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Tag: Server

Cisco UCS C200 M2 with Windows Server 2008 R2 and Windows Server 8 #HyperV

Cisco UCS and Hyper-V Enable Stateless Offloads with NVGRE

As I already mentioned I did several Hyper-V and Microsoft Windows Server projects with Cisco UCS. With Cisco UCS you can now configure stateless offloads for NVGRE traffic which is needed for Hyper-V Network Virtualization.

Cisco UCS Manager supports stateless offloads with NVGRE only with Cisco UCS VIC 1340 and/or Cisco UCS VIC 1380 adapters that are installed on servers running Windows Server 2012 R2 operating systems.

To use this you have to create Ethernet Adapter Policy, and set the Configuring an Ethernet Adapter Policy to Enable Stateless Offloads with NVGREin the Resources area:

  • Transmit Queues = 1
  • Receive Queues = n (up to 8)
  • Completion Queues = # of Transmit Queues + # of Receive Queues
  • Interrupts = # Completion Queues + 2

And in the Option area set the following settings:

  • Network Virtualization using Generic Routing Encapsulation = Enabled
  • Interrupt Mode = Msi-X

Make also sure you have installed eNIC driver Version or later.

For more information, see http:/​/​​c/​en/​us/​td/​docs/​unified_computing/​ucs/​sw/​vic_drivers/​install/​Windows/​b_​Cisco_​VIC_​Drivers_​for_​Windows_​Installation_​Guide.html.

VMware ESXi enable SSH

Enable SSH on VMware ESXi 5.5

I already wrote how you can enable SSH on a VMware ESXi 5.1VMware ESXi 5.0 and VMware ESXi 4.1. This little guide shows you how you can enable on a VMware vSphere ESXi 5.5 box. As before for the other version it is pretty easy. This allows you to remote troubleshoot your VMware ESXi host and also coping files on your server.

On the start screen press F2 to “Customize System” and login with your administrator or root account.

Enable SSH on VMware ESXi 5.5

VMware ESXi 5-2014-01-11-17-29-50

After the login select Troubleshooting Options on the System Customization page.

VMware ESXi Troubleshooting options

Now you can enable SSH on your ESXi 5.5 server, and you can connect via your favorite SSH client.

VMware ESXi enable SSH

If you want to enable SSH on your VMware ESXi host directly from the vSphere client you should have a look at the following post: Enable SSH on VMware ESXi 5.5 via vSphere Client.

Server Posterpedia

Microsoft Server Posterpedia Windows 8.1 App just updated

Some days ago Microsoft released some of the new architecture poster for Windows Server 2012 R2 Hyper-V. Today Microsoft released an update in the Windows App Store for their Server Posterpedia App including the new Hyper-V 2012 R2 posters and some design changes.

Server Posterpedia is an interactive app that uses technical posters as a reference for understanding Microsoft technologies. This app includes all the reference posters from different Microsoft Server Technologies such as Windows Server 2012 Hyper-V, Exchange or Windows Azure. The great thing about this App, you can not only checkout the different posters and zoom in, if you click on a specific topic for you get directly linked to the right TechNet article. This can help find some TechNet references really easy and fast.

You can get the Server Posterpedia App in the Windows Store. and you can get some more information about this awesome App on my blog: Microsoft Server Posterpedia Windows 8 App or on

How to Install VPN on Windows Server 2012

Windows Server 2012 RC Logo

This post should show you how to install a VPN Server on Windows Server 2012. This post covers a VPN server for a small environment or for a hosted server scenario. This post is note made for enterprise deployments. If you want to run a VPN solution in your enterprise you should definitely look at Direct Access which is much easier to deploy in Windows Server 2012 than in Windows Server 2008 R2.

For a VPN server on Windows Server 2008 R2 check this post: How to Install VPN on Windows Server 2008 R2

  1. Install the role “Remote Access” via Server Manager or PowerShell

Cisco UCS C200 M2 – Microsoft Hyper-V

Cisco UCS C200 M2 Hardware

For my Lab I could buy some Cisco UCS C200 M2 rack servers. Of course I am running Hyper-V on my lab servers to get the most out of it, and I am very happy with the performance of the Cisco UCS standalone servers.

C200 BIOS Settings


But still I did some changes in the BIOS settings to get some more performance.

Processor Configuration:

  • Intel Turbo Boost Technology: enabled
  • Enhanced Intel Speedstep Technology: enabled
  • Intel Hyper-Threading Technology: enabled
  • Number of Enabled Cores: All
  • Execute Disable: Enabled
  • Intel Virtualization Technology: enabled
  • Intel VT for Directed IO: enabled
  • Intel VT-d Interrupt Remapping: enabled
  • Intel VT-D Coherency Support: enabled
  • Intel VT-d Address Translation Services: enabled
  • Intel VT-d PassThrough DMA: enabled
  • Direct Cache Access: enabled
  • Processor C3 Report: disabled
  • Processor C6 Report: disabled
  • CPU Performance: High Throughput
  • Hardware Prefetcher: enabled

Memory Configuration:

  • NUMA Optimized: enabled

Cisco UCS C200 M2 – Cisco Integrated Management Controller (CIMC)



The first things I tried with the new Cisco UCS C200 M2 servers was the CIMC (Cisco Integrated Management Controller). CIMC is the remote out-of-band management solution (IPMI) provided with Cisco servers, it’s basically the same like HP iLO or Dell DRAC.

One of the biggest advantages is that CIMC is included for free, so there is no extra license you need for extra features like KVM or stuff like that.

After working some hours with the CIMC I was really happy, no problems at all everything worked as expected. From the design it’s like the Cisco UCS Manager but better ;-). I think it is much easier to use and much faster (it’s not Java).


  • Web based front-end
  • KVM and Virtual media
  • Change BIOS Settings
  • Active Directory connector
  • SNMP
  • IPMI (Very interesting with the Bare-metal deployment in SCVMM 2012)
  • SSH
  • Health Monitoring


Cisco UCS C200 M2 – Hardware

Cisco UCS C200 M2 Hardware

Today my two new virtualization nodes from Cisco arrived. For my Microsoft Hyper-V lab I needed two new nodes and I got a really good offering for two Cisco UCS C200 M2 High-Density Rack-Mount Servers.

The whole Cisco server series is optimized for virtualization and offers very cool features like a buildiin Cisco Integrated Management Controller (without extra charge) and Ciscos Extended Memory Technology which allows to use up to 192GB RAM.

Technical Specs

The Cisco UCS C200 M2 server is a high-density, 2-socket, 1 rack unit (RU) rack-mount server built for production-level network infrastructure, web services, and mainstream data center, branch, and remote-office applications.

  • Up to two Intel Xeon 5500 or 5600 Series multicore processors
  • Up to 192GB of industry-standard double data rate (DDR3) main memory
  • Up to eight 2.5-inch or four 3.5-inch internal SAS or SATA disk drives; up to 8 terabytes (TB) total
  • Built-in RAID 0 and 1 support for up to four or eight SATA drives; RAID 0 and 1 support for up to four or eight SAS or SATA drives with optional mezzanine card; and RAID 0, 1, 5, 6, 10 support for four SAS or SATA drives and RAID 0, 1, 5, 6, 10, 50 and 60 support for eight SAS or SATA drives with optional LSI MegaRAID card
  • Two half length Gen 2 PCIe slots-one full height x16 and one low profile x8 PCI Express-two integrated Gb Ethernet ports, and one 10/100 Mbps Ethernet management port for accessing the controller
  • Front- and back-panel interface with video, two USB, and serial port connections

More Information on


The Hardware makes a really good first impression.

One of my next posts will be about the CIMC (Cisco Integrated Management Controller) which I really started to like.