HDD arrays for “Linux ISOs” have never been better. In fact, I’m pretty sure that modern day is something of a golden era thanks to the dropping prices per TB on spinning media.
Yup. Currently building a new storage setup with 18TB disks. Each of my 18TB HDD is also backed by a 512GB NVME cache to speed the already fast HDDs up.
Distributed raids (like ceph and glusterfs) and raid expansion (recently added in zfs) also make it easy for a homelabber to get started cheap and continuously add new disks.