Asustor FLASHSTOR 12 Pro Gen2 FS6812X, 12 Bay All M.2 SSD NAS, AMD Ryzen Quad Core 2.3GHz, 16GB RAM ECC DDR5, 12 M.2 SSD Slots, Dual 10GbE Port, USB4 Type-C, Network Attached Storage (Diskless)

Works well overall: quiet, compact, and saturates 10GbE nicely over SMB.Two main issues:Slot Speeds: PCIe lanes are shared, so not all 12 M.2 slots run at the same speed. Expect bottlenecks across drives.Cloud Sync: The native cloud backup/sync app breaks constantly and requires restarts.Great for local flash storage, but cloud tools need work.

So far everything works good. It's expensive NAS but depends on your priorities. I needed something really quiet and I think this device achieves that. That being said you still can hear electronics but I keep it where I keep other devices (e.g. router) and it is not disturbing me at all (although it's other room where I watch movies.Functionality wise is not the same as mature SW from other vendors. However, it has everything what I need so can't complain. The only downside I do believe that NVMe heatsink should really be included and not sold separately.If something changes in next months of usage to be negative I will update my comment

全スロットNVMe SSDのみ対応なのでR/W性能は非常に高いです。ただ、高い製品の割に外装がプラスチックで安かったり、SSDの固定がツールフリーではありますが、固定具もプラスチックで安っぽく長期運用で使うには不安が残ります。各NVMeスロットのレーン数の分配も正直微妙で、10GbpsはPCIe Gen4 *2 以上であれば1スロットで速度が事足りるので、PCIe Gen4 *4スロットのレーンをPCIe Gen4 *1に割り当てて、PCIe Gen4 *2スロットを増やしてほしかったです。もしくは動的にレーン数を変更出来るようにしてくれる方が便利だと思います。高速ではありますが、価格には見合っていない品質と設計だと思います。

I bought the Asustor FLASHSTOR 12 Pro Gen2 FS6812X to consolidate all my scattered USB drives and multiple storage setups into one fast, centralised system—and it’s been a fantastic upgrade.Here’s what stands out:I installed six 4TB NVMe drives and set them up in RAID 5, giving me around 20TB of usable space with redundancy.12 x M.2 SSD slots offer massive potential for future expansion, and make this NAS totally silent—no spinning disks here.Dual 10GbE ports provide blazing-fast transfer speeds—file moves and backups are quick and effortless.The Ryzen Quad Core 2.3GHz CPU and 16GB ECC DDR5 RAM handle everything smoothly, even under load.The Asustor OS is clean and powerful with great tools for backup, media, Docker, and more.USB4 Type-C is a nice touch for external device access.Yes, it’s on the expensive side, but with these specs and performance, I think it’s worth every penny.If you’re looking for a high-performance NAS with tons of SSD storage potential, excellent speed, and a future-ready setup—this is it.

This is not a stable product, that you should buy, if you expect the thing to just work. It fails randomly in catastrophic ways and requires knowledge and experience of Linux to fix.After humming along for a few weeks the machine suddenly decided to shut down. After being turned on again all my files were gone. The disks were visible, but marked as "inactive" and there were zero options to recover this through the web browser.In the end, after logging in with a text terminal and spending two hours digging through configuration files I was able to re-activate my disks, by manually editing a configuration file, that the system had overwritten with incorrect information.I was replacing my home built NAS, because I wanted to get away from all the work involved in maintaining and configuring a Linux server, and now I have this junk instead, which is another Linux server that I have to maintain, because it's so poorly setup.

As someone working in the visual effects industry, I was genuinely excited to try the ASUSTOR Flashstor NAS. The hardware specs is impressive, 10GbE connectivity, and an SSD-only architecture make it an appealing choice for content creators and professionals dealing with large media files.The promise of performance, particularly for workflows involving sequential files like EXRs or image sequences, is what drew me in. ASUSTOR's marketing highlights this as being suitable for 4K editing and content creation, and I do believe the potential is there. However, after months of real-world testing across various system configurations, operating systems, and network environments, I encountered persistent performance inconsistencies.What I Tried:Multiple fresh installs of Windows (Home, Pro, Pro N, LTSC, and debloated variants)Swapping between ECC and non-ECC RAMComparing different 10GbE NICs, including the one recommended by ASUSTORUsing tools like iperf3 and AJA System Test to monitor throughputTesting with SMB, NFS, and even attempts at running alternative NAS OSesDespite my efforts, performance would sometimes drop inexplicably. Transfers of 20GB+ EXR sequences could take hours under certain conditions, and at times, AJA tests would stop responding altogether. While large single-file transfers worked well and could saturate the 10GbE link, the NAS seemed to struggle under workloads that involved thousands of sequential frame reads/writes—something very common in VFX and post-production.To be fair, ASUSTOR's support team was responsive and polite throughout, and I truly believe they care about improving the product. I also want to highlight that in many editing scenarios (e.g., ProRes or large single video files), this NAS might perform excellently. But for artists working with dense image sequences and multi-user render farms, your mileage may vary.Why two Stars?The hardware is solid and well thought out.The vision behind the product is admirable—making high-speed SSD NAS accessible to professionals and enthusiasts.The performance just didn’t match expectations in my use case, despite extensive troubleshooting.I'm giving ASUSTOR the benefit of the doubt that with firmware/driver updates, this unit could evolve into something exceptional.If you're a content creator working with large video files, this might still be a great solution. But if you're in VFX, 3D, or any workflow that relies on reading thousands of files rapidly (e.g., EXR, DPX, or image sequences), you may want to do additional research—or wait for software/driver improvements.I’m still rooting for ASUSTOR. The enthusiasm and ambition behind their products, and I hope future revisions will take feedback like this onboard.