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Category Archives: VMware
vSphere 5.1i virtual machine – wanna move it,its powered off and can’t – what gives?
Recently had an issue where i couldn’t migrate a powered off VM from one datastore to the other – the migrate option was grayed out (yep i could a scp but i was feeling lazy :)) – thing that tickled … Continue reading
Posted in VSphere 5.x
Tagged esxi 5.1, virtual machine cold migration, virtual machine migrate, vsphere
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VSphere HA Clustering – best practices – nice and simple does it :)
Must say from day 1 with working with VMware have been a big fan of the clustering technology that comes with vSphere/vCenter, in comparison to the even the likes of MSCS its a sinch’ – suppose the one thing i … Continue reading
When your vSphere VM’s need CPU cycles NOW!
We had an interesting performance issue which reared its head recently. Environment Xenapp 6.5 environment. Hypervisor: ESXi 5.0 u2. Noticed consistent latencies on applications across the board, these latencies would in play no matter how “close” the users’ were to … Continue reading
Posted in VMware, VSphere 5.x
Tagged cpu vsphere, high latency vsphere vm, vsphere, vsphere latency vm, xenapp vsphere vm
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Traffic shaping and Powercli
In my dealings with PowerCLI i haven’t had to go much further than lud.info to find what i need. Have an interesting use case for traffic shaping in our environment as we utilize Citrix Provisioning Services (PVS) and were looking … Continue reading
Posted in PowerCLI
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VMotion and it’s port
Interestingly in all the years using VMware’s products i’ve never come across the following error: Migration [-1408237366:1279683851917265] failed to connect to remote host : Connection refused Quick google and voila http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1030264 What happened? Port 8000 need to be opened – … Continue reading
Posted in HA/DRS
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Useful post-installation ESXi installation tip – check your cables :)
Worth running the following as a post install step – particularly for those multiple 1gb hosts you’ll still have lying about 🙂 # watch -n l ‘esxcli network nic list’ A good way of verifying each of your cables is … Continue reading
Posted in Installation
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ESXi builds and encrypted passwords
Recently one of my co-admins was looking to streamline their esxi build process, was asking about what was required relating to password encryption. Tested by adding the below: %post section of the kickstart: %post –interpreter=bash /usr/sbin/useradd -m -d /home/T1 -p … Continue reading
Posted in Installation, VMware
Tagged esxi build kickstart, esxi kickstart, vsphere, vsphere powershell
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Citrix PVS replacement in vSphere environment – Non-Persistent disk perhaps
Read an interesting article on non-persistent disks from Cormac Hogan recently and got me thinking. http://cormachogan.com/2013/04/16/what-are-dependent-independent-disks-persistent-and-non-persisent-modes/#more-1698 Number of Citrix shops have enterprise licensing schemes but would love to get the “image”-type functionality that comes with PVS, unfortunately either a pricey … Continue reading
Posted in VMware, VSphere 5.x
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Mixed versions of ESXi in a HA/DRS cluster and what to watch for
Recently had to tackle this issue. Is a nice,precise article that covers some of the pitfalls well. http://blogs.vmware.com/vsphere/2011/10/mixing-esxesxi-versions-in-an-hadrs-cluster.html
DirectPath i/o and your heavy RDS/View/Citrix apps
Currently undergoing a large scale roll-out of a new RDS/VDI environment. One of the trickier pieces of the jigsaw will be the heavy-duty apps. Been examining what our possibilities are regards latency sensitive applications particularly with a view to our … Continue reading
Posted in VSphere 5.x
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A Virtual Picasso 