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DynamoDB partitions In this lecture, we’re going to talk about the DynamoDB partitions. This is going to help you understand how DynamoDB works under the hood. So what exactly is a DynamoDB partition? Now, the partitions store the Dynamo TB table data physically, all right? The partitions are actually ten gig SSD volume volumes, which physically store your table data. Now, you should not confuse this with your tables partition key or the hash key, because the partition K is a logical partition, whereas the DynamoDB partition is a physical…

DynamoDB throughput So now DynamoDB throughput. So let’s look at how the throughput is calculated in both these modes. So the first one is the provision capacity mode. We know that this uses capacity units. So one capacity unit is equivalent to one request per second. So one read request or one write request per second is one capacity unit. So RCUS or read capacity units are calculated in blocks of four KB’s and the last block is always rounded up. One strongly consistent table read per second is one…

DynamoDB overview Let’s start with DynamoDB. This is the database that got me started on my AWS journey. And this is one of the databases from AWS that provides ultralow latencies and high performance at any scale. So let’s begin. DynamoDB is a non-relational database, and it’s a key value store. It’s fully managed serverless NoSQL database from AWS. It’s fast, flexible, cost-effective, fault tolerant, and secure. By fast, I mean it provides ultralow latencies. Flexible refers to the NoSQL type of structures that it supports. That’s semi structured data,…

Objectives Hello and welcome again, students. We’re just getting started in this new section. It’s section 106 of LPIC I Exam 102. And in this section, we’re going to talk about user interfaces and desktops. And in this section, the first subsection is 106, which is the installation and configuration of the X11 server. The weight is that you will most likely get two questions from this section, and candidates should be able to instal and configure X. pretty simple description. The key knowledge area that we’re going to discuss…

Understand the types of vNICS When installing a virtual machine onto a virtual machine, you have three choices. The oldest of these three is referred to as the flexible adapter. This adapter will appear as either a VLAN or a Vmxnet adapter, depending on whether VMware Tools are installed. There’s very little reason to use this adapter unless you’re working with an operating system that doesn’t support any other options. Next is the E 1000 or E 1000.This is an Intel 82545 Em. Nick that has been emulated. This adapter…

Use the hardware compatibility list I’m going to start off by looking at the physical network adapters to see which physical network adapters are supported by ESXi. I can use the hardware compatibility list to get there when I go to vmware.com. go HCL to access the VMware compatibility guide, also known as the HCL or hardware compatibility list. On the first page, we come to systems and servers, but I want to go down to IO devices as I’m interested in the network cards. From here, I can select…

Welcome I will cover some of the useful command-line utilities for analyzing virtual network traffic and then talk about physical adapters, how to find drivers for them, and some of the features they support, such as net queue receive, side scaling, SR IOV, and direct path IO. Next, I’ll talk about multicast filters and DV filter functionality in the distributed switch and advanced VMAX networking. Three Features. What you should know This is an advanced course and assumes that you have a general knowledge of Vsphere and physical networking configuration…

Understand dvFilters DB filters were introduced in ESXi and are a feature of a distributed switch. On either the virtual or physical nicks, DB filters are placed between the nic and the distributed switch. Up to 16 DB filters can be inserted, but 0 through 3 and 12 through 15 are reserved for VMware use. DB filters allow for the monitoring and manipulation of network traffic. VMware NSX uses DV filters to redirect traffic to a different VM, such as Palo Alto Networks’ next-generation firewall. NSX also uses DV filters…

Use esxcli Before we begin diving into advanced networking topics, I want to introduce some of the command-line tools that I’ll be using, starting with Esxcli. Esxcli was introduced in 50, and its functionality has grown over time so that it now supersedes many of the other command-line utilities, such as the ESX CFG commands. Esxcli has a very long command list, and I’ll go through some of the networking commands now and discuss others throughout this course. I’m currently logged into a virtualized ESXi host. I’ve enabled SSH on…

VMware Software-Defined Data Center (SDDC) overview When it comes to the software-defined data centre and the implementation on the VMware cloud on AWS, it’s important to understand that this SEDC software is essentially delivered as an on-demand service. This is powered by the VMwareCloud Foundation, which integrates Vsphere, vSAN, Van, and NSX. It is optimised to run on dedicated elastic bare metal AWS infrastructure, as well as VMware Vcenter management capabilities. The VMware-defined data centre stack from VMware includes VMware vSphere, VMware vSAN, and VMware NSX virtualization technologies. This stack…