QNAP TVS-h674T-i5-32G-US 6 Bay High-Speed Desktop NAS with Intel 12th Gen Core i5 6-core CPU, 32GB DDR4 Memory, Thunderbolt 4 and 2.5GbE connectivity (Diskless)

I added four 6TB WD drives https://www.amazon.com/gp/product/B0792GSD6N/Upgraded the memory two 32GB chips https://www.amazon.com/gp/product/B07YBW84K9/and added two 1TB NVMe's https://www.amazon.com/gp/product/B09JHL33X7This system is great. It flies, the transfer speeds are great. I'm using it mainly to stream/transcode my plex library. Secondary for shared file storage in the house.The instructions that come with it are poor, but there's plenty of youtube videos you can watch.Upgrading the hardware was simple if you've done any pc upgrades in the past. Cover comes off, pull the drive cases out and you can reach the NVM slots and the memory slots.

Do not buy this unit from Qnap. Mine failed 2 months out of warranty. Bad motherboard and they want 750 plus shipping to fix it. This is NOT unusual with this model. Do a search for the model number and "fail to power on" and you will see this is the biggest issue reported on qnap's forums and reddit. Qnap has not been helpful. I will not buy another Qnap unit again. Synology now.Update:. Qnap has agreed to repair the unit under warranty and seems to be on track now. I would have given 5 stars to the unit normally. I still update this when I get and test the unit and perhaps go up to the 5 stars that the performance deserves.Update: The product performance is very good. They have now agreed to repair it under warranty. Based on this, I can recommend it.

Seemed to be great, but then it failed to boot after upgrading the firmware that Qnap recommended I upgrade to. BIOS: Q012AT13 checking memory was the error on the LCD front panel. No amount of resets, removing HDD's, power etc would bring it back. Contacting Qnap, they said I had to ship it back to them and pay another $700 to get them to repair it. The server has been connected to a UPS in a temp controlled server room for its' whole lifespan. That is not very reliable.If I'm spending $2,000 on a NAS before HDD's, it should last more than 3.5 years. Not recommended unless you're deeply invested in Qnap already.

This is my first NAS. It was fairly easy to set up following the quick guide, but I did hit some setup bumps along the way. For those who may buy this unit, here are some things to know so you don't make the same mistakes I did:Hardware Warnings:1) If you are buying the x72XT, make sure you also own a right angle screwdriver. If you want to put M.2 cards into the x72XT, you are going to need to get that thunderbolt card out. There is maybe an inch clearance between the thunderbolt card and the bracket above it.2) Also if you are going to put in M.2 cards, make sure you are ready to remove whatever label the manufacturer has put across the chips. Its kind of tough buying a new NAS, 2 new M.2's, and hard drives, and the first thing you need to do before you do anything is take a blade to the top of your M.2 card.3) Also on the M.2 cards, be careful if you want to use it as a read/write cache. If you start dumping a bunch onto the NAS the M.2 heat warning will pop up, even with their heatsinks on the controller. My recommendation would be to have them as a read cache until you have fully populated the NAS with whatever you are backing up, then change it to read/write after, if you want read/write that is.Setup Warnings:4) There is a guided setup which is more or less intuitive. Takes a bit of time to set up, and then prompts you to log in. It populates the usename with the name it gave the NAS (like NAS8384). You need to change that to admin. I didn't realize that; just kept entering the password I had given it and kept being told it was no good. Had to reset the unit and start again.5) If you are setting up the Plex app, make sure you do it from the non-thunderbolt connection. The x72XT gives you 2 IP addresses, 1 for thunderbolt and 1 for network. The Plex setup will fail if you set it up while under the thunderbolt connection - it can't find that server. That was a reset for me too :(Other6) Your may find all your appstore icons disappear. This is actually an ad-blocker problem, not a QNAP problem. Clearing the cache worked for me on Firefox, and Edge worked anyway. Still can't get them back under chrome.7) As QNAP will remind you, if you want to use their Q-Cloud to access your NAS from elsewhere, remember that all data passes through their servers. Something to think about.8) Tech support has email support and can even do a live diagnosis, but none of that in a truly timely fashion. I find the qnap forum to be the more likely place to get prompt answers. After all, if you are trying to set up a $1500 NAS, which has $1600 of hard drives, $400 of M.2's, and what not, waiting X number of business days is not really going to be your preference.So 4 days in, I have it set up and mostly loaded. Would have taken 1 day had I known the above. Otherwise, it seems like a good unit, if not a little noisy when a bunch of hard drives are accessing.

Needed to update a QNAP TS-869Pro I purchased in Sep 2014 and operated flawlessly for 8yrs with only two HD failures in that entire span of time. Had to go QNAP again so bought what I felt was the functional equivalent with modern tech upgrades. Upgraded the RAM immediately to 32GB, installed two 1TB nVME drives for caching, and loaded with 16TB drives. In addition to NAS, operates as a Plex Server. Flawlessly delivers 4K content throughout the house and to children away at college.