Synology vs. QNAP 8x WD 16 TB Gold HDD?

Deal NASCompares Team,

My name is Tom, from Hungary and I need some help. I would like to buy NAS storage for secondary backup. (Primary is a HP device)
I would like to buy a best price/perfonmance NAS device
A: Synology DS1821+ with 2 m.2 SSD and B: one QNAP, but i don't know which is the best for us.
We would like to backup with rsync from more than 20+ servers.
Important:
0: High rsync performance
1: 8 dive bays (We need net 100+ TB, 7x16TB perfect) (More than 8 is good too.)
2: 2 x M.2 SSD write cache is good, because we have got tons of very small files (html, letters etc)
3: 1G bandwith enough now (the limit for small files is not the bandwidth). BUT: We can use 10G SFP+ link to our Supermicro Microblade Enclosure when we need fast recovery after a disaster. (Not first prioity, but more value resistant i think)

What do you think: which is the best NAS for us?

Regards,
Tamas Laszlok
CEO
NetMasters

Synology Active Backup for business is a very easy solution to backup your primary server. It can back up to the core of the system and be able to generate recovery disks for you to restore the systems when needed.NVMe cache indeed will help with repetitious backups tasks. DS1821+ would allow SFP+ upgrade, but you can also connect all 4 LAN ports and enable load balancing or aggregation to speed up the backups,DS1621xs+ would maximise 10GbE speeds, but it is fairly expensive.I hope this helps.