dask.array.to_zarr(arr, url, component=None, storage_options=None, overwrite=False, compute=True, return_stored=False, **kwargs)[source]

Save array to the zarr storage format

See https://zarr.readthedocs.io for details about the format.

arr: dask.array

Data to store

url: Zarr Array or str or MutableMapping

Location of the data. A URL can include a protocol specifier like s3:// for remote data. Can also be any MutableMapping instance, which should be serializable if used in multiple processes.

component: str or None

If the location is a zarr group rather than an array, this is the subcomponent that should be created/over-written.

storage_options: dict

Any additional parameters for the storage backend (ignored for local paths)

overwrite: bool

If given array already exists, overwrite=False will cause an error, where overwrite=True will replace the existing data.

compute: bool

See store() for more details.

return_stored: bool

See store() for more details.


Passed to the zarr.creation.create() function, e.g., compression options.


If arr has unknown chunk sizes, which is not supported by Zarr.