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Well..., yes. As soon as one of two nodes is unavailable you cannot administrate the single survivor - it will deny everything with "no quorum". Just try it! There are workarounds for disaster recovery: "pvecm expected 1" will probably work. But that's meant to be a workaround, not a solution...

Just a few ideas, this is not a comprehensive list by far: turn power off / shutdown pull the power cord - yes, I mean it check all cabling: pull and reseat all connectors - on both ends turn on... Only if lsblk lists all devices (except one single device because RaidZ1) there is any chance to...

Just guessing: make sure that name resolution works correctly. Usually by a full blown DNS server (possibly overkill) or (simpler) by maintaining a consistent /etc/hosts, containing all host names and addresses of all hosts. That file should be identical on all hosts. "ssh nameofpve1" + "ssh...

You could run systemctl stop proxmox-backup-proxy.service proxmox-backup.service... and no backup is possible anymore, as far as I can see. For PVE (and active HA) there is ha-manager crm-command node-maintenance enable pveX . And PVE itself consists of multiple services, I am not sure which...

Ja. Nein. Ein erfolgreiches Verify bestätigt, dass das Backup unverändert und vollständig zur Verfügung steht, also vom PBS vom Massenspeicher gelesen werden kann. Während der Sicherung wurden Checksummen berechnet, die auch dauerhaft abgespeichert werden. Beim Verify werden die Daten...

Well, I (often) emphasize "my" to state clearly that it is not a neutral statement, resulting from of a large field study, but my personal one. We all try to give some helpful hints to the readers of this forum, I believe. And it is normal that recommendations from different persons are...

Im ersten Post sind Gigabit angegeben...

Leider habe ich keinen konkreten Hinweis; du erwähnst nicht, ob du diese Seiten bereits kennst: https://pve.proxmox.com/wiki/Windows_10_guest_best_practices https://pve.proxmox.com/wiki/Advanced_Migration_Techniques_to_Proxmox_VE#HyperV Viel Erfolg!

Yes, a lot of setups will reach end of life before a cheap (non-PLP) SSD may die. At least you may hope for that. To increase the reliabilty drastically my rule is to use redundancy and to use "with-PLP" devices. Disclaimer: I do not follow my own rule everywhere, for the usual reasons...

I have tried to test it - and it works as you describe :-)

As stated I am not a Ceph specialist. I do not understand what you want to achieve with this construct. And because I am curious I write this reply ;-) In my understanding the usable space is up to 7/12 = 58.3 percent. Right? The "m=5" makes five calculated strips to be present on five OSD -...

Sicher? Das Angebot war gelegentlich "ausverkauft" und wurde mehrfach erneut ermöglicht. Momentan enthält https://www.tuxis.nl/en/proxmox-backup-server/ den Satz "You can choose from a free account for home use or testing, ..."

Ja, die Stromkosten sind in .de echt... ärgerlich :-( Ich behelfe mir (im Homelab) durch Kaskadierung. Es läuft nur ein einziger PBS 24*7. Der ist schnell, hat "nur" SSDs (keinerlei HDD), nur begrenzte Kapazität und somit nur eine geringe Aufbewahrungszeit. Sekundäre PBS schalten sich...

Wenn man "nur" Space einkauft, muss man ja einen PBS selber aufbauen, lokal oder remote. Das treibt wiederum die Komplexität in die Höhe. Gerade im Desaster-Recovery-Fall, will ich aber, dass das Backup einfach verfügbar ist - ohne dass ich erst aufwändig die lokalen Voraussetzung aus dem Boden...

Yes! While ZFS replication is not "shared" in the classic sense, it qualifies for this use case. Of course you lose the data from the last replication point-in-time to now. If that's acceptable depends heavily on your use case. In my homelab I am fine with it. For most commercial setups it is...

Whatever you do with this conglomerate: a CACHE does help only if you read the same data multiple times. And ZFS has its own optimized cache already in place: the Adaptive-Replacement-Cache "ARC" is always present - in RAM. (( The other often mentioned thingy is a SLOG which optimizes the write...

Yeah, that's no secret :-) Unfortunately this does not mean, that I am a ZFS expert..., there are too many internal details I do not understand. Well, the most important point is that there is no automatic re-balancing. Already stored data will stay where it is. (For datasets there is "man...

Dropping ZFS will make you lose the guaranteed integrity of ZFS, IOPS (...are low for Raid5), technically cheap snapshots, transparent compression, zfs send/receive, ..., ... And... easy extensibility. Where is your problem? (( Yes, you may add a mirror (of two disk) to that pool, which has a...

I can not prove/verify this, but I would expect it. While Ethernet can operate bidirectional with full speed by definition, some operations may influence each other: received data must get pushed from the circuit board through PCIe into the system RAM and data-to-be-send travels the same...

Well..., this is one rare opportunity where I would try to use PCI pass-through of the physical NIC. This eliminates the virtualization part and should get you the maximum possibly (nearly native) performance. Disclaimer: not tested!