I'm at the complete other side of OpenZFS, I run it on a $349 Desktop based on a Ryzen 3 2200G; 512GB nvme-SSD and 2TB HDD with a 128GB sata-SSD as cache. I use the system for my data and for my collection of Virtualbox VMs (~60 VMs, all Windows Releases (1.04 to 11 Pro) and all Ubuntu LTS releases). The daily used VMs are on the nvme-SSD and the other VMs on the 1st partition of the HDD. The data is on the last partition of the HDD. The sata-SSD has 4 partitions, for the VMs 90GB+5GB for L2ARC and SLOG and for my data 30GB+3GB also for L2ARC and SLOG. I'm really happy with the system performance. The Linux VMs boot in say 6.5 to 12 seconds from nvme dependent on the distro or flavor and in 10 to 25 seconds from the cached HDD. The Windows XP VM boots always in 25 seconds and the Windows 11 Pro VM in ~40 seconds, both from the nvme. One of my 2 backups runs on FreeBSD. It has a Pentium 4 HT (3.0GHz); 1 GB DDR (400MHz); 2x IDE 3.5" (250+320GB) and 2x SATA 2.5" (320+320GB) 2x2 striped of course :) Due to a 95% load on one CPU thread the transfer speed is ~30MB/s. For the incremental ZFS backup the system is in use for 1 max 2 hours/week since 2018 and the disks have below 3 power-on years. During the backup I control the FreeBSD system with ssh+xorg and conky :) The first Sunday after 1-1-2024 I plan to install FreeBSD 14.0 + XFCE + Samba :)
@trumanhw
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Wish I'd seen this. 😢 Would love to learn more about Special VDevs and dRAID Would sliced (partitioned) [RAIDz2 or dRAID2] for special vDevs (be more efficient than mirrors? And frequent differential / incremental backups of the [RAIDz2 or dRAID2] via rSYNC ...? (or would there be other downsides that'd make it not worth it ..?
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