Tech Preview: vCenter Site Recovery Manager with ActiveCluster

An increasingly common use case for Active-Active replication in vSphere environments is vSphere Metro Storage Cluster (vMSC) which I wrote about in this paper recently:

https://support.purestorage.com/Solutions/VMware_Platform_Guide/002ActiveCluster_with_VMware/PDF_Guide%3A_Implementing_vSphere_Metro_Storage_Cluster_With_ActiveCluster

This overviews how a stretched vSphere cluster interacts with the active-active replication we offer on the FlashArray called ActiveCluster. Continue reading Tech Preview: vCenter Site Recovery Manager with ActiveCluster

VVol VMUG Webinar Q&A Follow Up

I recently did a VMUG webcast on VVols and there were a ton of questions and unfortunately I ran out of time and could not answer a lot of them. I felt bad about that, so I decided to follow up. I was going to send out emails to the people who asked, but figured it was simpler and more useful to others to just put them all here.

See the VMUG VVol webinar here:

https://www.gotostage.com/channel/13896d6cf6304fddab1a485982c915dc/recording/762f0dccfe1c4406a0e5b58fea449e80/watch

You can get my slides here.

Questions:

Would VVols replace the requirements for RDM’s?

Answer:  Maybe. It depends on why you are using RDMs. If it is simply to allow sharing or overwriting between physical and virtual. VVols will replace RDMs. If it is to make it easier to restore from array snapshots, VVols will replace them. If it is for Microsoft Failover Clustering, VVols are not supported with that yet. You still need RDMs. Though VMware is supposed to be adding support for this in the next release. See this post for more info. Continue reading VVol VMUG Webinar Q&A Follow Up

Required vCenter Permissions for Registering a VVol VASA Provider

I’ve had a few customers ask me what are the minimum vCenter permissions required to register a VVol VASA provider. The use case is, I want my storage admin to be able to do it, but I don’t want them to do anything else.

While this can be done in a very slick way with vRealize Automation (more on that in a later post), this can be done with standard vCenter permissions too. Continue reading Required vCenter Permissions for Registering a VVol VASA Provider

What is the latency stat QAVG?

I wrote a blog post a year or so ago about ESXi and storage queues which has received a lot of wonderful feedback (thank you!!) and I eventually turned it into a VMworld session and other engagements:

So in the past year I have had quite a few discussions around this. And one part has always bothered me a bit.

In ESXI, there are a variety of latency metrics:

  • GAVG. Guest average. Sometimes called “VM observed latency”. This is the amount of time it takes for an I/O to be completed, after it leaves the VM. So through ESXi, through the SAN (or iSCSI network) and committed to the array and acknowledged back.
  • KAVG. Kernel average. This is how long an I/O is spending in the ESXi kernel. If this is anything but zero, there is some kind of bottleneck (often a maxed out queue)
  • DAVG. This is how long it takes for the I/O to be sent from host, through the SAN and to the array and acknowledged back.

Continue reading What is the latency stat QAVG?

vRealize Orchestrator VVol Workflow Package

Ok finally! I had this finished awhile ago, but I wrote it using our version 2.0 plugin–so I couldn’t post it until the plugin was certified by VMware. That plugin version is now certified and posted on the VMware Solution Exchange (see my post here).

Moving forward, we will likely be posting new workflows in various packages (working on an ActiveCluster one now), instead of including them directly in our plugin. This will make it easier to update them and add to them, without also having to generate an entire new plugin version.

So first, download and install the v2 FlashArray plugin for vRO and then install my workflow package for VVol on the VMware Solutions Exchange:

https://marketplace.vmware.com/vsx/solutions/flasharray-vvol-workflow-package-for-vro-1-0?ref=search 

Continue reading vRealize Orchestrator VVol Workflow Package

FlashArray Plugin 2.0 for vRealize Orchestrator

We have published the FlashArray plugin 2.0 for vRealize Orchestrator on the VMware Solutions Exchange! Download it here:

https://marketplace.vmware.com/vsx/solutions/pure-storage-flasharray-plugin-for-vmware-vrealize-orchestrator-2-0-0

We put a lot of work into this one and I am quite excited for customers and partners to start using it.

There are three primary enhancements:

  1. New workflows
  2. New actions
  3. New scriptable objects

Continue reading FlashArray Plugin 2.0 for vRealize Orchestrator

VMware Capacity Reporting Part V: VVols and UNMAP

Storage capacity reporting seems like a pretty straight forward topic. How much storage am I using? But when you introduce the concept of multiple levels of thin provisioning AND data reduction into it, all usage is not equal (does it compress well? does it dedupe well? is it zeroes?).

This multi-part series will break it down in the following sections:

  1. VMFS and thin virtual disks
  2. VMFS and thick virtual disks
  3. Thoughts on VMFS Capacity Reporting
  4. VVols and capacity reporting
  5. VVols and UNMAP

Let’s talk about the ins and outs of these in detail, then of course finish it up with why VVols makes this so much better.

NOTE: Examples in this are given from a FlashArray perspective. So mileage may vary depending on the type of array you have. The VMFS and above layer though are the same for all. This is the benefit of VMFS–it abstracts the physical layer. This is also the downside, as I will describe in these posts.

Continue reading VMware Capacity Reporting Part V: VVols and UNMAP

VMware Capacity Reporting Part IV: VVol Capacity Reporting

Storage capacity reporting seems like a pretty straight forward topic. How much storage am I using? But when you introduce the concept of multiple levels of thin provisioning AND data reduction into it, all usage is not equal (does it compress well? does it dedupe well? is it zeroes?).

This multi-part series will break it down in the following sections:

  1. VMFS and thin virtual disks
  2. VMFS and thick virtual disks
  3. Thoughts on VMFS Capacity Reporting
  4. VVols and capacity reporting
  5. VVols and UNMAP

Let’s talk about the ins and outs of these in detail, then of course finish it up with why VVols makes this so much better.

NOTE: Examples in this are given from a FlashArray perspective. So mileage may vary depending on the type of array you have. The VMFS and above layer though are the same for all. This is the benefit of VMFS–it abstracts the physical layer. This is also the downside, as I will describe in these posts. Continue reading VMware Capacity Reporting Part IV: VVol Capacity Reporting