I run FreeBSD with ZFS on the home server, which primary purpose is storing and processing video files from two surveillance cameras. ZFS pool is created as RA

I run FreeBSD with ZFS on the home server, which primary purpose is storing and processing video files from two surveillance cameras. ZFS pool is created as RAID-1 array of two 2TB HDDs. Server has 2GB DDR2 RAM, but ZFS in-memory cache is restricted to 512MB. OS architecture is x64. ZFS deduplication is turned off. CPU is Intel Atom D510. Not very fast, but it was chosen for low power consumption considering special case when grid power goes off and whole system (including server, cameras and PoE switch) runs from backup DC batteries. I've never had any problems with this setup during 3+ years. It's rock solid and even has extra CPU time to run motion detection software and Transmission (BitTorrent client).