It’s been almost a year that I’ve got my first VCAP-DCA certification, but instead of writing about how I prepared for it, I thought it will be more useful to write about a global strategy for every certification exam. I’m a big fan/believer on IT certifications, especially those lab based, because you can’t brain dump
Today I was experimenting with the manual installation process of vRealize Automation, which is used during a distributed deployment. The IaaS installer is used to install different components of the vRealize Automation platform in this mode. The image below, show different separate components for HA deployment. Image from http://pubs.vmware.com I got some error during the installation
I was working on the network part of some Solaris servers today, this involved deleting and recreating things like vnic, interface and link aggregation. The planned configuration look like this one: image from http://docs.oracle.com/ After deleting all the network configuration from the LDOM, I wasn’t able to recreate the link aggregation, the following error was shown:
Du to some hardware issue, I was in the process of reinstalling my Orchstrator appliance, this took me some time to identify the deployment steps, as I dont do this kind of setup on a daily basis. So I thought if will be useful for futur deployment, to note the major steps, every step is
Some small things can have a big impact on the entire infrastructure. Time synchronization is one of those things, and this is why VMware recommend configuring an NTP server for your vSphere infrastructure (and generally it’s recommended,best practice/required for all the datacenter components). In vSphere 6, before you can add an active directory as an
Over the years I have used many hardware variations to build my VMware home lab. I started with a mini lab on a Dell Latitude with 16GB of RAM, then an HP desktop Workstation with 32GB of RAM and 2TB of storage, and many other hardware combinations. The main objective was studying for certification or
This is the second part of Understanding ZFS Pool articles series, where i’m trying to simplify things and to address the most used ZFS file system features. In the first part, we saw how to use physical disks to create a zfs pool and how to troubleshoot and replace failed devices. In this part we
Zpool or zfs pool are the base layer on which we create zfs file system, this pool can be constructed in different way to accomplish the desired redundancy. ZFS pool can be created in three different RAID configuration: RAID 0: No protection is available using this configuration, as you write data it get distributed across the
This is the tip of the day on how to install ESXi on usb thumbdrive and boot it inside a VMware Workstation virtual machine. I was in the process of building my home lab based on an Intel NUC, there was only one small problem, I don’t have a desktop monitor to view the esxi
Situation where you need to shrink lvm partition or file system are rare due to the plenty of storage space we have nowadays, but first let’s clarify one thing, the correct term is this : some time we need to shrink, reduce or resize an LV (logical volume) file system, which can be an ext3,