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Re:10 years since Google said to “hang tight” about Linux su... by mr_toad on Sunday April 24, 2022 @08:58PM (#31149736)
S3 is object storage not block storage.

https://www.digitalocean.com/community/tutorials/object-stor...

Object storage isn’t random access (the ability to read and write any part of a file) the way a disk drive is. This causes complications for software that expects to be able to randomly access a file like they would on a disk.

Re:10 years since Google said to “hang tight” about Linux su... by drdaeman on Sunday April 24, 2022 @10:49PM (#31150328)
WebDAV is also an object storage protocol but it can do random access. Well, almost.

Partial reads are supported everywhere out of box just by using the Content-Range HTTP header.

Partial writes aren't standard, but some implementations e.g. SabreDAV can do those using PATCH with X-Update-Range header (and e.g. rclone supports this).

WebDAV has its warts and limitations but it's a very underappreciated protocol.