Depending on what they do on a NAS, even ZFS might be fine with 8 GB, especially if they won't take advantage of caching (say it's for a media library or backup

Depending on what they do on a NAS, even ZFS might be fine with 8 GB, especially if they won't take advantage of caching (say it's for a media library or backups). Don't know if ZFS encryption can be accelerated on a PI, that may be a bottleneck. It could also be useful as a ZFS snapshot send target. That uses little RAM and doesn't need ZFS encryption (if your source dataset is already encrypted). --- edit: regarding ZFS RAM usage, the below is from my ZFS NAS, with out-of-the-box ZFS settings: > free -h total used free shared buff/cache available Mem: 15Gi 8.2Gi 7.2Gi 12Mi 96Mi 7.0Gi Swap: 0B 0B 0B