A couple of questions answered:
1. Which CD/DVD ripper do you use? Same question for the ripping software? Windows or MAC?
I use DBPoweramp ripping software. The CD/DVD mechanism is an internal Asus 24x DVD-RW Serial-ATA Internal OEM Optical Drive DRW-24B1ST in my Windows 10 Pro Intel computer.
2. Do you store your ripped files on a portable SSD or NAS? Which make/model/size (GB)? I rip the audio disks to my Synology DS1821+ 50 TB NAS which is Ethernet network attached. I'm using five Seagate 14 TB IronWolf NAS drives in a RaId SHR array configuration.
3. How are the transfer rates from external SSD or NAS to the i5's internal SSD? I don't use the USB method of moving files around. The USB speed depends on if you are using USB 2.x or 3.x capable devices. 3.x is much faster but these large file transfers can take time. I'm using Ethernet and speeds are fairly quick but multi-terabyte file copies can take overnight to copy depending on network utilization.
4, How do you maintain back-ups for everything? I backup the Roon Core database using the Roon backup facility to both USB thumb drives plugged into the i5 as well as to the NAS. I use a 14 TB external drive USB 3.0 attached to the NAS to back up music stored on the NAS as well as a second NAS.