If you are using EMC VNX with ESXi 5.1, you may experience low performance when do storage vMotion or VM clone. This is a known issue on VNX, you have to disable VAAI feature to avoid this problem.
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 … Read more
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 … Read more
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 … Read more
We get more new cool feature if keep virtual hardware up to date. And you may face boot problem when upgrade lower virtual hardware version to latest. I always keep my Microsoft Cluster Services VM (MSCS VM) up to date since RDM disk usually uses on that kind of VMs. I tried to search how … Read more
Did you face similar problem? HP ask you provide hardware diagnostic log of SmartStart CD, you maintain the server remotely, and nobody available locally? How can you export the log from SmartStart? Previously I used to map a local USB device in iLO and then export, but how about if the network performance is low … Read more
I have to say you’ll not able to get what you anticipating if you follow VMware document. After referred few blogs and videos, I finally deployed the production in HA and DR mode both, it consumed a lot of time since I had to clone the VM from US to India over WAN. It’s pain, … Read more
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
I start to use VMware workstation since 2002 or earlier, my bad memory can’t recall it. That’s 1st generation of virtualization. If you look at today’s virtual world, we are on the way to “Matrix”! J Enterprise is virtualizing more and more server lead to vCenter Server becomes to a critical role. We have to … Read more
This was a lesson and learns for me after I recovered the data back. My data was lost and no backup… I had a virtual machine was moved from ESX 3.0 to ESXi 5.1 host long time ago. The virtual disk size show 0 and I cannot do storage migration and snapshot on the VM … Read more
