Browsing Posts published in August, 2011

Reading Time: 3 minutesThe vCenter Server availability could be necessary in most cases and critical for large environment (or where a lot of services depends on it). In small environment, usually, this not so critical, because most of the VMware functions still work also without vCenter Server (for more info see vCenter Server Design: Physical vs Virtual). There are at least four solutions to increase the availability for vCenter Server: use a VM for vCenter Server and use VMware HA use vCenter Server Heartbeat product use a MSCS solution for vCenter (unsupported from vSphere version) use VMware FT […]

Reading Time: < 1 minuteFrom the version VI 3.x the vCenter Server can be deployed or on a physical server or on a virtual machine (both solutions are supported by VMware). In this page pros and cons are analyzed.

Reading Time: < 1 minuteNote: VMware has removed the vRAM Entitlements concept and restriction. So this post is no more relevent! Introduced during the official announce of vSphere 5, this news in the vSphere licensing (expecially for the hosts) has been changed (the first rumor of this was mentioned here by Gabrie van Zanten). Not in the priciple (the vRAM is still the allocated vRAM of powered on VM, not the consumed vRAM) but in his value and how are counted (for example there is a max vRAM value of 96 GB for each VM): vSphere edition Previous vRAM […]

Reading Time: < 1 minuteObjective 1.5 – Identify vSphere Architecture and Solutions Knowledge See also those similar posts: Objective 1.5 – Identify vSphere Architecture and Solutions and Objective 1.5 – Identify vSphere Architecture and Solutions.

Reading Time: 5 minutesObjective 1.4 –Secure vCenter Server and ESXi Most of the references are from the vSphere Security Guide, but also the old (from VI 3.x) Managing VMware VirtualCenter Roles and Permissions is still a good reference. See also: Objective 1.4 – Secure vCenter Server and ESXi e Objective 1.4 –Secure vCenter Server and ESXi.

Reading Time: < 1 minuteIn vSphere 5, for the first time, ESXi has now an integrated firewall. In this way another feature gap between ESXi and ESX has been filled. But this firewall is quite new and different compared to the one from ESX, although the management (at the GUI mode) remain similar of the old one. For more info see: http://vinfrastructure.it/vdesign/esxi-5-firewall/

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