I have written multiple articles(1, 2, 3, 4) on this topic so hopefully by now everyone knows that Large Pages are not shared by TPS. However when there is contention the large pages will be broken up in small pages and those will be shared based on the outcome of the TPS algorythm. Something I have always wondered and discussed [...]

I was just talking to Mr Alan Renouf and it appears that there are a couple of free slots left at the API/PowerCLI event that VMware has organized in coöperation with Alan on the 8th of October in London. If you are in London on the 8th October 2010 then you could be in for a treat, VMware are arranging [...]

Over the last two weeks I received multiple questions about the VMware vCloud Director (vCD) Allocation Models. vCD has three different type of allocation models which are used to allocate resources to a tenant. We will first reiterate some of the basic concepts of VMware Cloud Director before we dive into these allocation models. vCD is an abstraction layer. vCD is [...]

I was reading the Maximum vSphere book by Eric Siebert today and noticed something that I also spotted in Scott Lowe’s Mastering VMware Sphere book. Both Scott and Eric described the fact that the default amount of assigned Service Console memory for ESX has been increased from 272MB to X. I deliberately use “X” as both Eric and Scott mention [...]

I was just browsing the vsinodes/procnodes. I noticed the following: Free memory state thresholds { soft:64 pct hard:32 pct low:16 pct } As explained in Frank’s excellent article on memory reservations, ESX/ESXi uses memory states to determine what type of memory reclamation technique to use. Techniques that can be used are TPS, ballooning and swapping. Of course you will always [...]

I was reading about Storage Filters last week and wanted to do a short write up. I totally forgot about it until I noticed this new KB article. The KB article only discusses the LUN filters though and not the other filters that are available today. Currently 4 filters have been made public: config.vpxd.filter.hostRescanFilter config.vpxd.filter.vmfsFilter config.vpxd.filter.rdmFilter config.vpxd.filter.SameHostAndTransportsFilter The first filter [...]

I was reviewing a document today and noticed something that I’ve seen a couple of times already. I already wrote about Active/Standby set ups for etherchannels a year ago but this is a slight different variant. Frank also wrote a more extensive article on it a while and I just want to re-stress this. Scenario: Two NICs 1 Etherchannel of 2 links [...]