thx1138v2 :
Yes, they exist but you need a better definition of what you are looking for. How many drives? Two is pretty simple. Just search for "external IDE drive rack". If you want more than two, how many?
How do you want to access them? Just from one machine with or multiple machines? If it's just one machine you could do it with USB and a USB hub. If more than one machine needs to access them you'll need ethernet or Wifi which means a more complex machine - basically just a simple PC with minimal specs. You might be able to find an old NAS machine that would handle IDE drives or use IDE to SATA converters.
Does it need to be portable?
Sorry for not being very specific.
I am unsure of how many at the moment, but let's just say 6-10 for now.
Just one machine would need to access them.
It does not need to be portable.