Hi Bill & Kyoto University,
   I skimmed Bill's tragic article about data loss and a translation of
   the notice he said concluded the data was unrecoverable
   at [1]https://www.iimc.kyoto-u.ac.jp/ja/whatsnew/information/detail/211
   228056999.html .
   The notice doesn't appear to mention data recovery from the physical
   disks. Do you know if there is any information on the university
   pursuing data recovery here?
   There is an advanced form of data recovery involving analog reading of
   the magnetic fields over the platters, which can in theory recover bits
   even after they have been overwritten with other data.
   With this much research data lost, mention of such things rises.
   On Sun, Jan 2, 2022, 10:52 PM jim bell <[2]jdb10987@yahoo.com> wrote:

[3]https://www.bleepingcomputer.com/news/security/university-loses-77tb-of-resea
rch-data-due-to-backup-error/

References

   1. https://www.iimc.kyoto-u.ac.jp/ja/whatsnew/information/detail/211228056999.html
   2. mailto:jdb10987@yahoo.com
   3. https://www.bleepingcomputer.com/news/security/university-loses-77tb-of-research-data-due-to-backup-error/