Ubuntu VM demonstrates zram and ZFS together

The author examines how zram and ZFS operate one layer below standard system views to manage memory and storage through compression, block devices, and copy-on-write mechanisms. While zram compresses anonymous memory pages to act as an efficient swap device in RAM, ZFS replaces traditional volume managers with block pointers, checksums, and transaction groups to ensure data integrity. Together, they function effectively on a single machine by addressing distinct resource pressures without competing for the same data. Open article →