At the height of first phase of using Macs between 1992 and 1998 having an Mac LCII and later a PowerMac 6100/60, I had a 5 device SCSI chain including a Zip Drive and later a Jaz drive (1GB removable drive) along with two hard drives and CDROM drive.

I remember that the biggest problems with Zip drives was that most Windows PCs didn’t come with SCSI and that they had some Frankenstein parallel port version.

For context when I bought my Zip drive, my internal hard drive was only 80MB and part of that was used as an emulated hard drive for my Apple //e card.