VCAP – Design: Storage Calculation – Part 3

Storage, VCAP6 - Design
This post is a continuation of Storage Calculation - Part 2; in this post we are going to talk about how we calculate storage throughput and datastore sizing for your design. Note: This post will show basic calculations and will not take into account caching and tiering technologies Calculating throughput: In the previous post we discussed IOPS, and now we will use the IOPS in a formula to calculate the throughput. The formula to calculate the throughput is: Throughput in MB/s = Workload IOPS  * IO size / 1024 For example :  A Company uses storage to archive and steam video surveillance, the I/O size for this workload is 64K and the total workload IOPS is 5000 (for all cameras) lets plug the numbers = 64k * 5000 / 1024 = 312.5 MB/s  …
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VCAP – Design: Storage Calculation – Part 2

Storage, VCAP6 - Design
This post is a continuation of Storage calculation part 1; in this post we are going to talk about disk types and how we calculate IOPS and Disks for your Design Note: This post will show basic calculations and will not take into account caching and tiering technologies Disks types Now that we've covered the raid levels, let’s talk about the disk drives. In the enterprise world we normally see the following disk types: 7.2K RPM NL-SAS or SATA 10K RPM SAS or FC 15K RPM SAS or FC SSD When we are looking to design a storage system, we need to consider the following: IOPS RAID Write Penalty Application workflow IOPS = Input/Output operation per second. In spinning disks the numbers of IOPS are well known and they are…
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VCAP – Design: Storage calculation – Part 1

Storage, VCAP6 - Design
I will like to start a series of posts regrading VCAP design storage calculation and performance. we will start with the basics and build on it to more advanced topics. Raid levels: RAID - Redundant Array of In Depended Disks , RAID technology is a combination of in depended disks to form redundancy or create a better performance. There are many type of RAID levels but recently vendors start to use a few common raid levels:   RAID 0: RAID 0 technical details : Method: Block level striping , data is writing across all drives in the stripe set. Using RAID 0 will increase performance since we utilizing all drives from the RAID set at the same time. Fault Tolerance:  RAID0 DO NOT offer any fault tolerance, failure in one of the…
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Installing Replication OVA – connection error

Troubleshooting
While installing the new Replication appliance (6.1.1.13216) in my lab i encounter the following error : "Connection to the remote resource was lost. Check your network connection"   Solution: Make sure that the machine you access web client can resolve vCenter/PSC DNS name you can configure the windows host file to solve this issue another solution will be access the web client from any machine that is joined to your active directory domain   Thanks for reading Mordi.  
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Home Lab Update

Home-Lab
When i was practicing for my VCP and VCAP Deploy I mainly used VMware workstation as a home lab. I used my Desktop PC which included Intel core i5, 32GB for RAM , One 512 SSD and 1TB of HDD. When i needed to practice backup, replication, multiple PSC's and multiple VC's my biggest constrain was the RAM and i had to shuffle VMs and hosts around. So I finally decided to get some dedicated Hardware so i can continue to study. My home lab now include the following: One Dell PowerEdge T130 One Cisco SG-300-10 One Netgear ReadyNAS 202 Dell PowerEdge T130 Configuration: Processor: 1 Intel® Xeon® E3-1220 v5 3.0GHz, 8M cache, RAM: 64GB UDIMM,2133MT/s,ECC780-BBWS HDDs: 2X 500GB 7.2k RPM SATA 6Gbps Networking:On-Board LOM 1GBE Dual Port Management:iDrac8, Basic with Dedicated NIC Cisco SG-300-10…
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Next Step – Preparing for VCAP6 – Design Exam

VCAP6 - Design
Until i get my VCAP6 - Deploy beta exam results, I decided to create a plan for my next step. The next step will be to take the VCAP6 - Design exam which is now GA My plan is use the following resources: Designing VMware Infrastructure Pluralsight course by Scott Lowe ,This is a 2012 course but I think some of it its still valid VCAP6 - Design Blueprint - Main Resource  VCAP5 - DCD Official Cert Guide - i know its old but there are some relevent information  vSphere Design 2nd Edition book IT Architect: Foundation in the Art of Infrastructure Design: A Practical Guide for It Architects book Essential Virtual SAN (VSAN): Administrator's Guide to VMware Virtual SAN (2nd Edition) VMware vSphere HA 6.0 High availability Deepdive :  http://www.yellow-bricks.com/vmware-high-availability-deepdiv/…
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My Exam Experience – VCAP6-DCV Deploy Beta

VCAP6-DCV Deploy
So i decided to take the beta exam and give it a try. This is my first VCAP exam so I wanted to find out the cheap way what is all about. The interface is similar to VMware HOL so make sure you practice at least one lab so you get familiar with it.  You've got 27 questions to do in only 240 minutes, which goes VERY FAST!!!!  The 240 minutes is not sufficient since each question includes MANY tasks. I wasn't able to complete all of the questions since it not enough time, but i guess ill know in 6-8 weeks how i did. I also had the same issues that everybody else was complaining about: Slow connection Slow reaction time for operation you execute Blurry text, its hard…
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VCAP-DCV Deploy Objective 8.3

VCAP6-DCV Deploy, vSphere Security
In this section we are going to cover "Harden a vSphere 6.x Deployment" Here are the objective from the blueprint : Enable and configure ESXi Lockdown mode (Strict / Normal) Configure a user on the Lockdown Mode Exception Users list Customize SSH settings for increased security Enable strong passwords and configure password policies Configure vSphere hardening of virtual machines according to a deployment plan Lab Setup: Using VMware workstation: Microsoft Servers 2012R2 for Services (DNS , DHCP, etc…) Installed esx0 Installed VCSA  Documents used: vSphere Security Guide Enable and configure ESXi Lockdown mode (Strict / Normal): To configure Lockdown mode on ESXi host click on the host>>manage>>settings>> security profile>>lockdown mode >> edit   Configure a user on the Lockdown Mode Exception Users list: In the same location is the above you…
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VCAP-DCV Deploy Objective 8.2 – Part 2

SSL Certificate, VCAP6-DCV Deploy
In this section we will continue  to cover "Manage SSL certificates" Here are the objective from the blueprint : Configure and manage VMware Endpoint Certificate Store Replace default certificate with CA-signed certificate Generate ESXi host certificates Enable / Disable certificate checking Configure SSL timeouts according to a deployment plan Lab Setup: Using VMware workstation: Microsoft Servers 2012R2 for Services (ADCS,DNS , DHCP, etc…) Installed esx0 Installed VCSA  Documents used: vSphere Security Guide VMware KB 2112016 Configure and manage VMware Endpoint Certificate Store: VMware Endpoint Certificate Store (VECS) serves as a local (client-side) repository for certificates, private keys, and other certificate information that can be stored in a keystore. You can decide not to use VMCA as your certificate authority and certificate signer, but you must use VECS to store all vCenter certificates,…
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VCAP-DCV Deploy Objective 8.2 – Part 1

SSL Certificate, VCAP6-DCV Deploy
In this section we are going to cover "Manage SSL certificates" Here are the objective from the blueprint : Configure and manage VMware Certificate Authority Lab Setup: Using VMware workstation: Microsoft Servers 2012R2 for Services (ADCS,DNS , DHCP, etc…) Installed esx0 Installed VCSA  Documents used: vSphere Security Guide VMware KB 2112016 Configure and manage VMware Certificate Authority: In vSphere 6.0 and later, the VMware Certificate Authority (VMCA) provisions your environment with certificates. This includes machine SSL certificates for secure connections, solution user certificates for authentication to vCenter Single Sign-On, and certificates for ESXi hosts that are added to vCenter Server. The following certificates are in use. [caption id="attachment_1806" align="alignnone" width="943"] Source: VMware security guide[/caption] There are many variation of how to configure VMCA , i choose to configure VMCA as a…
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