These include SD cards, USB thumb drives, DVD or Blu-ray discs, external hard drives, NAS (Network Attached Storage) boxes, and online (cloud) services. There are lots of different ways to store photos. Ideally, all three sets of photos should be on different media, and one copy should be “off site”, not in your home. When storing digital photos, aim to have at least three copies of everything, preferably more. However, iPhoto/Photos was/is creaking with the amount of photos I have.
I use iPhoto (now Photos) and briefly looked at Adobe Lightroom, but didn’t really need the pro features for the handful of times I shoot in RAW. The next part of the question is how best to manage photos. I’m still uncomfortable with the thought of all my family photos being online somewhere, which I accept may be a little illogical as I do use cloud back up for other items.
I would like to share a database with my husband, so we can store family and travel photos from phones and cameras. My next laptop will probably have a 512GB or smaller SSD, so I will need another way to store them. I store my photos on a six-year-old MacBook Pro, which still has a traditional hard drive.