FreeNAS stops sending/receiving data from Proxmox NFS

[hawaii]

Hello,

I'm trying out FreeNAS to host our VMs on it through NFS. Here is the components details :

• Motherboard make and model
  • Dell R640
• CPU make and model
  • Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz
• RAM quantity
  • 128 GB
• Hard drives, quantity, model numbers, and RAID configuration, including boot drives
  • 8 SSD (2 for FreeNAS, RAID1, 6 configured as RAID-Z2 for the data) Micron 5100 Max
• Hard disk controllers
  • PERC H730P Mini (Embedded) firmware version 25.5.6.0009 (HBA mode)
• Network cards
  • NetXtreme E-Series Advanced Dual-port 10Gb SFP+ Ethernet Network Daughter Card

Things were going well at the beginning, however after few hours of usage, all disks are at 100% of their usage and this led to being not accessible to the proxmox until it finishes its jobs... which is a vicious circle because of course Proxmox tries to catch up his work.

systat -vmstat :

Evernote

www.evernote.com

Would there any tips you would recommend in this case (except changing the RAID type and disks... if possible).

Thanks for your hints!