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Hyper-V 2016

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Trailblazer

Re: Hyper-V 2016

"Tenative target is the next 30 days or less. My feeling is that it will be a day with "teen" in the name,"

Is that a November "teen" or a December "teen"?

 

Nothing in particular for hyper-v but wodnering how we will be able to upgrade to 2016 with a 3 node cluster. 2016 has a rolling upgrade feature but we would still be missing out on some features like REFS etc as the cluster storage would have already been formatted. 

 

http://myvirtualcloud.net/?p=8310

Hoping that Part 2 will have some Hyper-V specific features

 

We could also move to AHV for our new setup but even that would create a challenge for us namely:

 

  • the ability to perform backup using our VEEAM backup server
  • using our APC UPS to shutdown the servers cleanly (Still haven't find an easy and documented way to do that from an APC UPS)

 

A 3 tier infrastrucure has it downside but I can't see how this would be possible with a 3 nodes nutanix cluster (Actually even with more nodes)

 

RIght now we have 3 Servers running Hyper-v and on a Power outage, after 30 minutes, we live migrate all VMS from one server and then shut it down to give us more runtime, after another 30 minutes, the same scenario happens until there is only 20-30 minutes left and then all vms are turned off and the last server is then shut down as well. When power is restored, all servers are then powered up and re-balanced automatically without me having to ping a Server or Storage. Doing this with CVM would be suicide i reckon...

 

 

Moderator Moderator
Moderator

Re: Hyper-V 2016

RE Asterix Date

I see you caught my dry humor joke. Internally we're targetting the month of November, but this is a really, really big release, so we want to get it right.

 

RE Hyper-V 2016

I've forwarded this over to our PM for Hyper-V, so he can respond in more detail cc @Raymon

 

Here's my 2 cents: Keep in mind that Hyper-V 2016 is an absolutely massive new release from Microsoft, which will fundamentally have different considerations for how Nutanix integrates. There are many things to consider; however, the largest is Microsoft's DDA, which is their version of PCI Passthrough. 

 

As you might know, Nutanix uses direct PCI Passthrough of the SAS controller on ESXi, AHV, and XenServer. Hyper-V does not have this same capability in 2012 R2, so we take a different approach currently. We've been clamoring for PCI passthrough for years, to standardize the disk connectivity approach between all four hypervisors we support, and Microsoft is now allowing this in 2016.

 

That said, Unlike ESXi and AHV, it isn't just a simple passthrough, it requires guest OS kernel changes to support the DDA-enabled devices, so we've had to patch those in, which takes some qualification time.

 

That's just one low hanging example of what we've got to work through to get 2016 enabled correctly.

 

RE Hyper-V specific features

Are you looking for something specifically? Or wanting the system to do something it doesn't today? I'm happy to investigate or advocate on your behalf, just let me know.

 

RE Veeam + AHV

We've talked about this in the past, the ball is in Veeam's court on this one.

 

RE APC + AHV

APC would need to do work to enhance their PowerChute network shutdown product, that's really the best way to do that. I'll ask our alliances folks to see if we're working with them already.

 

RE Shutdown sequence

Yes, that would be a challenge with Nutanix (or most SDS products), as in your 3 node cluster, its N+1, so you'd be able to do that with one node, then the whole thing would need to be gracefully shutdown.

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
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Trailblazer

Re: Hyper-V 2016

Hi @Jon

 

any feedback from @Raymon regarding rolling cluster upgrade?

 

Moderator Moderator
Moderator

Re: Hyper-V 2016

I sent him and the PM team an email to get some clarification on this one. I'll bet "yes", but again, this is a massive massive massive shift on Microsoft's part, I have a feeling this is going to be tricky. Looking forward to what Engineering pulls off.

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
Please Kudos if useful!
Moderator Moderator
Moderator

Re: Hyper-V 2016

word from product management is that yes, this is the plan to support rolling upgrades from 2012 to 2016. Since the feature isn't done yet, we'll have to wait a bit to see exactly what that looks like

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
Please Kudos if useful!
Explorer

Re: Hyper-V 2016

Just adding my name to list of people eager to see this; I'm been holding off implementing our new block as I'd sooner have 2016 "from the begining" rather than upgrading the block at a later date. 

 

Trailblazer

Re: Hyper-V 2016

Me too!

Especially if the container has to be formatted as REFS from the get go! I don't think it will be possible to upgrade from NTFS to REFS without destroying the cluster first hence why we are waiting as well.

 

Now if AHV had VEEAM support we wouldn't be waiting :-p

 

 

Moderator Moderator
Moderator

Re: Hyper-V 2016

RE File system

eh, what? The container is not formatted with NTFS now, nor any other windows file system, so we couldn't format it with REFS even if we wanted to. 

 

The container is presented, from a protocol perspective, with SMB3. The actual formatting on the filesystem is invisable to windows. 

 

Much like doing a SMB share from a linux box running a XFS or ZFS file system, or ext or something like that, the protocol and the underlying file system are not coupled together.

 

RE Veeam

You've got that sentence in reverse ... more like if Veeam had AHV support, and let you read into that what you will. Very simply put, we're waiting on them, not the other way around.

 

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
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Trailblazer

Re: Hyper-V 2016

Understood! I thought that the container was presented as storage to Windows cluster and we would them need to format it! That makes sense and as long as Nutanix will support cluster rolling upgrade, then we don't have to wait any more time and deploy 2012 R2 and upgrade afterwards. If we were to do it that way, will we be missing any features from an upgrade to 2012 r2 compared to a full install of 2016?
Moderator Moderator
Moderator

Re: Hyper-V 2016

It is presented to the cluster as storage, but its SMB3 volume, not a block device that needs to be formatted.

 

As far as upgrades and such, thats not defined yet, we know we want to support rolling upgrades, but as I mentioned in a prior post, we haven't completed the work on 2016 yet, so we'll have more clarity as time goes on there.

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
Please Kudos if useful!