Work is underway on OpenZFS Mastery.
ZFS can run on anything the operating system presents as a block device. The most common are disks. Spinning rust, SSD, NVMe? Sure. Virtual disk files stored on another filesystem? If that’s what you’ve got, ZFS will cope with the extra overhead and with the right settings can still protect your data. USB flash drives? The performance will be terrible, but maybe you don’t care. Memory disks? Uh… presumably you have a reason for wanting a robust ephemeral filesystem, but fine, I guess? We won’t delve into specific differences between physical media types, as any advice we might offer will be overtaken by reality. We will discuss how to use that storage, however.
You want specific hardware advice? Fine. Spinning rust is slow and inexpensive, SSDs cost more but are faster, and NVMe is blazing fast but pricier still and you can only fit a handful on a system without resorting to extraordinary means.
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