Exchange 2019 + Error 500 OAuth certificate
If you delete expired certificates be ready for getting error 500 OAuth …. because this self-signed certificate was a critical point. If that happen you have to re-create a certificate or assign an existed one. The certificate will be propagated to all the Exchange servers.
Network speed+ SSD/HDD
10GbE can be saturated by a single SAS3 SSD, two SAS2 SSDs, or 6 HDDs (assuming 200MB/s/drive). 5GbE can do about 3 HDDs, while 2.5GbE will bottleneck on just two HDDs. When you get into NVMe, you’re looking at saturating 25GbE with a single Gen3 drive.
Proxmox + mount a qcow2 disk image
Step 1 – Enable NBD on the Host Step 2 – Connect the QCOW2 as network block device Step 3 – Find The Virtual Machine Partitions Step 4 – Mount the partition from the VM Step 5 – After you done, unmount and disconnect