# Copy \> 5GB zarr file to S3

**URL:** <https://discourse.pangeo.io/t/copy-5gb-zarr-file-to-s3/3859>\
**Category:** Data\
**Created:** [November 27, 2023, 9:58pm UTC](https://discourse.pangeo.io/t/copy-5gb-zarr-file-to-s3/3859 "2023-11-27T21:58:51Z")\
**Posts on this page:** 1\
**Showing post:** 5

<div class="post-metadata">

**Author:** ![rabernat](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/rabernat/32/22_2.png) [@rabernat](https://discourse.pangeo.io/u/rabernat)\
**Post date:** [November 29, 2023, 1:35am UTC](https://discourse.pangeo.io/t/copy-5gb-zarr-file-to-s3/3859/5 "2023-11-29T01:35:38Z")

</div>

Do not use gzip with Zarr. Instead, use a Zip file. It is supported natively by the format (e.g. [ZipStore](https://zarr.readthedocs.io/en/stable/api/storage.html#zarr.storage.ZipStore)).

Similar discussion happening at [Any tips on avoiding high AWS S3 cost when storing Zarr's with lots of objects - #13 by rabernat](https://discourse.pangeo.io/t/any-tips-on-avoiding-high-aws-s3-cost-when-storing-zarrs-with-lots-of-objects/1977/13)

---

_[View the full topic](https://discourse.pangeo.io/t/copy-5gb-zarr-file-to-s3/3859)._