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London VMUG April 2016 (Part 2)

Last week was the second London VMware User Group of 2016– and I came away with so many notes I couldn’t justify just squeezing them all into one post. So, check out Part 1 here if you haven’t already and what to know what happened in the morning.

From the agenda I chose to start my afternoon with a look at VMware Virtual Volumes (VVOLs) and how they fit with the offerings from Nimble Storage. Nick Dyer ran through the company background and an overview of their products. One of these was InfoSight Predictive Analytics, this cloud based analytics solution collects data from across Nimble’s entire install base which not only allows them to use your own data to help spot problems and improve performance with your own infrastructure but also the other customers’.

On the VMware front he discussed how VVols abstracts away from the datastore model, allowing the storage vendor to present their capabilities directly up to the virtualisation level using VASA 2.0 technology. A VM is assigned a storage policy and therefore can be hosted on the most appropriate storage at a very granular level- this can affect not only the performance tier the data is placed on but also things like the volume encryption requirements.

Open Homelab Project

Coming Soon…..

After the afternoon break in the (Not Quite on the) Thames Suite we had a round(ish)table discussion about HomeLabs chaired by Alex Galbraith. I’ve mentioned in other posts that the London VMUG community set me on my HomeLab path, and this was a great chance to see what other people were doing and to exchange ideas. There’s a whole range of systems out there, from things like my small NUC-based deployment right through to people with racks of blades in their garden sheds. There are also those using or looking at hybrid or full cloud solutions to exchange that Capex for Opex, although if you turn that under-bed datacentre off you’ll need to heat your house more conventionally in winter . I thoroughly enjoyed this session and it already looks like it will lead to further community discussion and resources – keep your eyes peeled on #OpenHomeLab for more.

My last session of the day was with Neil Andrew from VMware who talked about vRealize Business. A mention of some of the features that morning had piqued my interest, and it’s was great to have this timely opportunity to delve deeper into the technology on offer.

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vRealize Business can help answer those questions such as “How much is a VM costing me?” and “Is it cheaper to relocate this to a cloud provider?”. Although real Chargeback is potentially tricky to implement fully in many organisations, I could see how the idea of Showback is quite achievable and could not only help plan (re)deployments of existing services but also be a valuable tool in planning the budgets for new ones. The customer (internal or external) can be given a real cost of the infrastructure they are requesting, rather than a piecemeal hardware/ licenses/ manpower/ environment/ etc. cost usually calculated on a difficult to maintain spreadsheet.

After the closing statements, and the prize giveaways (including a rather awesome prize of an Anki Overdrive kit from PernixData) we adjourned to the 10-Zig sponsored vBeers where the technical discussions continued.

There’s another London VMUG in a couple of months, and dates for 2017 are already booked in. See you there?

London VMUG dates

Upcoming London VMUG dates


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London VMUG April 2016 (Part 1)

Thursday saw another trip to TechUK for the second London VMware Users Group of the year. It was, yet again, a very educational and entertaining community driven event with sessions covering a whole range of topics from enterprise scale implementations of hardware and software right down to the nitty-gritty of running your own HomeLab.

After the initial welcomes and introductions, the day kicked of with a session from Luca Dell’Oca of Veeam. Entitled “Veeam Backup and Replication: Worst Practices”, this was an often humorous look at what not to do when planning and implementing a backup regime. He covered many of the common mistakes when backing up a virtual environment, and although some parts were product specific (for example how the Veeam scheduler prior to v9 was not optimised for the hundreds of jobs a per-VM backup strategy would involve) there was a lot of generic advice. Highlights for me included

  • Remember that in-guest iSCSI connections will not be touched by VMware snapshots so don’t forget about them when backing up the VMs.
  • Use monitoring tools- in particular keep a close eye on storage space used by snapshots and performance. vCenter performance is critical and can often be a bottleneck.
  • When are other infrastructure tasks scheduled? Don’t run backups when your vCenter SQL maintenance plan is running for example.
  • Find the balance between one backup job per VM and one backup job for all VMs. Group VMs together based on backup policy.
  • Don’t be a cheapskate! Fast, Good, and Cheap is not possible.
  • It’s not necessary to fiddle with every advanced setting. Don’t change what you don’t understand!

Next on the agenda was the Plenary Keynote, where Simon Richardson of VMware went through the new developments in the Software Defined Datacentre portfolio. He pointed out that the only constant is change, and that means there’s always a lot to catch up on.

Simon discussed using the Hyperconverged SDDC as the best of both the traditional DC world and the Google/Facebook/Amazon “extreme” style of datacentre. Applying the analogy of a water company to IT he suggested we want to be in the position where we can turn on a tap and compute comes out.


There’s new features in the vRealize suite as well, vROps producing intelligent workload balancing and Log Insight for diving into the cause of a fault or performance issue.

vRealize Business was a new component for me (more on that later in the day) and I can definitely see the use of being able to show (or chargeback) the actual cost of a VM- taking into account all the factors- environment, hardware, software, support, manpower, and so on. Although there was little OpenStack adoption in the audience, Simon also touched on VIO- VMware Integrated OpenStack.

After a quick break in the Thames Suite (named in honour the breakroom in the previous London VMUG venue 🙂 ) I caught up with VSAN in more depth in a talk by Simon Todd (and earned some Cloud Credibility points along the way). VMware’s Virtual SAN is getting wider and wider adoption, even branching outside of the traditional Datacentre environment into Offshore Oil Rigs and even Submarines. This is more than just Business critical this really is Mission critical. The ability to deploy (and scale) large arrays quickly is a key selling point, multipetabyte arrays spun up in a matter of minutes and customers who had cut both costs and deployment times.

@MrVirtualSAN at @LonVMUG

What was my vmdk on VSAN up to at 4am last night? A user complained their service was slow.

Moving a bit more into the technical detail- Simon explained how VSAN is an object store with each VMDK, each file, becoming an object. This allows for per-object policy, so performance, IOPS limits, and resilience can be set, and then monitored, at the VMDK level. When pushing for that ultimate performance, this granularity could be of great benefit.

That brought us to the halfway point in the day’s proceedings, where there was lunch an and opportunity to catch up with the events sponsors- PernixData, Veeam, and Nimble Storage.

London VMUG dates

Upcoming London VMUG dates

Edit- Part 2 can be found here.