Archive for March, 2011

UCS Firmware 1.4 support FCoE Direct Attach SAN

Posted on March 13th, 2011 in Announcement, Server, Storage | No Comments »

If you are following Cisco Unified computing solution, here is some good news. The latest firmware version 1.4 is officially support direct attach FCoE Storage protocol without require the additional SAN switch as previous version. Both Netapp and EMC are officially supported and certified to direct attach with the Cisco UCS without a SAN switch require. This will reduce the complex layer it require to deploy especially for those environment who are not FC users previously.

I found some very good post over the internet, you can refer the URL below for more information about the new update provided in Firmware 1.4

Unified Computing Blog

M. Sean McGee

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VMware High Availability Behavior

Posted on March 6th, 2011 in Tips, Virtualization, vSphere | No Comments »

This post is to shared 1 of the incident happened to the previous deployment. There were 2 types of Network adapters running on the physical host, which are NetXen and Broadcom in this case. For the Broadcom adapter, it come with TOE, therefore we had configured the VMkernal on the adapters to handle the IP base datastore for the ESX host.

There was a case that the ESX host become isolated and unresponsive due to the Netxen Driver failure, which we will still able to type command from the server console. While this happen, as the isolation respond option was set to leave power on, the VMware HA will not kick in to force the virtual machine for the fail over process.

There are pros and cons while doing these, but according to my Local VMware friend, the system recognize the lock session on the specified virtual machines were detected in the datastore, therefore the HA clustering will not allow the surviving systems to take over the session. The explanation fall exactly the same with our incident as the VMkernel traffic was still alive during the host network outage happen on the Netxen NICs.

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PSOD on HP Proliant G7 with AMD 6100 Series

Posted on March 1st, 2011 in Server, Tips, Virtualization, vSphere | 2 Comments »

There is known issues been faced by small group of user who had deployed their VMware ESX host on the latest platform with G7. You can refer to the official link from HP here and additional KB from VMWare referring to the same issues. If you are facing this, you may be the unlucky 1, but nothing much you could do as the PSOD message will refer to the CPU error, compatible issues and etc.

The only thing you could do is to wait until both HP and VMware to come out a final fix in this case. Quick solution, is change hardware vendor or different platform. I had experienced 3 times about it, in the past 2 months and this is the latest finding we had received from both VMware and HP regards the latest PSOD we had. HP had recommended to upgrade the BIOS, Firmware and driver for multiple times, but this doesn’t fix the issue we are facing. Lately there had release another new update bios and hope this problem will be gone after this.

Feel free to share any work around solution beside the official link provided by tech support.

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