Leap second adjustment on 30th of June may cause issues 2

Leap second adjustment on 30th of June may cause issues
Next leap second adjustment is scheduled for 30th of June 2015 at 23:59:60 UTC and it may cause issues on NTP synchronized devices and operating systems. Systems based on older Linux kernels are known to be affected by leap second, several vendors have released KB articles regarding leap second impact on their software. VMware Certain versions ...

VDP 6.0 configuration utility not compatible with Google Chrome – Updated

VDP 6.0 configuration utility not compatible with Google Chrome - Updated
Google removed SSL support from recent Chrome versions because of major security flaws in SSL protocol. Unfortunately this breaks some web applications which are running on web servers configured to support only SSL and not more secure TLS, VMware Data Protection configuration utility is one of these applications. If you try to access VDP configuration utility at ...

VMFS Datastore UNMAP using vCenter Orchestrator

VMFS Datastore UNMAP using vCenter Orchestrator
If you are using thin provisioned block volumes for your VMware vSphere VMFS datastores you will certainly benefit from this new vCenter Orchestrator workflow I created. VMware introduced VAAI UNMAP capability in vSphere 5.0, and since vSphere 5.0 update 1 UNMAP has been on-demand operation which requires use of CLI on VMware ESXi host. With ...

VMWorld 2014 US top 10 session recordings now online!

VMWorld 2014 US top 10 session recordings now online!
Recordings of top 10 sessions at VMWorld 2014 US are now available online! STO1965.1 – Virtual Volumes Technical Deep Dive NET1674 – Advanced Topics & Future Directions in Network Virtualization with NSX BCO1916.1 – Site Recovery Manager and Stretched Storage: Tech Preview of a New Approach to Active-Active Data Centers INF1522 – vSphere With Operations ...

Schedule VM version upgrades with vCenter Orchestrator 1

Schedule VM version upgrades with vCenter Orchestrator
Upgrading large number of virtual machines to higher virtual machine version can be painstakingly laborious task if done manually using GUI tools, as a result virtual machine versions are usually left untouched, until it is absolutely necessary to upgrade to new version to unlock new vSphere features. However, if your server gear is recent enough ...

vSphere VM version impact on available CPU instructions

While working on new vCenter Orchestrator workflow for scheduling VM version upgrades I ended up doing some fact checking on low level differences of available VM versions. Using simple cat /proc/cpuinfo method on Linux, I noticed that set of CPU instructions exposed to guest OS is actually dependent on VM version. I tested VM versions 7, ...

RHEL, CentOS and Oracle Linux 7 support on vCloud Director 2

VMware vCloud admins heads up, please note that recently released RHEL, CentOS and Oracle Linux 7 releases are NOT supported on current vCloud Director 5.5 releases. And in this case “no supported” also means not going to work! RHEL 7 introduced radical OS level changes which require changes in vCloud Director guest customization workflows, mostly on ...

vCenter Server 5.5 keeps on crashing, fix available

A fellow vSphere administrator on #vmug_fi IRCnet channel was hit by obscure issue on vCenter Server 5.5 Update 1b, after a vCenter Server Windows host reboot vpxd.exe kept on crashing immediately after it started. VMware support came through and provided a resolution in no time, it seems that vCenter Server 5.5.x thread stack size is too ...
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