Sometimes your VM gets stuck and you have no possibility to do graceful shutdown or power off through the vSphere client. Saying it differently, the VM is stuck and the only way is to reboot the whole ESXi host, which you certainly don’t want to do. But the unresponsive VM running there can be “killed” […]
How-to Flash Dell Perc H310 with IT Firmware To Change Queue Depth from 25 to 600
Now, at first. This it totally unsupported by VMware or Dell, even if the firmware I’m flashing the card with is from Dell’s website. To tell you the whole story you should read My VSAN Journey and understand how the setup in my lab is built and why I’m doing this. I’m basically trying to […]
VMware ESXi S.M.A.R.T Health Monitoring
With Flash storage around gaining popularity, it might be interesting to see not only if the performance is what’s should be but also the health of disks whether the’re magnetic or Flash drives. I was looking on checking somehow the S.M.A.R.T values. There are two ways to check it on VMware ESXi, and it can be […]
How to Add Padding and Border to Images in WordPress
Since the release of WordPress 3.9 the advanced options for images are gone. It’s no longer possible to use the previous options which allowed to put margins and padding, or image border. In the old version you click on an image, click advanced settings and here you go, you can edit image properties – border, vertical space, […]
How-to check Queue Depth Of Storage Adapter or Storage Device
My VSAN lab uses Dell h310 with queue depth 25. A low VM count with low contention should be fine. I know, but they were on VMware HCL and they were cheap on eBay. While the adapters work out of the box, they had an issue – deactivating one memory channel, which I solved. Recently I found […]
Trust Relationship Between Workstation and Domain Fails – fix without double reboot
Usually it can hapend after restore operation. You restore an older VM and the Windows VM can’t authenticate with the domain because the Trust Relationship between workstation and domain fails. You can see a nice error saying that “The Trust Relationship between this workstation and the primary domain failed”. It can also happens if you restore […]
How-to Change or Disable Session Timeout in LogInsight
VMware has released Loginsight 2.0 product last week. As I’m testing the product in my lab I was looking on How-to Change or Disable Session Timeout in LogInsight. If not, I think it’s like 30 min by default or something like that. You can do it similar way that I did it in vCOPS where […]
How-to safely change from LSI logic SAS into VMware Paravirtual
VMware Paravirtual adapters were introduced back in 4.x and at the beginning there were some concerns. There were some issues if used with virtual machines that didn’t do a lot of IOPS, but that was resolved in vSphere 4.1. Otherwise PVSCSI offers 12% improvement in throughput at 18% less CPU. Today we’ll see how-to safely change virtual […]
My first look on VMware VSAN observer
After my recent installation of VSAN cluster I wanted to get some more deep information about what’s under the hood as vSphere web client itself does not give you much insights. I also wanted to see if the installation and configuration VSAN Observer performance and statistic tool is about. I already saw some posts about […]
By default VSAN does not show any VM storage policies – How to create them
When I finally accomplished my “homebrewed” VSAN cluster by checking “activate VSAN” check box and manually associated the locally attached disk drives into the disk groups, I thought that’s it, VSAN is up and running. True, but after migrating few VMs to the newly created VSAN datastore I thought hey, there should be some storage […]
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