WARNING: Veeam Backup VDDK error 1 and 2 ESXi 5.5/6 Veeam B&R v8/9 Updated: 03/01/2017

January 3, 2017 Bilal Ahmed 0

So this has been an ongoing saga for quite a while: Repeated VDDK error 1 and 2 This is an issue I blogged about a little while ago too, right here: WARNING: Veeam Backup VDDK error 1 and 2 ESXi 5.5/6 Veeam B&R v8/9 It has been causing people plenty of issues and although it’s simple to fix, it’s annoying and it shouldn’t be happening! Veeam and VMware have been pointing the finger at each other for months now. Personally I would lean to it being a VMware issue, simply because a restart of the management agents resolves the issue. So I have been following the thread on the Veeam forums and there has finally been an update! VMware have […]

The Host Virtual MAC Address Riddle

September 5, 2016 Bilal Ahmed 0

For ages I have been pondering over ‘something’ which seems very trivial and the fact I can’t get any solid info on it is driving me nuts: Why does every pNIC also have a virtual MAC address? So here with have the VMkernel ports, a VSS and pNICS: Just as you would expect, every physical NIC (pNIC) on a host has a MAC address. BUT when you type ‘esxcfg-info -n‘ in the shell, you will notice that every vmnic also has a Virtual MAC Address!   \==+Physical Nic : |—-Name…………………………………………..vmnic3 |—-PCI Segment…………………………………….0 |—-PCI Bus………………………………………..2 |—-PCI Slot……………………………………….0 |—-PCI function……………………………………1 |—-MAC Address…………………………………….XX:XX:XX:32:06:1f |—-Virtual MAC Address……………………………..00:50:56:52:06:1f |—-FPT Shareable………………………………..true Now as you can see the Virtual MAC Address starts off with a VMware MAC and then finishes at the […]

Book Review: Networking for VMware Administrators

May 26, 2016 Bilal Ahmed 0

So I have been collecting lots of books ever since I started on my journey of doing my VCAPs. One book time and again has been my go to reference for absolutely anything VMware networking related….and you guessed it…IT’S THIS BOOK! When I have been in chats with networking guys, and we have been discussing various features, I can point them to sections of the book, and if I need to confirm something I can double check it quickly. You do not need to be a networking guru to use this book. I have/had a CCNA (it has expired), so I have a fair idea, but I am by no means a networking guru and I have learnt plenty from […]

Windows vCenter vs. vCenter Server (Virtual) Appliance (vCSA/vCVA)

March 22, 2015 Shady ElMalatawey 5

The following question about vCenter Server is which version to deploy: Windows vCenter Server or vCenter Server Appliance (vCSA). First, let’s examine the components of any vCenter Server. They’re Single-Sign On (SSO), Inventory Service, vCenter Server, Web Client and a back-end Database.   To answer the question above, we need to take a deep look at how answer of the above question affects all of these components. Keep in mind that it’s also related to the way you’d deploy your vCenter Server Components according to your customer/case needs and requirements or constraints. Some components and other VMware products deployment are affected by wither you’d use Windows vCenter or vCenter Server Appliance (vCSA). My vExpert colleague, Mohammed Raffic, made a great comparison between […]

IBM DS 3500 with vSphere 5.0.x SATP Rules

March 15, 2015 Shady ElMalatawey 0

Few days ago, I went to a customer that has old Virtual Environment. He has 3 hosts IBM SystemX servers, IBM DS3524 SAS Storage which is directly SAS-attached to the hosts and vSphere 5.0 U2. His environment has strange issue: every few minutes, Storage Manager throws an error that “LUN x is owned by not-preferred Controller. Preferred Controllers is Controller A”. He first thought that it was a firmware issue in the DS3524 storage and he asked IBM guys to upgrade the storage firmware. They upgraded the firmware to version 7.86.49 and the problem was still there. First, I checked compatibility matrix of both VMware and IBM and I was shocked that they were different as the following screenshots: VMware one […]

Virutalizing vCenter Server: Yes or No?

March 13, 2015 Shady ElMalatawey 1

“Should I virtualize vCenter Server or not?!”.. This question is asked a lot, specially during preparing for new vSphere deployments. IMO, and in 99.9% of all cases I meet, I answer with “Yes!! Why not?”. vCenter Server is a central part of your Management Layer of your infrastructure that requires high level of availability and performance. vSphere 5.x is capable of providing the required level of performance for vCenter Server itself or for any one of its components (SSO, Inventory Service or Web Client) as well as its required back-end Database. In the same time, virtualizing vCenter Server provides higher level of availability, using vSphere HA and the new SMP Fault Tolerance in vSphere 6.0. Despite many advantages of virtualizing vCenter Server, […]

Modify vCenter Server Appliance 5.5 Time Zone

March 2, 2015 Shady ElMalatawey 0

Few days ago, I went to a customer for a migration project to vSphere 5.5. After deploying vCenter Server Appliance 5.5 U2d and during configuration, I had some issues with “root” account -described here– that I needed to modify the time zone on my vCenter Server Appliance and I got a big surprise. On vCenter Appliance 5.1, I used to do it through its console as the screenshot below indicate. For vCenter Appliance 5.5, and surprisingly, this can’t be done anymore as indicated by this KB. Again, I began to search for some help, till I found this KB about how to change ESX 4.x Time-zone using service console. I thought that vSphere 4.x Service Console is a Linux Shell UI which is […]

Virtualizing Microsoft Exchange 2010/2013 on vSphere 5 Best Practices

February 12, 2015 Shady ElMalatawey 1

We’ll talk today about virtualizing Microsoft Exchange on vSphere 5.x platform. Microsoft Exchange is considered the most common messaging system in any business all over the world. From SMB to huge Enterprises and Corporations, they all may use Microsoft Exchange as their messaging and communication system. For most of them, Exchange is considered Tier 0/1 that should be served with highest level of performance and availability. vSphere 5.x is capable of providing such level of performance and availability while reducing Microsoft Exchange footprint with 5x to 10x by consolidating many Exchange roles and nodes on the same physical hardware while providing 100% or more of the required performance. Best practices mentioned here are collected from different sources that are mentioned in […]

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