thatwaskube

Notification mails are not just a part of an IT administrator’s life, it is the lightening before a thunder. If they miss these notification emails, anything could burst out in the environment! So settings SMTP for the vCenter is highly recommended, most importantly it should work :)  For the past two weeks I had a chance to learn a lot about sendmail functionality in VCSA, so I’d like to share this with you.  What is sendmail ? Sendmail is a unix/linux OS based SMTP. It is a mail transfer agent (MTA) which is used to deliver or route email. VMware uses sendmail to notify the alarms as notification emails. How to setup SMTP? SMTP is a straight forward configuration, go to "configure" on the vCenter configuration tab, under “settings” look for "mail" and then provide the mail server name along with the mail address where it has to be sent. What happens if it does not work? Now once the SMTP configured, you perform a test alarm and if...

I bet you have installed ESXi multiple times by now, have you ever noticed that we do not get any option to modify the partition layout? this is because ESXi Partitions are automatically set by the installation process.  Quick run thru on the history, Once upon a time, long before the coming of ESXi and when there was only ESX. Taking into account the native behavior of Linux architecture in addition to the ESX specific characteristics, partitioning best practices evolved. While not every administrator will agree on the exact size a given partition should be, a pattern in how ESX is properly partitioned is fairly evident, plus or minus the partition size variance that fits the personal taste of the administrator or perhaps company baseline policies or standards. Right there is a good a reason as any to partition manually ,hence Partitioning became Automatic while installation. Now let us take a deep dive, First of, What are the ESXi partition, take a look a the below ...

One of the more interesting announcements that I believe flew under the radar was the joint VMware-NVIDIA initiative to bring virtual graphics processing unit technology (vGPU) to VMware’s vSphere and the VMware cloud on AWS so it’s really a good time to understand GPU passthrough concept. Before we start, let’s get to know CPU vs GPU: CPU is good at handling multiple tasks but a GPU can handle a few specific tasks very fast. CPU is good for serial processing and has low latency while GPU is good at parallel processing and hence high throughput. In marvel comic terms, CPU is like Antman, GPU is a hulk – incredible hulk!   okay, what is this thing "GPU passthrough" : It is a technology that allows you to directly present an internal PCI GPU to a virtual machine. The device acts as if it were directly driven by the VM, and the VM detects the PCI device as if it were physically connected. VMware calls this operation as VMDirectPath I/O. So why do we ...