To guarantee best performance we strongly recommend to only use an external USB hard drive with Lima.
Lima supports all USB mass storage external hard drives and storage bays which don't need a specific driver installation.
Which storage capacity?
The minimum recommended size of the hard drive attached to Lima should be bigger than the storage spaces of all your devices combined. Lima is able to handle up to 7 TB of files. Lima will ultimately turn into your reference memory, so do not hesitate to think big! Once you have it, you have it forever.
If the 7TB limit is recommended for optimal performances, you won't be blocked if you add more than 7TB. We merely can't guarantee an optimal speed balance above this limit.
2.0 OR 3.0 USB?
Same as far as using it with Lima! Lima supports both. You can choose a self-powered USB hard drive with a 2.0 port. If you prefer a 3.0 port, it will work the same way.
Can I connect a SSD?
Yes, you can connect a SSD; it will work as a regular hard drive. Note that you do not need to go for a SSD, as Lima will not need that much of speed to work best. You won’t feel any difference using a SSD or a regular hard drive.
Desktop or Portable?
For hard drives up to 2 TB, it doesn't matter. If you get one that is not powered, Lima will power it for you. The difference will be mostly on the storage size. From 2TB, we recommend to get a hard drive that has an external power supply. Note that if you have a portable external hard drive with a storage capacity over 2TB, you'll still be able to use it with Lima but you might have to add a USB3 self-powered hub between Lima and the hard drive.
Which files systems?
Lima supports the following files systems : NTFS, HFS+, Ext4. If you buy a hard drive with a different file system, be aware that you can format it (do not worry, it is an easy procedure, only thing you need to do is to plug your hard drive to your computer and follow the instructions)