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Proxmox Support Forum

[SOLVED] - Github Auth for Mirrors-Kernel Repo? [Automation] Mass migration tool for MS Win11/Server Proxmox GUI hang - not response is it possible to reject or quarantine spam based on conditions I set ? The PVENode task list in PVE9 is partially obscured due to the terminal font being too large. About 100% error reporting due to pveproxy.service hooks Kubernetes overlay networking breaks when upgrading from PVE 9.1 to PVE 9.2.3 Zentraler Speicher No space left on device Combine datastore and direct file archival to tape Kernel panic VFS: Unable to mount root fs on unknown-block (0,0) sobald ein 7.x Kernel verwendet wird. How to migrate disk of a VM from one ZFS to another Windows Server 2025 fails to boot after PVE 9.2 / Linux 7.0 Kernel upgrade Cannot Install Proxmox on T610 Poweredge with H700 PERC card sdn Config. gateway not reachable How to safely change domain/FQDN? Welche Filterquote erreicht ihr? 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VMs nach Umzug von VMware nicht mehr gleich performant
invalid@exam · 2026-06-16 · via Proxmox Support Forum

Hallo zusammen,

seit ca. einem Monat laufen unsere VMs in einem neuen Proxmox-Cluster. Grundsätzlich läuft alles stabil, allerdings habe ich das Gefühl, dass einige VMs seit der Migration von VMware ESXi auf Proxmox nicht mehr ganz so performant sind wie vorher.

Vorher liefen die VMs auf ESXi 7 mit lokalem Storage pro Host. Jetzt laufen sie auf einem Proxmox-Cluster mit HA und Ceph-Storage über ein separates 10-Gbit-Glasfasernetz.

Die Hardware hat sich eher verbessert als verschlechtert (Xeon Gold 6146, inzwischen sogar mit zweiter CPU), CPU-, RAM- und IO-Auslastung sehen meiner Meinung nach völlig unkritisch aus. Bei den CPU-Typen habe ich bereits mit x86-64-v2-AES und x86-64-v3 getestet.

In den Screenshots sieht man den früheren VMware-Host, den aktuellen Proxmox-Node sowie eine der betroffenen VMs.

Habt ihr Ideen, wo ich noch ansetzen könnte? Gibt es typische Stolpersteine nach einer VMware→Proxmox-Migration oder könnte allein der Wechsel von lokalem Storage auf Ceph bereits so einen Unterschied machen?

Und soll ich dann lieber auf HA verzichten und als CPU-Typ Host versuchen oder wird das nichts bringen.

Vielen Dank schon mal für jeden Tipp!

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