# NTFS multiple data streams

**URL:** https://forum.duplicati.com/t/ntfs-multiple-data-streams/5313
**Category:** Support
**Created:** [November 17, 2018, 12:34am UTC](https://forum.duplicati.com/t/ntfs-multiple-data-streams/5313 "2018-11-17T00:34:51Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![kenkendk](https://forum.duplicati.com/user_avatar/forum.duplicati.com/kenkendk/32/5305_2.png) [@kenkendk](https://forum.duplicati.com/u/kenkendk)
#### Post date: [November 19, 2018, 9:09am UTC](https://forum.duplicati.com/t/ntfs-multiple-data-streams/5313/2 "2018-11-19T09:09:28Z")

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Yes, it is correct. Duplicati currently does not query for alternate streams, so they are not backed up.

If we add support for alternate data streams, it will add a small overhead when querying each file (it needs to query each file for streams) but other than that there are no issues.

I have looked into adding it, but ran out of time:

> <https://github.com/duplicati/duplicati/issues/189>

It should be an easy addition if someone has the time to add it.

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