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 … Read more
Storage team said the best practics of QFullSampleSize is 32, they want to check how it’s going in our environment. It’s easy to check individual host, but pretty time consuming if you want to check 300+ hosts. Here is a one line PowerShell script to export QFullSampleSize and QFullThreshold to a csv file. Get-VMHost | … Read more
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 … Read more
Today, we P2V one vCenter Server, I re-added identify source for some reason, I didn’t modified any existing domain group and ACL. After a while I got a interesting case. User reported they got “No permission to login to vCenter Server 5.1 by vSphere Client”. I looked into the vpxa.log of vCenter Server, it show … Read more
First of all, this article is nothing related to PowerCLI. 🙂 You probably know how to set Path Selection Policy (PSP) by vSphere Client, but how you can setup 100 LUNs manually? We have some script can make your life easy. How to retrieve LUN Path Selection Policy: esxcli storage nmp device list | egrep … Read more
I worked on move RDM LUNs of Microsoft Cluster virtual machine from one iGroup to another. To make sure the moving safe, we should record RDM LUN information before migration. We had two VMs with almost 20 RDM LUNs, it’s pretty time consume to get the information manually, I used following script to retrieve information: $RMDinfo = … Read more
Few weeks ago, I tried to standardize networking of a cluster, there were 4 VLANs for production virtual machines, I binded the VLANs on one virtual switch which had 4 physical vmnic. Then I created 4 port groups with different VLAN ID, but for some reason virtual machines unreachable via some vmnics. Network team verified port channel … Read more
If you installed “HP ESXi 5.0 Complete Bundle Update 1.6” via Update Manager 5.0, you would be able to see storage and power sub-system shows warning on HP server, that’s because some parameters show NULL in updated HP SIM provider. Example: HPVC_SAController.Name=”vmwControllerHPSA1″,CreationClassName=”HPVC_SAController” CreationClassName = HPVC_SAController Name = vmwControllerHPSA1 PowerManagementCapabilities = (NULL) ResetCapability = (NULL) OtherDedicatedDescriptions … Read more
When I read VMware documents, there is a cool feature Hardware Acceleration I found in storage book. That recall me an outage about one year ago, our NetApp filer was crashed due to motherboard problem, part of datastores was failed, we have to move virtual machine from the filer to other. We noticed the storage … Read more
My SMVI backup job was crashed few days ago, the stupid application generated a lot of snapshots for virtual machine!!! It’s hundred! I really don’t like to remove one by one! That’s what I used to clean up the snapshot. Get-VM | Get-Snapshot -Name smvi* | Remove-Snapshot I used wildcard smiv*, it means all snapshot that … Read more
