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Check the docs, the no-subscription repo doesn't use https but plain http. deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription

The subscriptions are one subscription per server . For each server you need to check how many physical CPU sockets are in use. If you go to the Summary panel of each node, it will tell you the CPU info and then at the end of that line in brackets how many sockets are in use. If it is "(1...

Isn't ZFS over iSCSI basically ZFS on the storage host where PVE manages the ZFS volumes and snapshots via SSH and exports them as iSCSI LUNs? Not ZFS on top of iSCSI LUNs?

If data that needs to be read is in the cache/RAM (ARC), then a trip down to the disks is avoided. If you have some monitoring, it can fetch stats on how often the ARC could not satisfy a read operation. arcstat On some of my servers with 128 GiB or RAM, the ARC will vary in size from 40 to 62...

Grundsätzlich: mit welchem alten Kernel gehts noch? Du könntest in dem Fall aber auch gleich direkt ein Backup mit PVE Bordmitteln erzeugen. Entweder richtest du eine externe Platte als Storage ein, oder lässt vzdump direkt laufen. Dann kannst du nämlich --dumpdir Parameter verwenden um die...

Is your DNS provider listed in the available plugins for the DNS challenge? Validating the domain via a DNS challenge would be a bit easier in this situation :)

are the new disks at least exactly the same size or a bit larger? even if they are smaller, they seem to be installed with ZFS for the root filesystem. Check out this blog post, it handles moving the OS to smaller disks, but the overall process should also give you enough of an idea if the...

Try running the fio benchmark time based for at least 10 minutes (600 seconds) and check the results again. Consumer SSDs are good as long as they can cache, but one the cache is full, performance will drop. Testing for that long should make sure, that the SSD is getting its cache full. Then...

How fast is the network to the PBS? Do I understand it correctly, that HDDs are used for the PBS storage? Where there other jobs going on while the restore was happening? Other backups, garbage collection or verify jobs? Since the backups are split into many small chunks, for VMs, 1 chunk per 4...

Do you see an error if you run rbd ls? There might be an image that is missing and it might be shown in the error message. Also, please paste config files and such infos inside tags. That makes reading them a lot easier :)

For Windows VM consider using RDP and enable Audio. RDP can pass through quite a bit, like local folder, printers and RS232 ports ;)

Vor dem Migrieren solltest du AFAIK definitiv Bitlocker deaktivieren da der Key im TPM auf dem Motherboard liegt. Den bekommst du nicht wirklich in die VM migriert.

Die PVE Version ist mittlerweile schon ziemlich alt und ein Upgrade auf die aktuelle wäre anzuraten. Es ändern sich Dinge, wie du hier zum Beispiel bemerkt hast. https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0 :)

du könntest zuerst auch ein apt full-ugprade --download-ony machen. Dann sollten alle Pakete schon mal heruntergeladen sein. Grundsätzlich kannst du die Gäste während des Updates schon laufen lassen. Irgendwann braucht es halt den Neustart.

This blog post looks pretty much like what you want to do.

Do you do backups with Proxmox VE itself, or with some other backup solution within the VMs? Overall, which network is used, from a Proxmox VE view, depends on the IP addresses configured. If you want to separate it, for example, have backups on the 10Gbit network, then you need to use...

Take a look at the qm disk import command (man page). This way you can point it to the source image and specify the target VM and storage. Converting the disk image to the correct format is done on the fly.

Hmm... if the memory seemed okay, and quite a few of the disks showed problems, it could have been a few things: - disk themselves - controller - cables to the disk - too old BIOS / firmware ... I hope it won't happen on the new machine :)

A bit of nitpicking first ;) Proxmox products are licensed under the AGPLv3. What you are talking about are the subscriptions :) You should be able to move the subscription keys to the new cluster. But they need to be renewed as they are bound to the server IDs. That should be possible in the...

Yes, using the VM replication feature in combination with HA is a possible way. The shortest possible replication interval is 1 minute: */1. The downside is, that in case of a HA recovery, the VM will be accessing the disk image with the data since the last successful replication. The upside...