This iUniker cluster rack helped me transform my desk (with multiple RP cases) into a pretty neat and clean configuration. All parts were present (and a few extra bolts/nuts were added just in case), all fans worked and as long as you followed the installation instructions (with very specific screw directions) everything worked perfectly for me. The only trick to installing the cluster is to remove the protective layer from the acrylic parts. I ended up (carefully) using a knife to get underneath, then pulled the protective layer up until it peeled from the edge. I wish it had a pull tab or something to make this process easier, but I'm not sure how they could do that since these parts are cut from one large sheet. ***Other parts of my setup for those who want to replicate a known working configuration**** One of the reasons this setup is so easy is that there are no power cables going to the RaspberryPi devices. This cluster rack works with LoveRPi's compact Power-over-Ethernet (PoE) adapter, available on Amazon here: https://amzn.to/38NqkFC (Referral Link). Note. The "professional" version will NOT fit (I know because I tried), so be sure to order the compact version. The compact version WILL WORK, but it's VERY tight on the fans, so install with care. Important NOTE. The PoE Hat uses the GPIO pins listed in the iUniker instructions, but it comes with pins that you can connect to the same +5V and GND functions. If you're new to PoE devices, they require special hardware to make them work, but it's worth it. You need a PoE switch (or multiple PoE injectors) to make it work. I'm using a Netgear GC108PP device here: https://amzn.to/2UZ1FKn (Referral Link). There are cheaper PoE switches out there, but what I like about this device is that it's a managed switch, all ports are gigabit speeds, and it can power both my PoE and non-PoE devices just fine. The management part means it gets its own IP address and I can see stats on how much power my devices are using and how much data each one is using. It also notifies my email and phone if the device loses connection (or if the switch itself loses network). It was handy to let me know when my ISP was down and I was out. The final part of my particular setup that you see in the photo is the NAS. This NAS is no longer sold or supported but still works for my needs. This is a Netgear ReadyNAS NV+ with 4 disks in a redundant hot-swap RAID array. So if one of the drives fails, I don't lose any data. All my RP4 systems use different resources on this NAS as primary storage. This NAS (11 years old now) is a bit noisy for a desktop setup, so I was considering switching to a QNAP or Synology NAS. Synology is cheaper, but QNAP is much more powerful. I haven't tried either, so there are no affiliate links here - check them both out and see which one you like best. They both have their pros and cons. The RaspberryPi is a great device and I have no regrets or hesitation in recommending the iUniker Cluster Rack. If you've read this far, I hope this information helps you. If so, click on the "Useful" button. Thanks very much!
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