>>>I have downloaded a file which is about 4.3 Gb. It is a zip file. When I try to extract all I get message that there is not enough space. That 700 pb is required. I looked up the PB (Petabyte) and see that it is huge file. Could it be that this 4.3 Gb file has so much zipped?
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>>Sounds pretty corrupt to me.
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>Yes, something is not right. I will check it (not sure how yet).

Check message #1539527, I've added a part which may apply here.