AvailabilityTag Archive

In times where you need to run through your BCP drill, it is important to know and understand the reasons why you need to exercise your Business Continuity Plan drill, and where it fits in with the rest of your Disaster Recovery Plan (DRP or DR Plan). Your BCP Drill… Continue Reading The BCP Drill

With the use of Software as a Service offerings increasing, with 99% of businesses projected to use one or more SaaS solutions in an industry that is worth $165Bn a year. There are 15,529 companies providing SaaS solutions , and so it seems like a logical choice to start using… Continue Reading Risks of SaaS

Even though public cloud is mainstream, and more businesses are going “all in”. They are going for a multi-cloud, hybrid or blended cloud – yet there are still many misunderstandings in those who have not started, and many cloud myths persist. For businesses that are early on their journey to… Continue Reading Misunderstandings of Cloud

How much does it cost to manage your data? In an early job, I was making a projection to purchase more disk to expand capacity on our Exchange mailbox servers. At the time, disk was relatively expensive, and the capacity that I had projected for 3 years would have also… Continue Reading Save Money – by buying more disk

It has finally happened – many years ago, when I worked at VMware, there were internal rumors of a rebootless upgrade being worked on since vSphere 5.0. And now, with the release of vSphere 6.7, you can upgrade the hypervisor without rebooting. What happens is the hypervisor will re-load, without… Continue Reading VMware rebootless upgrades are here!

Are you retaining a backup for 10+ years? Can you still use the data? How useful are your backups? A necessary burden Backups are a necessary task for all businesses. A hundred years ago, if there was a fire at a business, then everything would be lost – a paper… Continue Reading How useful are your backups?

We learn more from our mistakes than we do from our successes, but it is better to learn from other’s mistakes, because you don’t need to suffer. In many encounters during my career, I have learnt from the failures that occur during disasters. The disasters in disaster recovery may not… Continue Reading Disasters in disaster recovery

The concept of “Design for Failure” is often used to describe the approach that assumes that there will be a hardware or system failure somewhere, sometime – and instead of architecting for hardware and server clustering and availability, to design applications so that recovery can be performed quickly. Where the… Continue Reading Design for Failure

I have learnt from my Cloud implementations that often customers hold expectations of Cloud that are not always completely effective. Based on my own experience from working with many customers, I have learnt that the following will need to be a focus; Cloud is potentially more secure than on-premises implementation. However, the… Continue Reading 6 Lessons from Cloud Implementations

If you are new to using the cloud, or are now deciding to move more workloads to the cloud – here are my top 10 tips for cloud adoption 1. Switch off dev/test when not using it Probably the biggest advice I can give is to understand the differences between… Continue Reading Top 10 tips for cloud adoption

VMware are often focussing on the latest and greatest features and capabilities offered by their newest software. Of course, they are always driving forward and the next version’s enhancements and benefits are forefront of their minds – but there are still some people out there who are just starting on… Continue Reading Benefits of VMware – the uneven cluster

In my recent AWS Certified Solutions Architect exam, one of the key learning areas that I needed to master, was the change in terminology to transfer my knowledge from VMware vs. AWS. Obviously, there is no direct one-to-one mapping of the product offerings, but there are some common areas, at… Continue Reading VMware vs. AWS

Running release R minus 1? What about release R plus 45 days? We all know the Patch Tuesday update cycle where Microsoft releases their updates. It is common practice for risk-averse companies to not run the very latest release of software, instead having a policy of running “R-1” – which… Continue Reading R-1 is dead, long live R+45

I always recommend to create a dedicated management cluster for your vSphere virtual environment, but what is a dedicated management cluster, and why is it so important to have one? Not only is it best practice, there are real reasons why you should choose to do this. What is a… Continue Reading Dedicated Management Cluster

DIY is dead. The time when you could “do it yourself” is no longer relevant for IT Infrastructure. It may take a while for it to happen, but it has happened before – to desktop PCs. Approximately 20 years ago, it was both cheaper and easier (if you knew how) to… Continue Reading The era of infrastructure DIY is dead

Assumptions are often made that if you have storage, you need to use RAID. If you have moving parts like fans, the assumption is that you need a hot spare (or at least the ability to hot replace the part), and then it goes on to redundant network connections, warm… Continue Reading The concept of redundancy – is it redundant?

I often use the concept of RADIO (Redundant Array of Distributed Independent Objects) in my description of VSAN, as people need extra help in understanding why you don’t need RAID in a VMware Virtual SAN. It’s particularly applicable to storage, but the concept also applies to compute (CPU and RAM),… Continue Reading What is RADIO?

Today I attended a Microsoft StorSimple 8000 series presentation at Microsoft’s offices here in Adelaide, South Australia. It’s a 2RU / 4RU device that provides primary storage through iSCSI, with inline block level automatic tiering, de-duplication and compression, where the final tier is Azure cloud storage. It incorporates volume-level snapshots “for… Continue Reading Microsoft StorSimple 8000 series review

I had a question from a company that had lots of small regional sites, asking “Is a single VM on a single host viable?”, in response to my query about why they were buying one or two servers for these sites. There was an assumption that it was only worthwhile… Continue Reading Is a Single VM on a Single Host viable?

In today’s modern world, the task of threat and risk assessment is based on prior experience and history. It is human nature to be limited in our imagination by prior experience. When identifying the threats to your business and systems, you need to have an imagination on the possibilities that… Continue Reading Threat and risk assessment