sys

##### ReFS 22.2
* Mystery version instead of 2.0 was used in Windows 10 Preview build 10049 or earlier. Could not mount in 10061 and later.

## ReFS 3.0
* Version of formatted by Windows Server 2016 TP4/TP5.

## ReFS 3.1
* Version of formatted by Windows Server 2016.
* Added File Ghosting feature.

## ReFS 3.2
* Version of formatted by Windows 10 v1703.
* Version that can be formatted with Windows 10 Insider Preview 15002 or later (It's not default at 15002) and Windows Server Insider Preview build 16237.
* It became the default between after than 15002 and 15019 or earlier.

# ReFS 3.3
* Version of formatted by Windows 10 Enterprise v1709 and Windows Server version 1709.
* Version of formatted by Windows 10 Enterprise Insider Preview build 16257 and Windows Server Insider Preview build 16257.
* [Creation ReFS volume ability was removed from Home and Pro at build 16226 and later.](https://support.microsoft.com/en-us/help/4034825)

### Mountability
|ReFS\Windows|2012|8.1/2012 R2|10 v1507 to v1607|2016|10 v1703|10 v1709/WS v1709|
|---|---|---|---|---|---|---|
|1.1|Yes|Yes[^1]|Yes[^1]|Yes[^1]|Yes[^1]| |
|1.2|Yes|Yes|Yes|Yes|Yes|Yes|
|3.1|No|No|No|Yes|Yes[^2]|Yes[^3]|
|3.2| | |No|No|Yes|Yes[^3]|
|3.3| | | |No|No|Yes|

Notes
Empty filed is "I don't know. I haven't tested.".
[^1]: "Volume "?:" was mounted in an older version of Windows. Some features may be lost." was recorded to event log. I don't know what's been lost.
[^2]: Upgrade to 3.2 when writable mount.
[^3]: Upgrade to 3.3 when writable mount.

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