On Star Trek TNG they have what appears to be a bank of Fujitsu Eagle disk drives on the bridge to the right of the elevator. Looks like 10 for a total of 4.7 GB worth about $100,000! Those are so noisy, you'd think the'd put them in another room so they didn't have to work next to them.
Though on the show, the computer core is far from the bridge, and it only makes cute sci-fi noises. As for the thing you refer to, I don't recall it being ever revealed what those are. They kind of look more like equipment lockers, but if they were, the placement doesn't make sense.
https://en.wikipedia.org/wiki/Fujitsu_Eagle
https://www.syfy.com/syfy-wire/chosen-one-of-the-day-those-c...