ORICO Raid 4 Bay Enclosure USB 3.0 for 3.5 Inch HDDs External Hard Drive Bay Magnetic Cover Storage Case for Office and Home Storage Expansion Up to 64 TB(4X16TB) Aluminum-NS400RU3

Works great easy setup and had not issues

I bought this because I had a stack of 8TB drives left over after a recent NAS upgrade. Not needing all of the bells and whistles of a NAS, I figured I could just add a large, cheap RAID array to my desktop for back-ups. With RAID 5 it gave me 24TB of added space, enough to backup all of my machines.The first time I used it, the flaws became obvious. Needing to back up a full 10TB drive for a data migration, I noticed that the speeds were really slow for a USB 3.0 device - in the range of 5-8 MB/s. After a day, less then 1TB had transferred, and it had failed. In order to complete the job, I would have needed to babysit the transfer with a succession of smaller jobs, and it would have taken almost 2 weeks. This is unacceptable and even accounting for cache limitations of the HDs, it felt like there was a bottleneck in the enclosure. The same drives were never this slow in my NAS. The same USB 3.0 cable/port is substantially faster with my external SSD. The only variable is the enclosure.Second, the heat. The fan does not seem to be up to the task of dissipating the heat, and the HDs were screaming hot. Nevertheless, the box itself was outputting so much heat that my office was unbearable when the transfer was running. Even when at idle, the added heat was noticeable. I need to keep it turned off or my office is uncomfortably warmer. Which sorta of ruins the point of having an always-on data back-up.This may have been an acceptable trade-off if there was a noticeable speed increase. The slow speeds may have been acceptable if it ran cool. But to simultaneously fail both is useless, like revving a car in the red to max out at 20 mph.I'm sure I'll find a use for it that only requires a trickle of data. As I said, it's a great cheap solution to put a stack of old drives to use. But I couldn't justify building something new with it: it seems criminal to have that much space crippled by data transfers that slow, I'll never be able to fully use it. If nothing else, it's warm enough that I may literally end up using it as a passive heater in my guest bedroom.

Was a ok box for a few weeks. But then slot 3 stopped working tried other drives yet it was still broken. This thing probably slowly dieing of a heat stroke as the air flow to keep the drives cool does not exist. You literally have to take off the front cover and shove your own fan in front of the uncovered drives to even remotely cool. So I basically returned it as I'm not even going to bother with another unit.

I bought this one to replace a 2-disk RAID enclosure that my system couldn't find on a continuous basis. I thought the dives were damaged but when I put them in this unit, they popped up immediately. I added 2 more drives and created a RAID 10 unit of 8 TB. As this unit has a fan for cooling, it can be distracting. Unfortunately, when I shut down my computer the fan continues to run and I have to manually turn off the unit. Also the blue plastic shell inside the cover is removable for better airflow through the side vents.

The fan doesn’t move enough air to keep even one drive cool. The enclosure would als sporadically disconnect. The Mac software is only 32 bit so it doesn’t run on newer OS versions.

This is for the 4-bay enclosure.Ordered this because I have limited physical space and this fit the bill. I use it for a Plex server so I don't think I'll ever experience sleep mode.Build quality is solid - it's small and sleek, good-quality aluminum, and the front cover has magnets strong enough to hold it on solidly, but not impossible to pull off. LEDs are bright, very little wasted space internally.Honestly, if it worked well out of the box it'd be 5 stars. However, as another review mentioned, the fan used, along with the rear aluminum grill/cover for the power button and power/usb ports, are major design flaws that potentially could have fried my drives.A few hours after installing them and setting up the server, I went to do a basic heat check. I pulled the front cover off, touched the drives, and almost burned my hand.Ran HWInfo, and the drives were at 65C! I literally could not touch them. Most consumer drives are only rated to 50C. I had to shut it off and run a room fan over them for half an hour before I could touch them to pull them out.Here's what I found:The back plate cutouts are very small for a fan grille, and badly impede airflow. The other review mentioned cutting out a square and reinstalling to protect the ports, but I didn't bother - just took the back plate off entirely. This exposes the fan but the ports are fine, and the replacement fan I put in has a grille anyway. This helped significantly.The front cover is nice-looking, but the airflow cutouts are around the edges of the cover, and the supplied fan was nowhere near enough to draw fresh air through that route.The fan supplied with the unit is literally the weakest 12V fan I've ever seen - 0.02A (tested, it was closer to 0.035A but still). It barely pushes any air. Most fans of this size (92mm x 25mm) are pushing closer to 0.2-0.3A! I had an old, 3000RPM fan of the same size and swapped it out. It's loud, but it works.With the back plate off, and the replacement fan, I've got the drives running at 44-48C - on the warmer side, but nothing worrying. Pulling the front cover off nets another 2-3C but I'm ok as long as it's under 50.I've got a few different fans on the way that will hopefully be a little quieter and push a little more air - will update the review when I get them in.

PC is needed to setup the device

Works great. Using as swappable backup drives, attached to home NAS and remotely mounted to multiple PCs.