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title: "Trashing and untrashing data"
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Copyright (C) The Arvados Authors. All rights reserved.

SPDX-License-Identifier: CC-BY-SA-3.0
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Collections have a sophisticated data lifecycle, which is documented in the architecture guide at "Collection lifecycle":{{ site.baseurl }}/architecture/keep-data-lifecycle.html#collection_lifecycle.

Arvados supports trashing (deletion) of collections. For a period of time after a collection is trashed, it can be "untrashed". After that period, the collection is permanently deleted, though there may still be ways to recover the data, see "Recovering data":{{ site.baseurl }}/admin/keep-recovering-data.html in the admin guide for more details.

# "*Trashing (deleting) collections*":#delete-collection
# "*Recovering trashed collections*":#trash-recovery

{% include 'tutorial_expectations' %}

h2(#delete-collection). Trashing (deleting) collections

A collection can be trashed using workbench or the arv command line tool.

h3. Trashing a collection using workbench

To trash a collection using workbench, go to the Data collections tab in the project, and use the <i class="fa fa-fw fa-trash-o"></i> trash icon for this collection row.

h3. Trashing a collection using arv command line tool

<pre>
arv collection delete --uuid=zzzzz-4zz18-xxxxxxxxxxxxxxx
</pre>

h2(#trash-recovery). Recovering trashed collections

A collection can be untrashed / recovered using workbench or the arv command line tool.

h3. Untrashing a collection using workbench

To untrash a collection using workbench, go to trash page on workbench by clicking on the "Trash" icon in the top navigation in workbench and use the recycle icon or selection dropdown option.

!{display: block;margin-left: 25px;margin-right: auto;border:1px solid lightgray;}{{ site.baseurl }}/images/trash-button-topnav.png!

h3. Untrashing a collection using arv command line tool

You can list the trashed collections using the list command.

<pre>
arv collection list --include-trash=true --filters '[["is_trashed", "=", "true"]]'
</pre>

You can then untrash a particular collection using arv using it's uuid.

<pre>
arv collection untrash --uuid=zzzzz-4zz18-xxxxxxxxxxxxxxx
</pre>

The architecture section has a more detailed description of the "data lifecycle":{{ site.baseurl }}/architecture/keep-data-lifecycle.html  in Keep.