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One of the “issue” with vmdk in thin format is that they start “small” and then grow when you add new data… But when you delete some data, the vmdk file size is not reduced. To be honest this issue is more related to the guest file systems that does never delete the block data, but only the metada (or some of them). Of course at guest OS level you will see the right disk usage, but this will probably not match the one that you see at VMware level (that usually will be bigger).

One possible issue after a vSphere 5 upgrade using an in-place upgrade of vCenter Server could appear when you forget to remove the Converter Enterprise plugin (and/or the Guided Consolidation plugin). As you know some products has been removed from vSphere 5, and their plugins may remain in a “orphan” state. The result of this issue is that you will have a “broken” plugins list (with some plugins that are no more available) and also a wrong vCenter health status, due to some services that are no more existing:

The RDM disks are a feature of VMware vSphere (but was present also in Virtual Infrastructure) to make a “mapping” between a LUN (or logical disk) to a VM (is similar to a disk pass-through). This feature can be used in different cases, for example: to support disk larger than 2 TB (only in vSphere 5 with physical RDM) and to implement guest clustering with shared storage (still only with physical RDM). But there is an issue (or a feature :) ) that does not allow to add a RDM disk from the GUI for […]

In the previous post I’ve consider the cases and scenarios of a “non supported” configurations. But what’s happen with “supported” configurations? Are they always working and always in the best way? A supported configuration means that it can work well, but in specific situations, cases, scenarios. Usually a good rule could be make a good analysis and a good virtual design before choose the single pieces. A supported configuration does not mean that also meets requirements like availability, scalability and performance. For example there are a lot of entry storage that are VMware certified, but […]

In previous posts related to vSphere 5 upgrade, I’ve talked several time about the HCL and his relevance. For a production environment, have a completed supported configuration, in each parts (hardware, software, firmware, …) IMHO is mandatory. But “not supported” not always means “not working”. There are different scenarios with an “unsupported configuration”:

In a vSphere upgrade process, there are two different approach for the host upgrade: a fresh re-install or a in-line upgrade. In the VMware site there is an interesting post about this choice. The differences between an upgraded host and a freshly installed host are:

Mike Laverick has started something of a petition to bring back the VMTN Subscription option: I would like to see VMware re-instate the “VMTN Subscription”. You might ask, what the hell is that? That would be fair enough because it was withdrawn many years ago, and never re-instated by VMware. The VMTN Subscription was similar to Microsoft MSDN or TechNet – where for relatively small yearly fee you could download the core enterprise software and run it for 1year. Right now there is whole legion of home-labbers out there that have to make do and […]

For the View client for iPad there is any other alternative application (at least with PCoIP support), but for the vSphere client for iPad there are some other applications that can work as well of the official VMware application… With the advantage to do not require any silly virtual appliance to act as a “mobiel proxy” and also to be able to work on iPhone and not only on iPad (IMHO I think that also the vSphere Client for iPad could be adapted to the iPhone screen). From the possible iOS applications there are: iVMControl: […]

For the VMworld scheduled in the next year there will be two wonderful locations (both are confirmed): VMworld 2012 US – San Francisco – Aug 27-30 2012 VMworld 2012 EU – Barcelona – Oct 16-18 9-11 2012 Both the city need at least one visit (and both require some days for a good visit…) and also the weather probably could be fine in those period… so which location? Both could be obvious, but also mean time (and money). I think that if you never been at one VMworld US edition, this could be the right […]

This European edition was the second time at Copenhagen, so we can make some comparison with the previous edition: General organization: seems better (one year of experience can help to improve). Transport: similar as last year (bus from the airport and free pass for metro/s-tog), but this time the main entrance was near the metro station. Bella Center: this time seems that was used an extended area, the resul was good and better than last year… more free space, relax area, lot of place to eat or simple sit, bigger reception… maybe the only flaw […]

Instead of give a opinion to each session of VMworld Europe 2011, I prefer point the best moments (maybe unique… for sure “priceless”) of this event: VMworld Community TV: as already written, it was a great opportunity to make a day report (in native language) of the event. Thanks again to John Troyer for this opportunity. VMUG.IT vBeer: on Monday evening there was the Italian vBeer with around 40 people… But the best moment was see Re Ferrè and Perilli discuss about cloud and all around it. vExpert Meeting: on the late afternoon of Tuesday […]

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