Disk layout for 8 bay NAS

[Armageus]

ALSO, as others have said, RAID 10 is NOT more secure than RAID6, don't buy into the hype You can loose 2 drives in RAID1- and loose everything, in RAID6 you can loose 2 drives safely without any data loss.

What hype? RAID10 is a better choice than RAID6 in almost all situations. Whilst it might not tolerate 2 drives failing (if they are in the same pair), it might also tolerate half your array failing
Statistically 2 drives in the same pair failing is less likely than any 2 drives failing (which with RAID6 would put your data in a very risky position).

Yes, the rebuild time is a lot more, and you are at risk when rebuilding, however the probability of loosing another drive is slim (Even with the extra load a RAID6 puts on the disks).

The extra load can and does cause failures - especially over the multiple hours (or days) that a RAID6 rebuild can take with todays large drives.

 

[SupraWez]

How about small SSD for system, 6 drive RAID 10 plus hot spare?

There are also two nvme slots available, I was going to use one for the system / initial volume and the other as a cache drive, that leaves all 8 slots for the main raid volume, either RAID10 or 6.

The NAS also supports additional nvme on a 10gb PCIe card so could add more if needed.

 

[SupraWez]

Also, if you are looking at encryption, remember that this will have a large impact on the performance. Most QNAP devices (and Synology), don't have dedicated encryption processors so the main CPU will be doing the work, this means that throughput will drop significantly for any encrypted volumes.

Just a quick look and the NAS has hardware encryption engine :-

With a hardware-accelerated encryption engine with AES-NI, the TVS-873e also provides unmatched encryption performance in its class (up to 960 MB/s with AES 256-bit full NAS volume encryption) to boost system performance, security, and ensuring the safety of sensitive business data stored in the NAS.

https://www.qnap.com/en-uk/product/tvs-873e

 

[Yaayuh!]

RAID-10, rebuild is fast reliable. Most of my arrays are RAID-10 + Hotspare now.