Don't Throw Away Your Physical Servers Just Yet
Summary: You'll need to keep some physical systems around for those workloads that can't go virtual. And, be sure to keep a horse and buggy around when that whole automobile thing doesn't work out too.
Oops! Did you get rid of ALL your physical systems so that you could convert every workload in your data center to a virtual one? Yeah, you might want to rethink that one and go grab a few physicals just to tide you over until virtualization takes a bigger technological leap. Yes, I am a virtualization advocate. Yes, I am a cloud advocate. Yes, I am a virtualization writer. Yes, I work with virtual machines and hosts on a daily basis. And, yes, I'm a realist. Some would go so far to say that I'm a pessimist.
I'm not pessimistic about virtualization, the cloud or server consolidation. But, I am pessimistic about your company's ability to wean itself off of physical systems.
I hear and read too many complaints about virtualization performance, legacy systems and blah, blah, blah--so much so that I'm saying, OK, maybe you should just keep some of your damn physical systems on hand to make yourself feel better. Because as everyone knows, or should know, there are just some workloads that can't be virtualized. I know you have one that absolutely can't be virtualized because it's different or special in some unique way that just wouldn't lend itself to virtualization.
Uh, OK. Whatever.
VMware begs to disagree on that point and they would be the one to know. But, hey, your non-technical executives and project managers know more than the people who brought server virtualization to the Data Center.
So, please--pretty please, don't throw away your physical servers just yet, just in case you have some workload that can't be virtualized.
That legacy application that should have been updated eight years ago or that Windows NT 4.0 system that you just can't take away must remain physical. It's OK, I've heard it all before. You're absolved of any wrongdoing or mismanagement. After all, I don't have to pay your bills. Or listen to the moans and groans of keeping that old garbage alive. And, it's a critical piece of garbage that your business depends on. Good job on that. You deserve a promotion for your proactive work, your acute business insight and your ability to keep that mission-critical up and running no matter what the cost.
And, you had better be glad you don't work for me.
My best advice, other than keeping those physical systems around, is to engage VMware, Citrix, the Open Virtualization Alliance or Fred the Virtualizer down the street to give you some direction in bringing your application up to date and migrating it to virtual architecture before it flops so hard that even Dr. Oz can't revive it.
So, talk back and tell me, are you still keeping physical systems around for those workloads that you just can't virtualize? I'd also love to know if you've engaged one of the companies that can help you move that workload to a virtual environment and the outcome.
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Talkback
Save us from consultants on a crusade.
RE: Don't Throw Away Your Physical Servers Just Yet
It's more of a tizzie or hissy fit than a full-blown lather.
RE: Don't Throw Away Your Physical Servers Just Yet
More puerile than that, I think it was just a bitching session because he missed out on a contract.
RE: Don't Throw Away Your Physical Servers Just Yet
- Tell you what we are using (beta testing) Citrix Receiver to bring in our legacy apps that cannot be moved the cloud and to use office, becasue Google docs does not quite cut it yet. That slow response (inside the company) is a fignament of our imagination and we can ignore it...
RE: Don't Throw Away Your Physical Servers Just Yet
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RE: Don't Throw Away Your Physical Servers Just Yet
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RE: Don't Throw Away Your Physical Servers Just Yet
RE: Don't Throw Away Your Physical Servers Just Yet
"VM latency?"
I don't understand how you could have VM latency. In EVERY case, at my place of work, a virtual server is faster and more responsive, even when virtualized on top of its own original hardware.
Unless... You may be trying to use that garbage from MS. Try VMware, even the free version, and you can't help but be impressed.
For disaster recovery, we individually image each VM with Acronis each night. If something bad happens, we can use VMware Converter to directly convert the Acronis backup image into a running and fully-functional VMware virtual machine. I can't imagine ever wanting to run a dedicated, OS-on-metal, server ever again. I even use the same combination on my home (hobby) server (PC), which is a cheap 3-core AMD, and it's running 5 game-server VMs a full capacity most nights.
Virtualization is the ONLY way, in my opinion. The only ones who would probably disagree are the ones trying to sell you more low-end hardware.
RE: Don't Throw Away Your Physical Servers Just Yet
"a virtual server is faster and more responsive"
Pull the other one...
RE: Don't Throw Away Your Physical Servers Just Yet
I'm guessing that you work for VMWare as your post sounds like a copy and pasted VMWare website testimonial. Seriously.
I've tried a few virtual machine packages and always have seen some small amount of latency. And I've tried both Windows and Linux as hosts for those packages.
RE: Don't Throw Away Your Physical Servers Just Yet
I have trouble with the premise of this whole post. :)
Dan K
Exececutives vs VMware...
Virtualization requires more hardware, not less
Not too fond of virtualizing Active Directory Domain Controllers either, but that is a risk perception issue than a hard limit. I like my domain controllers to always be the first applications up and running after a system-wide shutdown.
Many SQL loads for decision support systems virtualize just fine. Low volume OLTP as well.
As long as you invest the money on good VM hosts (i.e. triple digit RAM and multi-proc, multi-core) you can virtualize quite a bit. There are workloads that can't, sure. But without a good investment in VM hosts, and VM software everything comes crashing down.
Virtualized DCs
I was hesistant as well, but we did both of ours a couple of years ago (I used one physical and one virtual for a while to test) and it's been running great. We keep a decent extra capacity of resources, and every once in awhile I manually move the DC to a server that has a few less VMs than the others.
It's scary at first, but you'll find it works pretty flawlessly on a properly set up VM environment, which it sounds like you have a good understanding of.
RE: Don't Throw Away Your Physical Servers Just Yet
RE: Don't Throw Away Your Physical Servers Just Yet
That's a pretty good plan, actually.
RE: Don't Throw Away Your Physical Servers Just Yet
I didn't miss out on anything.
RE: Don't Throw Away Your Physical Servers Just Yet
updating the old app...
Today I'm dealing with an app that "requires" XP. I have begged the vendor to please make this native to win 7 AND port a client to Linux.
All we get are the occasional "updates" that are little more than shoving buttons around on the screen, probably to make the appearance of change. In reality it just angers the poor end users. (who btw tell me some functionality has actually been lost)
I have to deal with more than one application that from all observation must have spontaneously assembled itself and emerged from a stone wall.
I deal with one vendor that shunts you to an answering machine every call. The ONLY calls they return are when you tell them you need to buy another license. And the call back is almost immediate, so you know someone is sitting there screening it.
btw the app here will not run properly on vista in compatibility mode, but does run satisfactorily on win 7 in XP mode. Thank God.