Tag: ESXi
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Nodes in the ESXi cluster may report corruption after reboot host or attach device
VCE just released a new KB vce2563 to description the issue. If your ESXi 5.x hosts is connected on VMAX running Enginuity 5876.159.102 and later, you may see this particular issue after reboot ESXi host or attach storage if you enabled block delete feature of VAAI. To check the option status you can run following command on…
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How to setup NTP services by PowerCLI
NTP service is very important for troubleshooting, vmkernel log timestamp is incorrect if your NTP service is not running and ESXi system time is wrong. It can also impact to VM system time even you disable time synchronization on VMware Tools since VM still need to sync time with ESXi after awake from suspended status,…
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How to decode ESXi 5.x SCSI error code
Storage is critical component for virtualization, lot of VM performance issue is related to storage latency. You may see similar error message on vmkernel log for some case: 2014-02-11T07:18:20.541Z cpu8:425351)ScsiDeviceIO: 2331: Cmd(0x4124425bc700) 0x2a, CmdSN 0xd5 from world 602789 to dev “naa.514f0c5c11a00025” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x4 0x44 0x0 It much like language…
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vHBAs and other PCI devices may stop responding in ESXi 5.x when using Interrupt Remapping
Your vHBAs or other PCI devices may stop running in ESXi 5.x when using Interrupt Remapping feature. This issue only impact to UCS blade BIOS version 1.4(3c), it has been fixed on 1.4(3j). Please refer to http://kb.vmware.com/kb/1030265 to see how to disable Interrupt Remapping feature in ESXi 5.x Also refer to https://tools.cisco.com/bugsearch/bug/CSCty96722.
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Error: No NIC found with MAC address…
Your HP server may runs fine on ESXi 4.x or 5.0, but you may get error message No NIC found with MAC address xx:xx:xx:xx:xx:xx after upgrade to ESXi 5.1 or later. That’s caused by network adapter firmware, you have to upgrade server network adapter firmware by HP SPP 2013.02 or later. I would recommend you…
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How to find which ESXi 5.1 host lock the VM
Sometimes VM may show unknown, invalid or orphan on vCenter Server, but it still running somewhere. Some technical support engineer may request reboot VM/ESXi host, or search on each host one by one. Declare: This article only apply to ESXi 5.1, I haven’t tested on other version. This is easiest way to find out which…
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ESXi 5.1 shows 0 value for CPU/memory in vcenter
It’s been a month, i was busy to make our environment more stable, a lot of troubleshooting, webex session and discussing. Few days ago I noticed random VMs kept vMotion constantly. Some VMs got strange situation, show orphan, invalid or unknown status, but still online. I couldn’t find any evidence why the VMs went to…
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HA for DMZ ESXi 5.1 cluster
Virtualization becomes popular than never this year, I see many company is transforming internal infrastructure into virtual platform. HA is key feature of vSphere ESXi 5.1, you have to consider this part on every design, especially DMZ virtual machine. Most DMZ ESXi cluster has restricted networking policy, even ICMP maybe not allowed. As you may…
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Unable to connect to web services to execute query
It’s been a long time since last post, I was pretty busy on a storage issue, I did a lot of work with hardware vendor and VMware for this weird issue. During our troubleshooting, I noticed a minor problem when I try search VM in vSphere Client, everytime it gave me error message “Unable to…
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The number of heartbeat datastores for host is 0, which is less than required: 2
Today I see this error message on one ESXi5.0 host: The number of heartbeat datastores for host is 0, which is less than required: 2 No any VM is running on the host by DRS or HA, VMware KB gives a solution but too complicate. Re-configure HA can fixes the problem. Right click the host…