Somethings You Need To Know About Hyper-V
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@Dashrender said:
Can you log into the Hyper-V hypervisor while the VM that is the DC is down?
Can you log in to your workstation when the DC is down?
The answer is of course you can. Windows caches credentials. Always has.
Even if you somehow have been down so long that cached credentials no longer work, it is just like any other windows system ever made. Log in with the local account.
All of that said though, if you properly configured your Hyper-V server to launch the various guests at power on, then this will not be an issue anyway.
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@Dashrender said:
Can you log into the Hyper-V hypervisor while the VM that is the DC is down?
I should add this to the list of myths. I forgot how often people feel that HyperV either is required to be on a domain or that being on a domain makes it super fragile. You can do HyperV standalone if you want or, as @JaredBusch points out, lacking AD does not stop you from logging into a machine.
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@scottalanmiller said:
@Dashrender said:
Can you log into the Hyper-V hypervisor while the VM that is the DC is down?
I should add this to the list of myths. I forgot how often people feel that HyperV either is required to be on a domain or that being on a domain makes it super fragile. You can do HyperV standalone if you want or, as @JaredBusch points out, lacking AD does not stop you from logging into a machine.
Hyper-V is DESIGNED to be on a domain. So that is the best way to manage it. But as with anything else Windows, a domain is not required.
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@JaredBusch said:
Hyper-V is DESIGNED to be on a domain. So that is the best way to manage it. But as with anything else Windows, a domain is not required.
Sure, not disagreeing there. It's generally the best way to go. But if you are on a workground or have no AD or whatever, those aren't barriers to HyperV.
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It sounds like it might be feasible to run a free Hyper-V host without any sort of Windows VM involved... As I am a fan of irony, I may just have to try it and see what I can do with ManageEngine's Hyper-V configuration tool (the best free option Google has found for me so far).
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@WingCreative said:
It sounds like it might be feasible to run a free Hyper-V host without any sort of Windows VM involved... As I am a fan of irony, I may just have to try it and see what I can do with ManageEngine's Hyper-V configuration tool (the best free option Google has found for me so far).
Absolutely. There is no Windows dependency in HyperV whatsoever. You can use HyperV for a Linux only system top to bottom.
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And there are even businesses cases where that would make sense. Not a ton, but they exist.
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@scottalanmiller Fate is not without a sense of irony.
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@WingCreative said:
It sounds like it might be feasible to run a free Hyper-V host without any sort of Windows VM involved... As I am a fan of irony, I may just have to try it and see what I can do with ManageEngine's Hyper-V configuration tool (the best free option Google has found for me so far).
It would be an odd & rare choice though, if you're only going to use linux. You'd likely get better preformance out of other hypervisors and better management.
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@thecreativeone91 said:
@WingCreative said:
It sounds like it might be feasible to run a free Hyper-V host without any sort of Windows VM involved... As I am a fan of irony, I may just have to try it and see what I can do with ManageEngine's Hyper-V configuration tool (the best free option Google has found for me so far).
It would be an odd & rare choice though, if you're only going to use linux. You'd likely get better preformance out of other hypervisors and better management.
It sounds more odd than it is. Yes, Xen will beat anyone at that workload. But SMBs just don't have a need for performance. They all think that that matters, but it doesn't. Losing 1% to overhead is not noticeable to 99.99% of SMBs. And even fewer of the ones using only one server. And if that really is a factor, you can overcome it with a few dollars of additional hardware on that one server.
What HyperV brings to the table that XenServer lacks is free backup utilities that are end user friendly like Unitrends and Veeam. These are lacking on XenServer. Nearly everyone needs backup, almost no one needs the extra performance. So in those rare cases where you are an SMB, have only one server and need everything to be Linux, there is actually a reasonable chance that HyperV might make more sense.
Of course, XenServer should be more stable there, a tiny bit faster, easier to manage and if you are 100% Linux you can probably figure out backups on your own since XS supports that. But it stills leaves space for HyperV to play nicely.
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@scottalanmiller said:
@thecreativeone91 said:
@WingCreative said:
It sounds like it might be feasible to run a free Hyper-V host without any sort of Windows VM involved... As I am a fan of irony, I may just have to try it and see what I can do with ManageEngine's Hyper-V configuration tool (the best free option Google has found for me so far).
It would be an odd & rare choice though, if you're only going to use linux. You'd likely get better preformance out of other hypervisors and better management.
It sounds more odd than it is. Yes, Xen will beat anyone at that workload. But SMBs just don't have a need for performance. They all think that that matters, but it doesn't. Losing 1% to overhead is not noticeable to 99.99% of SMBs. And even fewer of the ones using only one server. And if that really is a factor, you can overcome it with a few dollars of additional hardware on that one server.
What HyperV brings to the table that XenServer lacks is free backup utilities that are end user friendly like Unitrends and Veeam. These are lacking on XenServer. Nearly everyone needs backup, almost no one needs the extra performance. So in those rare cases where you are an SMB, have only one server and need everything to be Linux, there is actually a reasonable chance that HyperV might make more sense.
Of course, XenServer should be more stable there, a tiny bit faster, easier to manage and if you are 100% Linux you can probably figure out backups on your own since XS supports that. But it stills leaves space for HyperV to play nicely.
This is pretty much my reasoning @thecreativeone91 - I'm tired of checking out things like Veeam B&R and realizing that I can't use it on my current hypervisor of choice because they only support "all major hypervisors"... AKA VMware and Hyper-V.
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@WingCreative said:
I'm tired of checking out things like Veeam B&R and realizing that I can't use it on my current hypervisor of choice because they only support "all major hypervisors"... AKA VMware and Hyper-V.
This is a difference in ecosystem mentality. If you use XenServer, don't get third party tools, use what is provided for you. If you use HyperV or VMware, assume you need third party tools to do the job.
XS doesn't need a backup utility, backups are baked in, but they are more limited. It's not that needing Unitrends (which doesn't work on ESXi Free either!!) or Veeam isn't okay, it's just that you need to go into XS assuming the product is the product and that the VMware mentality of the application just being the first piece isn't going to work. Can you get third party tools for XS? Yes, of course. But don't go into it thinking that way. All the basics are there, if they are what you need, done. If not, it's probably the wrong tool set.
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Makes sense - Mainly for now I just want the ability to tell potential clients that it's not just me and my configurations making sure their data is backed up automatically, and I really like the idea of my backup application testing itself regularly. I will probably have both hypervisors running once I can snag another test server and do some side-by-side feature comparisons.
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@WingCreative said:
Makes sense - Mainly for now I just want the ability to tell potential clients that it's not just me and my configurations making sure their data is backed up automatically....
It's always like that. At the end of the day, whether you are configuring built in backups or third party ones, it is you and your config that they have to trust.
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I personally love Hyper-V - I started using it on Server 2008, and it was ...ok at that time, but it ran. Now, when Server 2008 R2 came out, Hyper-V introduced High Availability and volume shared clustering, and it worked splendidly for us. Unfortunately, I never got the opportunity to work with this on any automated level, but it was fantastic when we had planned building outages and needed to migrate our servers to our secondary server node.
It's always been easy to set up - my only beef with it is the built-in GUI management tools. You can manage Hyper-V Server 2008 & 2008 R2 from a Windows 7/2008 box, but if you want to manage 2012, you need Windows 8/2012. There are other tools available (5nine Hyper-V Manager works great) - - but, it's annoying.
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Seems like an appropriate thread to throw out this question: Has anyone here used Hyper V Replica? We're currently in the process of moving all of our production web sites and apps to a new Hyper V server and are considering
- Using Hyper V Replica to back up our production VMs to a 2nd server
or - Using Hyper V Replica to back up to Azure, which runs $54 a month per VM.
Curious to know what the popular opinion is. Being able to click a few times on a production VM and have it replicate only the changes ( deltas ), asynchronously, well it just sounds like God's gift to server newbs like me.
Our database component ( MySQL ) is independent and run off of the Amazon cloud, so the 30 second delay between delta sends shouldn't be an issue because both the main and replicated VMs will be connecting to the same external datasources.
- Using Hyper V Replica to back up our production VMs to a 2nd server
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@GregoryHall works with this. I'll ping him.
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I have a client that is using Veeam to create replicas. I do not know anyone using the built in functionality.
Most of my clients do not have the need for this type of setup.
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I just want to confirm that this Microsoft rep is misinformed. He claims that shutting off the Hyper V service ( say on a laptop in Windows 8 ) will make the host OS's performance identical to if Hyper V wasn't even installed, which flies in the face of the conversion-to-VM process that happens according to the discussions here on Mango.
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@creayt said:
I just want to confirm that this Microsoft rep is misinformed. He claims that shutting off the Hyper V service ( say on a laptop in Windows 8 ) will make the host OS's performance identical to if Hyper V wasn't even installed, which flies in the face of the conversion-to-VM process that happens according to the discussions here on Mango.
He is crazy and that's not how it works. It's not a service at all, its a hypervisor. How could it be a service? That's not even possible. And this is just a community, he's denying Microsoft's own documentation, it's not like he's staff. There is a service, but the service isn't the hypervisor. He's providing a placebo and trying to blow the OP off assuming that he will never notice.
What CAN happen is that you can remove the role and launch with the OS on bare metal then reinstall. You could, in theory, make a dual boot system that boots HyperV or the OS directly depending on what you want to do but I don't know specifically how that would be done but technically the possibility is there.
Looping in the actually MS rep @gregoryhall
