Almost any grandmother that would be using macOS, until Apple not decided to go with ZFS: * https://arstechnica.com/gadgets/2009/10/apple-abandons-zfs-on-mac-o

Almost any grandmother that would be using macOS, until Apple not decided to go with ZFS: * https://arstechnica.com/gadgets/2009/10/apple-abandons-zfs-on-mac-os-x-project-over-licensing-issues/ https://arstechnica.com/gadgets/2009/10/apple-abandons-zfs-o... * https://web.archive.org/web/20091103163642/http://mail.opensolaris.org/pipermail/zfs-discuss/2009-October/033125.html https://web.archive.org/web/20091103163642/http://mail.opens... There's no reason why any newly created file system shouldn't have checksumming, and if grandmothers don't know what's happening underneath the hood it's no worse than them not knowing how virtual memory or the TCP/IP stack work.