WinSAT + performance measurements
Source: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc770542(v=ws.11)
Large packet loss in the guest OS using VMXNET3 in ESXi
Source: https://knowledge.broadcom.com/external/article?legacyId=2039495 DETERMINE IF VIRTUAL NIC BUFFERS COULD BE INCREASED: 100663349 2189023:VMNAME.eth0 all(1) DvsPortset-2 3821.41 349.01 11970.00 5663.45 5.34 123.00 0.00 0.00 vsish -e get /net/portsets/DvsPortset-2/ports/100663349/vmxnet3/rxSummary | grep “1st ring” 1st ring size:512 # of times the 1st ring is full:276 […]
Bitlocker asks the Recovery key at every boot
It happened due to Group Policy and Legacy boot in BIOS in my case. To fix:
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.