Tracking down noisy neighbors

Good post by Frank Denneman (thank you)

A big part of resource management is sizing of the virtual machines. Right-sizing the virtual machines allows IT teams to optimize the resource utilization of the virtual machines. Right sizing has become a tactical tool for enterprise IT-teams to ensure maximum workload performance and efficient use of the physical infrastructure. Another big part of resource management is keeping track of resource utilization, some of these processes are a part of the daily operation tasks performed by specialized monitoring teams or the administrators themselves. Service Providers usually cannot influence the right sizing element, therefor they focus more on the monitoring part.

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VMware VSAN for ROBO Two Node 10 GbE cross-connect support

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Good post by Vladan Seget (thank you)

I somehow ignored this information but I think that it’s very useful to share, especially if you’re navigating the SMB or very SMB sector. In fact VMware VSAN for ROBO Two Node 10 GbE cross-connect support. So you have the possibility to cross connect ROBO nodes, via low cost 10GbE option and have a great performance because you’ll have dedicated VMkernel interface for VSAN traffic.

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Musing: Could We Replace Ethernet With PCIe?

Good post by Stephen Foskett (thank you)

Greg “EtherealMind” Ferro recently “mused” that it might be a good idea to replace PCI Express (PCIe) inside servers or rack-scale infrastructure with Ethernet. But this seems to be the exact opposite of the direction the industry is headed. Rather than replacing PCIe with Ethernet, companies like Intel seem set on replacing short-range Ethernet (in rack-scale systems) with PCIe!

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How Many Hosts In An VLAN or IP Subnet and Why ?

Good post by Greg Ferro (thank you) – check out the comments too

It is common to allocate /24 or /22 subnets to a single VLAN but William writes to ask whether is related to broadcasts. What is the best subnet size for VLAN allocation and why ? The answer isn’t what you think.

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