HP

Oracle Utilizes 50% of Physical Processors on HPE Server

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DBA team told me Oracle was running slow on a HPE server. I observed the CPU utilization was about 50% of overall capacity. Whenever Oracle database bumps up the system experienced slowness. Further  digged into the issue, I see Oracle workload only ran on single physical processor, but the server has two processors. And the  … Read more

ESXi 5.5 and Emulex OneConnect 10Gb NIC

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*** English Version ***

You are using HP ProLiant BL460c G7 or Gen8, ESXi version is 5.5, NIC is Emulex chipset. You are using driver version 10.x.x.x. You may experience the host randomly lost connectivity on vCenter Server, host status show “No responding”. You cannot ping any virtual machine hosted on the blade. High pause frame is observed on HP virtual connect model down links after problem occurred. And you see similar error in vmkernel logs:

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Blue Screen with Bug Check 50 on ESXi 5.x

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Some critical VMs got blue screen in last few weeks. After working with OS and hardware vendor, we figured out the root cause eventually. It’s a CPU problem related to Intel v2 CPU of E3, E5 and E7 families. The detail information is documented in VMware KB Windows 2008 R2 and Solaris 10 64-bit virtual machines blue screen or kernel panic when running on ESXi 5.x with an Intel E5 v2 series processor.

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How to get HP ProLiant blade server and enclosure information

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An enterprise infrastructure administrator needs to run plenty of reports for firmware, software version, or any kind of infrastructure data in their day-to-day operation. Some vendors provide powerful tools to pull out data from their solution, but what if you don’t have such tools? It is pain to get data manually especially for large number of servers. I’m going to share my trick to you. I’ll use HP ProLiant blade system for example, as it’s very common case in enterprise datacenter.

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Windows cannot be installed on drive 0 partition 1

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I think Windows Server 2012 will be next popular server OS just like Windows Server 2008, it’s also a nice hypervisor OS on virtual world. How do you think? Installation is first step to experience the wonderful OS, you may see some strange problem during that step just like me. Today’s topic occurred long time … Read more

All paths lost on HBA port

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HP, a great company, I like the hardware design of HP ProLiant server, it’s pretty easy for datacenter maintenance and operation, do you like it? Today, I’ll introduce a storage issue on HP ProLiant BL460, BL480 blades. This issue happened on Qlogic HBA with VC-FC module. I have two dual port Qlogic HBAs on each … Read more