.7z (Indicates the data is compressed using the 7-Zip LZMA/LZMA2 algorithm). Naming Convention Breakdown:
.001 (Indicates the first volume of a multi-part split archive). SS-JulSS-011_s.7z.001
Archiving large datasets or media collections. SS-JulSS-011_s.7z.001
Sharing high-definition content where host sites limit uploads to 1GB or 2GB per file. SS-JulSS-011_s.7z.001