BC-DR

Startup intro: SaaS-based backup solution Clumio

Duncan Epping · Apr 6, 2020 ·

Last week I saw an update from one of the Clumio founders on twitter. It reminded me that I had promised to take a look at their product. This week I had a meeting set up with Clumio and we went over their product and how to configure it briefly. Clumio is a SaaS based backup solution that was founded in 2017 by former PernixData, Nutanix, EMC folks. The three founders are Poojan Kumar, Kaustubh Patil, and Woon Jung, and those three you may remember from PernixData. One thing to point out is that they had 3 rounds of funding (~190 million dollars) so far and they came out of stealth around VMworld 2019. Coincidentally they won the Gold award for Best of VMworld in the data protection category, and best of show for the entire show, not bad for a first VMworld. I guess that I have to point out that although I would classify them as backup/recovery today, they are adding new functionality weekly and “backup/recovery” is probably not a fair category, data protection is more appropriate and it would not surprise me if that evolves to data management and protection over time. If you are not a fan of reading, simply head over to my youtube video on Clumio, otherwise, just continue below.

So how does it work conceptually? Well they basically have a SaaS solution, but you will need to install an OVA (they call it a cloud connector) in your environment to connect to the SaaS platform for VMware on-premises and VMware Cloud on AWS. When you connect AWS EBS they use a cloud formation template. This cloud connector is a 4 vCPU/8GB virtual machine that then needs the ability to connect to “the outside world” of course. The Cloud Connector is stateless and requires no updates. You can run this Cloud Connector appliance in multiple clusters, on-prem, or in VMware Cloud on AWS and once they are registered you will see those data sources in your portal. This is nice as you can see all your data sources across public and private clouds in one single pane of glass. You will have the ability to define “backup schemes” by creating policies. These policies can of course then be associated with objects. These objects can be VMs, Clusters and even vCenter Server instances. This means that if you assign a policy to vCenter Server that every new VM created will inherit the policy automatically. You may wonder, where is your data stored? Your data is stored in S3 buckets that are part of the Clumio SaaS-based platform. Customers are isolated from each other, they will have their own dedicated S3 buckets, and these buckets are created and maintained by Clumio, you as a customer only interact with Clumio! [Read more…] about Startup intro: SaaS-based backup solution Clumio

Install and Configure vSphere Replication with SRM 8.3 on vSphere 7

Duncan Epping · Apr 2, 2020 ·

I haven’t really done much with vSphere Replication and Site Recovery Manager (SRM) in the past years as my main focus has been vSAN. I figured I would get two clusters up and running and install and configure both vSphere Replication as well as SRM on top of vSphere 7. Although the installation and configuration are pretty straight forward, there are a few steps which are important. Below the steps I took to get things up and running.

Deploy the vSphere Replication appliance in both clusters
Deploy the Site Recovery Manager appliance in both clusters
Go to “https://<ip of vSphere Replication appliance>:5480” in first cluster
- username: root
- password: what ever you specified!
Click on “Configuration Page” link
Specify Password of vCenter Server in the Password field
Click “Apply Network Settings”
Click “Save and Restart Service”
Accept the SSL Certificate
Repeat the above for the second cluster!
Now go to your vSphere H5 Client and wait until the vSphere Replicated tasks are completed
Log out of the vSphere H5 Client and log back in for both clusters
Now go to the first cluster / vCenter server
Now click on “Menu” and then “Site Recovery”
Click “open Site Recovery”
Click “New Site Pair”
Fill out the details of the second vCenter Server
Click Next and Connect if you get a security alert and are certain this is the correct vCenter instance
Select the correct listed vCenter instance and vSphere Replication appliance
Click Next and Finish, now you will see a task within vCenter that states “Connect vSphere Replication Sites”
Now you have vSphere Replication running and you can replicate VMs from one location to the other manually if and when desired.

Creating a vSAN 7.0 Stretched Cluster

Duncan Epping · Mar 31, 2020 ·

A while ago I wrote this article and created this demo showing the creation of a vSAN Stretched Cluster. I bumped into the article/video today when I was looking for something and figured that it is time to recreate the vSAN Stretched Cluster demo. I recorded it today, using vSphere / vSAN 7, and just wanted to share it with you here. Hope you enjoy it.

Can I still provision VMs when a vSAN Stretched Cluster site has failed? Part II

Duncan Epping · Dec 18, 2019 ·

3 years ago I wrote the following post: Can I still provision VMs when a VSAN Stretched Cluster site has failed? Last week I received a question on this subject, and although officially I am not supposed to work on vSAN in the upcoming three months I figured I could test this in the evening easily within 30 minutes. The question was simple, in my blog I described the failure of the Witness Host, what if a single host fails in one of the two “data” fault domains? What if I want to create a snapshot for instance, will this still work?

So here’s what I tested:

vSAN Stretched Cluster
4+4+1 configuration
- Meaning, 4 hosts in each “data site” and a witness host, for a total of 8 hosts in my vSAN cluster
Create a VM with cross-site protection and RAID-5 within the location

So I first failed a host in one of the two data sites. When I fail the host, the following is what happens when I create a VM with RAID-1 across sites and RAID-5 within a site:

Without “Force Provisioning” enabled the creation of the VM fails
When “Force Provisioning” is enabled the creation of the VM succeeds, the VM is created with a RAID-0 within 1 location

Okay, so this sounds similar to the originally described scenario, in my 2016 blog post, where I failed the witness. vSAN will create a RAID-0 configuration for the VM. When the host returns for duty the RAID-1 across locations and RAID-5 within each location is then automatically created. On top of that, you can snapshot VMs in this scenario, the snapshots will also be created as RAID-0. One thing to mind is that I would recommend removing “force provisioning” from the policy after the failure has been resolved! Below is a screenshot of the component layout of the scenario by the way.

I also retried the witness host down scenario, and in that case, you do not need to use the “force provisioning” option. One more thing to note. The above will only happen when you create a RAID configuration which is impossible to create as a result of the failure. If 1 host fails in a 4+4+1 stretched cluster you would like to create a RAID-1 across sites and a RAID-1 within sites then the VM would be created with the requested RAID configuration, which is demonstrated in the screenshot below.

VMworld Reveals: Disaster Recovery / Business Continuity enhancements! (#HCI2894BU and #HBI3109BU)

Duncan Epping · Sep 4, 2019 ·

At VMworld, various cool new technologies were previewed. In this series of articles, I will write about some of those previewed technologies. Unfortunately, I can’t cover them all as there are simply too many. This article is about enhancements in the business continuity/disaster recovery space. There were 2 sessions where futures were discussed, namely HCI2894BU and HBI3109BU. Please note that this is a brief summary of those sessions, and these are discussing a Technical Preview, these features/products may never be released, and these previews do not represent a commitment of any kind, and this feature (or it’s functionality) is subject to change. Now let’s dive into it, what can you expect for disaster recovery in the future?

The first session I watched was HCI2894BU, this was all about Site Recovery Manager. I think the most interesting part is the future support for Virtual Volumes (vVols) for Site Recovery Manager. It may sound like something simple, but it isn’t. When the version of SRM ships that supports vVols keep in mind that your vVol capable storage system also needs to support it. At day 1 HPe Nimble, HPe 3PAR and Pure Storage will support it and Dell EMC and NetApp are actively working on support. The requirements are that the storage system needs to be vVols 2.0 compliant and support VASA 3.0. Before they dove into the vVols implementation, some history was shared and the current implementation. I found it interesting to know that SRM has over 25.000 customers and has protected more than 3.000.000 workloads over the last decade.