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I recently downgraded to a SFF case which meant I had to get rid of my 3+4tb HDDs which I had for general video storage for editing videos. I bought the 2 bay version and so far this enclosure is 1) easy to setup and connect 2) quite while keeping drives cool and 3) well designed. The read and write speeds are decent and the only real complaint I have is that the status LEDs aren't very obvious. For a simple enclosure just to add more storage quickly, or in my case get storage back, it's a great product that I hope lasts for a long time.

Pros - Sleek Design - Has RAID + USB-C (10 Gbps) for under $100 (2 bay version) Cons - Not a lot of information on the support site - Non-existant device failure detection / notification (in any RAID mode) - macOS management software doesn't support the latest macOSes (no Apple Silicon support) - device has a firmware update to address a sleep issue, that can only be installed on windows Design + Speed + Price are the only things this device has going for it. I was planning to use this for a homelab setup (M1 Mac mini + dual Seagate X20 HDDs in RAID 1). I had it up and running in about 30 minutes, however getting the raid mode set was rather tricky (first 2 attempts at following the directions to set raid 1 did not work). The device was able to sustain sequential read and write speeds of about 270 MB/s (not bad for HDDs in raid mirror). Switching to RAID 0 didn't seem to make any difference, and had about the same speeds as in RAID 1. My frustration came in when I tested disaster scenarios. First I tried to test a drive completely failing in RAID 1 by removing one of them while the unit was powered down, and starting it back up. The device gave no indication (beeping, lights flashing, notifications to macOS, etc.) that there was an issue. I tested copying files to and from the device, and still nothing. When I put the 2nd drive back in and powered on, still no indication of an issue. The files I copied while the 2nd drive was powered off were still there, and reading / writing new files seemed to work without any warning. Just to be sure it didn't synchronize in the background, I waited a bit (~12 ish hours) and pulled both drives out and connected them to another HDD caddy I had laying around, and sure enough - 1 disk had the newer files and the other only had the older (pre testing) files. I tried looking at the manufacturers website for guidance, but didn't find much. There was a firmware update for the 2 bay model, but it was an exe and only available for windows (no macOS way to install it as far as I can tell). There is a utility to manage the device (and Im guessing that might have shed some light on what's going on with the RAID disaster), but it does not work on any macOS version past the last 10.x release (aka no Apple Silicon / M1 / M2 support). I was hoping it would have SMART information about the drives, RAID information (aka disk 0 has failed) / notifications, and easy firmware updates. Based on the lack of macOS management software support + the failure to detect a failed drive in RAID 1 (so that I know I have to swap it out), I cannot recommend this product and am returning it.

Se ve de muy buen material, duradero. Me gusta que es silencioso, fácil de instalar. No me queda muy claro como apagarlo, lo desconecto del PC, pero sigue funcionando. Y al oprimir el botón de "power" emite un pitido.

I got the Type C 2-bay unit and I wanted to love this device. TL;DR - overheating problems and a failed drive --> junked. Don't buy a fanless unit for multiple disks. It's a basic design of an extruded metal shell, a small controller board, a power lump, and a decorative front door. I installed two drives to serve as two drives for my Mac - a general data drive of 1.5T and my Time Machine drive of 2T. Both were full-sized 3.5-in drives. I bought it so that I could use it as a USB-C connected device for two disks on one USB-C port and at USB-C speeds (never directly measured, but selected operations proved acceptably fast). The unit worked when I first got it, but it ran hot. I had decided to keep it, so I started making mods. The easy modification is to take off the front door for better air, but that didn't do enough for me. I got out my Dremel tool and cut a large hole in the back panel for better airflow. Better but still not enough. The controller board is mounted horizontally in the back, but there's a vertical board for the disk connectors that blocks thru-flow. I tried to make-do for a time, a few months. I started getting drops - Time Machine would complain that a backup had failed and Disk Utility revealed that the TM disk was simply not responding. The other disk, a data disk, remained. Power-cycling the disk case would usually bring back the TM disk, but that's a poor solution. I thought about installing a small fan, but that vertical board would still be a severe blockage. Finally, the TM disk just stopped responding at all. Not quite a click-of-death, but a thunk-of-death sound effect delivered the bad news. Failed. Was it the drive itself? Was it the drive in a hot environment created by the case? Without further testing, I don't know. But I have reverted to an open-air controller unit with the disk mounted vertically and the replacement drive runs MUCH cooler. The original Time Machine drive had previously been running the the same open-air controller unit and it ran cool at the time. Circumstantial evidence, but there it is. Having hacked up the Yottamaster unit pretty thoroughly, I don't feel that I can return it and I don't want a replacement unit, so it is junked. I got a 1-drive unit (Yottamaster fanless) for my wife's Mac and it's working great, but the multiple drives seem to demand a fan. There might be enough air movement if you use 2.5-inch drives or SSDs, so I'll give the unit credit for that.

For the 2 bay: No issues really, except I started having trouble with the drives staying connected or even connecting it all. I thought I had done something to them, but after several disc scans and tears, I realized that the included USB c to USB A Cable had gone bad. I think this was an issue from the beginning. Once that was replaced all was good. For the 5 bay: This enclosure seemed all right in the beginning, but after time I realized it has two major issues. The first problem is that the fan, while sort of quiet, runs all the time. I use these hard drives only a couple of times a week so the constant fan is unnecessary. The second and larger issue is that the drives go to sleep. In order to change that, you have to download not-user-friendly software. The process itself is easy, but daunting and should have custom software. This drive is also missing an auto-power on feature. I have these working with a 24/7 server and would like to have them come back online when power is restored.