QNAP TBS-h574TX-i5-16G-US 5 Bay High-Performance E1.S All-Flash NASbook with Intel® Core™ Processor, Thunderbolt 4 and 10GbE (5G/2.5G/1G/100M/10M) Network Connectivity (Diskless)

Owning 4 other QNAP and multiple QNAP switches, this NAS is easily one of the best in terms of speed, compact size, weight, and overall quality for a very reasonable price. The unit is very quiet and cool to the touch. The unit arrived in pristine condition with packaging and superb construction reminding me of Apple laptops. The trays offer m.2 compatibility prior to transitioning over to E1.S drives. Memory is not upgradeable. The unit has been completely stable with no crashes or random reboots. Overall, I am very impressed with this new product by QNAP. Good job QNAP team.

I purchased the i5 version of this, along with 3 x 8TB WD Black SSDs with integrated heat sinks. Prior to this, a 16 year Synology user through several generations. The drive brand-lock-in drove me away.The Qnap is similar in many ways, a bit less polished - Synologies U.I. is nicer and crashes less - but the hardware seems top notch. The Qnap does make a LOT of warning BOOP sounds, with no alerts associated. And the Thunderbolt functionality, when used with QFinder, seems to reboot the Mac roughly daily; this isn't a problem if not using Thunderbolt or seemingly if not using QFinder, although I haven't had it long enough to be sure.The Surveillance setup is about the same power as Synologies, comes with eight instead of two camera licenses.My big gripe is, they make a big deal out of only using approved or certified drives. But they don't have any 8TB certified drives. Technically they list the Exascend EXPE4M7680GB, but that's not available anywhere and is $1800 in a world of $600 8TB drives. I wrote them about this, got back emails from an actual human - who merely repeated that party line so much I presume he's channelling an older AI. Oh well... I gambled on the WD Black SN850P drives, and they're working fine.Doing a mass copy to load data on, it did get a bit warm - you NEED those heat sinks on the SSDs. I added a cheap USB fan and all is well.

I got this as an Amazon return for almost half the new retail price. It is very fast via the 10gb interface, of which I wish there were more of because of iSCSI for Proxmox and VMWare. Thunderbolt is very fast and reliable. The only complaint I have is that good NVME flash drives are not more affordable. I only have 5 4TB WD SN850Xs in this thing. I would love to put 5 8TB WD SN850Xs in this. (currently selling for $599.00 each during Black November) but that would cost around $3300.00, which I could do, but still too rich for my taste. I read other folks reviews in the QNAP forums and it seems everyone does RAID 5 on this, which give up way too much expensive storage space, slows the array down and increases write amplification. SSDs a very reliable, but even if I had RAID 5 configured on this or anything else, it is still no substitute for a backup.

It is GREAT to have a super fast NAS mass storage unlike the relatively very slow Synology NAS servers I already have., This SSD QNAP can act at Thunderbolt speeds due to he RAID SSD (5 4TB SSD drives) and connect this SSD 16 TB monster fast NAS to my Mac Studio with a Thunderbolt cable. It screams fast. Files copy from this NAS to my Mac SSD at 1.5 GigaBYTES per second. I can store ALL of my active FCPX projects on it. So convenient. I also back up to the Synology NAS drives at night by copying.

This is a fine product, with all of the niceties that we've come to expect from QNAP, and, surprisingly attractive industrial design. For full functionality, you should connect it via Ethernet in addition to Thunderbolt even if you won't be accessing it via Ethernet. That way it can get FW updates and access the network time servers.I'm getting wirespeed transfers for large files over Thunderbolt, both up and down. There have been complaints about fan noise. My unit is quiet except for sustained wirespeed writes of over two minutes. Then the fans come on. They're noisier than the big slow fans that are probably in your workstation, because they have to fit in the small case. I don't consider it a problem.The sleds are slick, as are the M.2 adapters, and QTS Hero is a great OS.Addition after several weeks of usage:There are two big problems.The less severe is the fact that rebooting the NAS drops the Thunderbolt connection. The computer needs to be rebooted to reestablish it. This is not the case with my other Thunderbolt devices.The bigger issue is heat management. With 5 Corsair 8 TB M.2 drives with QNAP's heat sinks added, the SSDs overheat at the end of a 350 GB transfer at 1 GB/s.

I recieved this, installed my drives and set it up on my network. Eventually it asked to update which I allowed. Unfortunately it never came back up after the update started.Thinking this was a fluke I returned it and bought another which arrived a week later. The same thing happened.QNAP support said that it could only be fixed by RMA. They don’t have any way to reflash it locally.So be aware about a company that doesn’t test their updates and requires you to send it in at your expense when they break it with a buggy update.Updates:It came back from RMA scratched and with blood on it 🤢