GeoTIFF file from Snap cannot be opened in ArcMap

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How to export data from SNAP to QGIS?

Hi, I’m working with Sentinel-1 image (GRD) and I’ve applied standard process chain through SNAP in order to work better in QGIS, but I don’t know which format is better. I’ve tried GeoTiff but the final image was 8.70 GB! It’s ok?