# Disabling compression for all volumes (including segmentations)
**URL:** https://discourse.slicer.org/t/disabling-compression-for-all-volumes-including-segmentations/8569
**Category:** Support
**Created:** [September 25, 2019, 7:46pm UTC](https://discourse.slicer.org/t/disabling-compression-for-all-volumes-including-segmentations/8569 "2019-09-25T19:46:37Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@muratmaga](https://discourse.slicer.org/u/muratmaga)
#### Post date: [September 25, 2019, 7:46pm UTC](https://discourse.slicer.org/t/disabling-compression-for-all-volumes-including-segmentations/8569/1 "2019-09-25T19:46:37Z")
I am trying to use the sample script [Documentation/Nightly/ScriptRepository - Slicer Wiki](https://www.slicer.org/wiki/Documentation/Nightly/ScriptRepository#Change_default_file_type_for_nodes_.28that_have_never_been_saved_yet.29)
to disable compression for all volume types by putting this example to my .slicerrc.py
> #set the default volume storage to not compress by default
> defaultVolumeStorageNode = slicer.vtkMRMLVolumeArchetypeStorageNode()
> defaultVolumeStorageNode.SetUseCompression(0)
> slicer.mrmlScene.AddDefaultNode(defaultVolumeStorageNode)
> logging.info(“Volume nodes will be stored uncompressed by default”)
But this doesn’t disable compression for segmentation nodes (download MrHead.nrrd, create a segment and see in the save as dialog box that while compression is unchecked for MRHead.nrrd, it is still enabled for \_seg.nrrd segmentation volume).
There is another snippet that disables compression specifically for segmentations,
> #set the default volume storage to not compress by default
> defaultVolumeStorageNode = slicer.vtkMRMLSegmentationStorageNode()
> defaultVolumeStorageNode.SetUseCompression(0)
> slicer.mrmlScene.AddDefaultNode(defaultVolumeStorageNode)
> logging.info("Segmentation nodes will be stored uncompressed
But I want to do it for both volumes and segmentation, is that possible?
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 25, 2019, 7:48pm UTC](https://discourse.slicer.org/t/disabling-compression-for-all-volumes-including-segmentations/8569/2 "2019-09-25T19:48:35Z")
Yes, of course, you can define default nodes for any number of node types.
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### Author:  [@muratmaga](https://discourse.slicer.org/u/muratmaga)
#### Post date: [September 25, 2019, 8:01pm UTC](https://discourse.slicer.org/t/disabling-compression-for-all-volumes-including-segmentations/8569/3 "2019-09-25T20:01:09Z")
Yes, actually just including both snippets in the same .slicerrc.py worked. I thought the second setting defaultVolumeStorageNode a second time would overwrite. But works great.