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Category Archives: VSphere 5.x
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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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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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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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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Wanna move files around on your vSphere 5.1 hosts from shell – use vifs!
Came across this new command i haven’t come across before – certainly appears new to the vSphere cannon. Handy tool for those who don’t use vMA or are in a hurry. vifs – perform file system operations on remote hosts … Continue reading
Posted in VSphere 5.x
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Getting a “truer” reflection on you CPU performance within a vSphere 5.1 virtual machine
One feature i really like with the virtual machine hardware version 9 (native to vSphere 5.1) is the new virtual machine performance counter set. In the past have found it difficult to more accurately quantify the CPU performance within a … Continue reading
Posted in VSphere 5.x
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View Clusters and the limitvmsperesxhost parameter
Came across an interesting issue over the weekend relating to our View vSphere cluster. Wanted to evacuate VM’s off a host for maintenance purposes and was lazy and thought to keep them up. Thing was DRS wouldn’t let me move … Continue reading
Think your VMFS partition is corrupted? voma and parted to the rescue
Came across an issue recently on one of our ESX 5.1i hosts, looked awfully like the something went awry with partition tables. Disk sizes were skewed and generally performance and kernel logs showed some quite non-descript errors. Turns out voma … Continue reading
Posted in Uncategorized, VSphere 5.x
Tagged vsphere corrupt vmfs, vsphere voma, vsphere voma corrupt vmfs
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The curious case of the renamed VSphere VM
On the VMware forums there arose an issue regards a user who ran into issues with a renamed VM. Principally they want to get resxtop stats off the machine. Thing is the renamed VM appeared as it’s older counterpart: # … Continue reading
Posted in VSphere 5.x
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A Virtual Picasso 