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All Ceph packages should be available to install, even with the Proxmox Ceph repos :). Some things might not work, but that is in many cases because Ceph deployed on Proxmox VE is not using the Ceph Orchestra method, which prohibits a few things that require it. There is also a Windows client...

Option A with a bind mount should definitely work: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_bind_mount_points But doesn't CephFS come with a NFS Ganesha server? https://docs.ceph.com/en/latest/cephfs/nfs/ That might work, or, alternatively, depending on your clients, mount CephFS...

Have you tried setting the cache option for the individual VM disks to writeback? That should help in non-sync write operations and uses the generic qemu disk cache options instead of a Ceph specific one.

A lesser know option is to configure the pveproxy service with ACLs or defining on which interface it listens to (default all): https://pve.proxmox.com/pve-docs/pveproxy.8.html#pveproxy_host_acls https://pve.proxmox.com/pve-docs/pveproxy.8.html#pveproxy_listening_address

Grundsätzlich: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#pvesdn_setup_example_vlan Unter Datacenter -> SDN: Neue VLAN Zone erstellen, Namen geben, die grundlegende Bridge definieren welche in deinem Fall wohl vmbr0 sein wird. In einem Cluster muss die Bridge auf allen Nodes...

Ich persönlich bevorzuge mittlerweile die SDN VLAN Zonen. Damit bekommen die Interfaces klingende Namen und ich kann dann bei den Gästen anhand derer einfach auswählen, in welche Netze diese kommen sollen. Ich muss mir nicht immer merken welche VLAN Tag wofür ist, und vertippe mich beim anlegen...

Für VLANs gibt es (zu)viele Möglichkeiten wie man das umsetzt. Wenn du weiter VLANs direkt in den NICs der Gäste setzen willst, kannst du auch versuchen, bei der vmbr0 die "VLAN aware" option zu setzen. Dann muss da nicht ein extra {nic}.{vlan} Interface erstellt werden. Wenn du pro VLAN...

This is a special type of storage used for the tool to import VMs from VMware https://pve.proxmox.com/wiki/Migrate_to_Proxmox_VE#Automatic_Import_of_Full_VM

Hmm, any plugins installed that might be a problem? I just tested it with a fresh Vivaldi 7.4 on Linux (.deb) on a Proxmox VE 8.4.1 and was able to type as expected into the TOTP field or recovery key.

What is your storage configuration? Is this an iSCSI storage? If so, is the "Use LUN directly" option enabled? In most cases, when you export one large LUN you would disable that option and create an LVM with the "shared" option enabled on top of that LUN. And if you have multiple connections...

? With the 8.3 release it is now possible to import OVA/OVF directly via the GUI. https://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_8.3

All those sub-datasets are disk images for VMs right? Those are volume datasets (aka zvol). They are block devices and show up in /dev/zvol/{pool}/... as they are not regular files. So from what I can tell, the output of zfs list looks as expected.

A `zfs list` would be interesting to know more. Please paste it in a code block (tools of the editor) to be readable.

How is the system installed? If ZFS is installed as the root OS you have some more options. Can you add the replacement NVME as an additional disk or do you need to remove the current OS NVME to make space?

The dance how to get an existing Windows VM to boot from VirtIO drivers is explained here: https://pve.proxmox.com/wiki/Paravirtualized_Block_Drivers_for_Windows

just don't add that Proxmox VE instance to the cluster and keep it separate! I personally use that combination to run the QDevice in a separate LXC container on a physical PBS host.

Someone else might have some ideas on how to protect an Exchange server. A VPN would probably be the safest approach, but also cumbersome for the end-users. Otherwise, you will have to expose the web interface, IMAP, EAS and whatever client protocol you need, to the internet in some way more or...

No, the PMG is only in between the sending and receiving mail servers: https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#_easy_integration_into_existing_email_server_architecture Access of your users to their mailboxes on your exchange server is not going via the PMG at all. That's what I...

PMG is intended to be part of the server<->server communication. It does not handle any access of clients to their mailboxes via protocols like IMAP,POP3,MAPI,EAS,….

What about installing Proxmox VE side by side bare-metal and run these other services in VMs that way? It is one way to run PBS: https://pbs.proxmox.com/docs/installation.html#install-proxmox-backup-server-on-proxmox-ve You would have to go the other way and add the Proxmox VE repos and...