Disable MeltDown

#vi /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet nopti noibrs noibpb nospec nospectre_v2 nospec_store_bypass_disable"

Noatime for FS

#vi /etc/fstab

/dev/pve/root / xfs noatime,defaults 0 1

Update the APT source repo for “No Subscription” repo

#vi /etc/apt/sources.list.d/pve-enterprise.list

#deb https://enterprise.proxmox.com/debian/pve stretch pve-enterprise
deb http://download.proxmox.com/debian/pve stretch pve-no-subscription

#vi /etc/apt/sources.list.d/ceph.list

#deb https://enterprise.proxmox.com/debian/ceph-quincy bookworm enterprise
deb http://download.proxmox.com/debian/ceph-quincy bookworm no-subscription

Adjust Swappness

#vi /etc/sysctl.conf

vm.swappiness = 10
fs.inotify.max_user_watches = 524288
vm.dirty_background_ratio = 5
vm.dirty_ratio = 10
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

Disable Lid switch to Sleep Mode

#nano /etc/systemd/logind.conf

HandleLidSwitch=ignore
systemctl restart systemd-logind

Enable Jumbo frame

#nano /etc/network/interfaces

iface enp4s0 inet manual
mtu 9000
auto vmbr0
iface vmbr0 inet static
address 192.168.1.210
netmask 255.255.255.0
gateway 192.168.1.1
bridge_ports enp4s0
bridge_stp off
bridge_fd 0
mtu 9000

Change TCP/IP Congestion Control algo

modprobe tcp_bbr
echo "tcp_bbr" >> /etc/modules-load.d/modules.conf
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
#Save the settings
sysctl -p
#Check the settings
sysctl net.ipv4.tcp_available_congestion_control
sysctl net.ipv4.tcp_congestion_control

Provision LVM Thinpool 
pvcreate /dev/sdb
vgcreate xxxxx
lvcreate -v -L 465G -T hdd/hdd

################################
# pvecm expected 1

# service pve-cluster restart