PayPal To Replace VMware With OpenStack
Julie188 writes "This should make VMware nervous. PayPal and eBay are yanking VMware software from some 80,000 servers and replacing it with OpenStack. Initially, PayPal is replacing VMware on about 10,000 computer servers. Those servers will go live this summer."
VMware is not in a monopoly position anymore and can no longer dictate prices to people who have free alternatives.
http://www.openstack.org/user-stories/paypal/
Theres something wrong with VMware that makes it think it can charge more for virtualization software than the hardware it is replacing. They need their asses handed to them for a few years to put them back in their place.
Persistent Volume manager for Kubernetes - https://github.com/dwimsey/openshift-pvmanager
Open source winning again....
Soon all software companies will be bankrupt and you won't be able to find a job developing software at any price
You work at a software shop where you sell custom software "solutions"!
"When life gives you lemons, don't make lemonade. Make life take the lemons back!" -- Cave Johnson
Don't respond to obvious trolls.
OpenStack is not a hypervisor though. How could it be a direct replacement. Sounds like there is something missing.
Oh, you want it free?
OK, here you go: http://www.vmware.com/products/vsphere-hypervisor/overview.html
All that ranting, and all you needed to do was ask.
Those who can, do.
Being a non-profit or "not for profit" corporation does not mean that the employees and board members work for a pittance. Take a look at the salaries for Goodwill and the Red Cross and United Way in the San Diego area. Each chair makes more than $300,000.00 per year, sometimes substantially more when you include their "car allowance" and "living allowance" and "competitive allowance". A lot of their other employees are also extremely well paid. So there's no need to worry about "non-profit" behemoths like these not getting any sort of serious discount.
Hi
Speaking as someone who spends 100% of their working week in VMware it's no biggie. A (very) small group of us look after a stack just as big as that.
With MS entreprise agreements that mean you now have to a seperate for each socket in the cluster (ie when DRS moves the guest to another cluster node or you get a host failure and HA kicks in) it costs an awful lot and also makes Hyper V looks more enticing to the bean counters as the Enterprise comes with all the Hyper V management tools..
VMware realise they cannot compete on cost and they have said as much. No matter what you say about Hyper V I have seen some nasty failures that just wouldn't happen in VMware (and lets not forget host failures can mean loosing 30 guests at one time (Lets not go into allowable failure scenarios..)
I have seen a Hyper V guest mentally shit itself and cause the host to fail in such a manner that the failed machines didn't restart. So rather than have a restart on another cluster member a guest was able to take out a host. Just wouldn't happen with VMware and it's highly advanced Virtual Machine Manager. VMware also has awesome other features including shared memory paging etc etc.
Big business craves stability over saving a few hundred bucks per machine. However VMware are coming up with interesting new stuff and more interestingly the more advanced features are flowing down into more basic editions.
Just my 2 cents.
http://www.writeitfor.us - Writing IT for the IT generation.
So OpenStack is a management set of tools to manage a cloud, not a hypervisor, which VMWare, as generally accepted vernacular is. What hypervisor will they be going with?
VMware COO Carl Eschenbach jumped on the Amazon theme, saying, "I look at this audience, and I look at VMware and the brand reputation we have in the enterprise, and I find it really hard to believe that we cannot collectively beat a company that sells books
VMWare is completely lost if that is how they view their marketplace.
This posting is provided 'AS IS' without warranty of any kind, implied or otherwise.
I have seen vmware virtual center swear a machine was running that was not. I got to migrate everything onto another machine in the cluster and reboot that host. This was what support had me do as we got so far down the road and I really needed that VM back up.
Nothing is perfect. The issue is the costs are not a few hundred per host, that would be acceptable. VMware will need to reduce its cost or it will lose market share.
Yep, I know its a few thou per socket depending on edition and such. I was on about a few hundred per VMs, but yep, I know what you mean :)
http://www.writeitfor.us - Writing IT for the IT generation.
If platform and information security are requirements, there's no alternative to VMware at scale.
I'd like to see PCI/HIPAA Openstack. ;-)
"Flyin' in just a sweet place,
Never been known to fail..."
Soon all software companies will be re-inventing themselves and I won't be able to find a job developing software at any price.
Fixed that for you...
If platform and information security are requirements, there's no alternative to VMware at scale.
I'd like to see PCI/HIPAA Openstack. ;-)
Random slashdot commenter knows more about PCI than Paypal -- seriously where did you get that?
The next competition is going to be in OS less installs and thread based virtualization for servers, workstations and mobile devices. I am sure all the major plays will jump on the band wagon. As far as VMWare, I have been running my VMWare install for 4 years and have only needed to reboot it once and that was probably my fault when I had a routing loop. VMware is very stable. VirtualBox is less so but then again its a type 2 hypervisor ( I use the term hypervisor loosely so don't call me out on it) compared to ESX's type 1 hypervisor. Xen is a pain to get running. And my proxmox 2.0 install on Debian with KVM simply just works although it doesn't easily support lots of features ( at least it didn't 4 years ago when I used it). Being able to live migrate an infrastructure is very valuable. Having Purple screens of death or guest lockups or host lockups doesn't fly in the enterprise. Virtualization is rapidly becoming like a utility company, everyone expects it and no one wants to pay for it. Same will happen to all parts of the computer industry including programmers when the A.I gets good enough. There is no job that is safe in the world, everything and everyone can be replaced with something cheaper, faster or better. http://rawcell.com/
They are running a single application - or at least a series of related applications against the same data set.
That's no problem. There's no mixed-trust issue, and everything in PayPal is assumed to be under PCI DSS, down to service reps desktops.
This is an unusual case - not close to typical.
Show me your mixed-trust cloud, with multiple applications and use cases with arbitrary connectivity requirements - like most data centers.
Now, where can you insert, manage and report on controls for security and compliance? How do you assert different policy regions, so that workloads of differing trust levels may share the same pool of infrastructure resource?
On Openstack, you can't. On Hyper-V, you have the same Systems Center and agents as the physical counterpart - and no usable network isolation.
"Flyin' in just a sweet place,
Never been known to fail..."
The State of Utah UEN(Utah Education Network) recently pulled out of negotiations with VMware and sent a directive to migrate to Hyper-V.
Ouch!
We very much appreciated our free use of VMWare Server and ESXi even though they were feature/hardware-constrained. And even when they were acquired by EMC and then put out insane pricing with vSphere 5, we bought some because we needed what they offered with that at the time.
But we are a small department and we just can't afford to pay what they are asking for licenses and support. We can't expand.
So, our answer in 2012-2013 is the KVM-based ProxMox VE (proxmox.com) and we are thrilled with what we are getting for free. The gap really *has* closed a lot and I think this article makes that plain. We have some vSphere we'll run for a while, but I'd be surprised if we had any VMWare at the end of 2014.
(and EMC, now that our OpenIndiana ZFS boxes have been humming for 6 months, our Celerra will be decommissioned in April)
Big business craves stability over saving a few hundred bucks per machine. However VMware are coming up with interesting new stuff and more interestingly the more advanced features are flowing down into more basic editions.
Just my 2 cents.
As somebody who has consulted on both you're 1000% correct, more than you think, even. The real structural advantage you get out of VMware over Hyper-V is that Hyper-V is another layer of lock-in--"free" is just to reel you in. The reality is that it isn't "free"--the cost is simply built into the license they've already sold you for Windows Server, however you've bought it. I went about 50 rounds with a guy who swore up and down Hyper-V really was "free!!!" I said "Great, how do you get it?"
"Well, first you buy Windows..."
Clueless--It is incredible the marketing power of "free" and how much money it separates people from everyday. And this doesn't even include what a hyperactive piece of crap Hyper-V is to deal with if you're doing anything other than a completely vanilla implementation...
Anybody pushing Hyper-V has obviously never experienced vSphere Enterprise Plus. Me likey very much, thanks.
Who did what now?
Citrix is working on a product based on OpenStack that does just that, breaks down a datacenter or cloud into discrete chunks, down to individual server level if required to keep data segregated depending on the application.
NOT. F*ck those guys. Licensing terms, restrictions, privacy violations, internal breaches and loss of source code that they don't tell us about...sigh.
You are done.
Waterfox - a Firefox fork with legacy extension support, security updates and better privacy by default.
"On Openstack, you can't."
Or do you? Wellcome to regions.
Regions are not enforced at NIC. It is similar to tenant isolation at the port-group in VMware.
"Flyin' in just a sweet place,
Never been known to fail..."
Most non-profit companies are not behemoths. I know quite a few people working in or running small to medium-sized ones, like pet rescues, food pantries, etc. Many of these people volunteer or barely make ends meet. Granted, most of those wouldn't really need to virtualized their servers, but there are many small-to-medium sized non-profits that could use the tech, but only if it is affordable.
You're right about that. That's why I specifically said that there's no reason to worry about the "nonprofit behemoths", and even gave an example of the three most profligate wasters of our donations. I agree with you that these small-to-medium not-for-profits, particularly animal shelters, are worthy of receiving discounts or even freebies and free-assistance from linux and FOSS types. I volunteer at a local pet shelter, and they've got oodles of free labor types assisting on their web page, so they don't need me. I am all for the charities that do real work rather than the huge organizations that would rather have you donate cash instead of labor. (They can't skip their percentage off of your labor, while they can with cash).
Virtual Iron was around for a very short time and then got bought out by Oracle. I used it to setup a computer lab. It was good software, reasonably priced, and very easy to use. I think Oracle has killed it completely at this point.
"Big business craves stability over saving a few hundred bucks per machine. However VMware are coming up with interesting new stuff and more interestingly the more advanced features are flowing down into more basic editions."
Are you talking about the same big business that migrated from top stable mainframe, VMS, and Unix platforms to shit wintel to save money? The same big business that standardized on Microsoft products because they were cheaper? The same ones that hire Indian H1B1 Visa's because they can get the work done 10% cheaper, but with only 50% of the productivty?!
The same one where crticial IT decisions are made by accountants and not the I.T. staff who get bonuses based on how much money they save rather than what they invest it?
Color me cynical, but at the end of the day money talks bullshit walks. If it is cheaper they will do it. After all that is why I am paid $15/hr to make sure they stay up and running with no redundancy. After all I am a cost who adds no business value and it is cheaper to do that than pay for clustering or VMWare.
This is not the 1990s anymore.
http://saveie6.com/
Pulling information about your VMwae configurations for any sane resource management scaling is like pulling your own teeth with tweezers. The only supported way to get the data is a hunk of bloatware that only run on Windows, eates most of your local CPU, cannot gracefully open two views at the same time, and take so long to reset the console when starting up a virtual host that the BIOS and boot selection options have already blazed by. The cloning mandates randomization of your MAC address, even if you want to *keep* it for the clone, and there remain dozens of options that can only be set or managed from inside the text configuratipn files, options that the GUI *CANNOT* detect and *CANNOT* select and resets essentially randomly.
Lord, it's not good. It's not like Xen or KVM's GUI's aare a lot better, but their command line tools are more workable and at least they're actually *documented*.
Reading your gibberish, you must be a ruby on rails developer.
Amazon gets about 1 billion in revenue from their web services division. That is 1.67% of their total revenue. It's such an insignificant part of their business that they group it together in the "OTHER" category on their income statement.
So is Amazon a bookseller. Damn right they are. And in order to sell books over the internet, they have some servers (duh), which they are happy to rent out to gain an extra 1.67% increase in revenue. To sell 60 billion of goods over the internet, they have _A LOT_ of servers, and a lot of tech knowledge in-house. But don't deceive yourself. At the end of the day, they are a RETAILER.. which is where 98.33% of their business is.
Hyper-V sucks. If it didn't Windows Azure would be much better and more reliable than it currently is.
I have seen a Hyper V guest mentally shit itself and cause the host to fail in such a manner that the failed machines didn't restart. So rather than have a restart on another cluster member a guest was able to take out a host. Just wouldn't happen with VMware and it's highly advanced Virtual Machine Manager. VMware also has awesome other features including shared memory paging etc etc.
A few weekends back we had a small 2 server cluster have both nodes fail simultaneously (both failed to post until we removed their network cards). Dell was able to supply one replacement part within 8 hours which got one machine going, but vSphere didn't just automatically restart the servers that are homed on the failed node on the good node (there is plenty of resources to do so). To fix it I would have to delete the failed node from the cluster and manually add the machines. That's not HA by any stretch of the imagination. In the end it was easier to just wait the additional 8 hours for Dell to locate and ship another replacement part (we aren't exactly in the metro area so Dell's time to repair was (i think) within the agreed SLA) to get the other node up again. We've used similar Hyper-V clusters and they "just work". As a general rule though, I'd agree that Hyper-V is more prone to troublesome antics than... well anything else really.
Big business craves stability over saving a few hundred bucks per machine. However VMware are coming up with interesting new stuff and more interestingly the more advanced features are flowing down into more basic editions.
Just my 2 cents.
As somebody who has consulted on both you're 1000% correct, more than you think, even. The real structural advantage you get out of VMware over Hyper-V is that Hyper-V is another layer of lock-in--"free" is just to reel you in. The reality is that it isn't "free"--the cost is simply built into the license they've already sold you for Windows Server, however you've bought it. I went about 50 rounds with a guy who swore up and down Hyper-V really was "free!!!" I said "Great, how do you get it?"
"Well, first you buy Windows..."
Clueless--It is incredible the marketing power of "free" and how much money it separates people from everyday. And this doesn't even include what a hyperactive piece of crap Hyper-V is to deal with if you're doing anything other than a completely vanilla implementation...
Anybody pushing Hyper-V has obviously never experienced vSphere Enterprise Plus. Me likey very much, thanks.
FUD much? Windows Hyper-V Server is free, as in the dollar cost to you is zero. If you want to run Windows on top of it then obviously you have to pay for that, but we're not arguing about that. You could just as easily run Linux on top of it and never pay a cent to Microsoft (although there is no good reason to do so - you'd use Xen instead).
:)
The guy you were talking to was obviously clueless in thinking you have to buy Windows first, but he was right about Hyper-V itself being free.
Give me Hyper-V over VMWare any day, but then throw them both out and give me Xen
Reading problems much? You have not addressed parent's main objection: In order to run any guest under HyperV, you still have to have a host machine running HyperV. Guess how you get that? That's right, by buying Windows.
The last few marketing campaigns have shown how dreadfully bad MS is at marketing and PR; apparently they've been cutting back on their astroturf quality as well, if you are an example.
"I know I will be modded down for this": where's the option '-1, Asking for it'?
Yeah, I'm sure the president of the Red Cross isn't doing anything to earn that money and doesn't have to deal with circumstances that cause the job to actually pay more that you think it would with you all knowing understanding.
It's not like they're a public figure who has a microscope on them and if they have some sort of accident or regular person mishap will have to read the next day the "President of Red Cross is scum for common mishap". I'm sure being perfect is no problem.
I'm sure they don't have any special skills - organizationally, managerial, or otherwise.
I bet that pres has absolutely NO fund raising prowess that make it worth paying them big money so they can raise 10 times that just because of their connections.
How much money someone makes is almost always a reflection of their perceived value to their organization. If the president in question brings more value to the table then he gets paid then its a good deal. And for all you know they left a much higher paying job and took a pay cut to work at the Red Cross... but who cares right... they've got no shame, right.
The tech works 100 percent of the time when it is properly applied to a person who sincerely desires to improve his life.
Open source simply leads to boxed commodity software becoming free... Most software developers, even today, are developing bespoke applications for their employers and this would only increase with open source as companies gain the ability to actually modify the software they're using rather than just having to put up with it as-is.
http://spamdecoy.net - free throwaway anonymous email - avoid spam!
Read again. Hyper-V Server is 100% free - you do not have to buy Windows to get it, you download the ISO from the Microsoft site, and install it. It's fully functional (HA,live migration, live storage migration etc etc). If you wanted to run a whole bunch of Linux VM's on it then you could do that without paying microsoft a cent.
http://www.microsoft.com/en-us/server-cloud/hyper-v-server/default.aspx
The nice thing about things like OpenStack is the fact that you can exert as much control over the underlying hypervisor/host functionality as you want. With such facilities, I can give you better isolation and security than VMware can provide right now, and I say this as a senior engineer who deals with VMware on a daily basis. It appears you're once again speaking without properly researching things first.
Write failed: Broken pipe
Reading problems much? You have not addressed parent's main objection: In order to run any guest under HyperV, you still have to have a host machine running HyperV. Guess how you get that? That's right, by buying Windows.
The last few marketing campaigns have shown how dreadfully bad MS is at marketing and PR; apparently they've been cutting back on their astroturf quality as well, if you are an example.
WTF? You really don't have to buy windows to get Hyper-V. "Windows Hyper-V Server" is a separate product, and is free. It includes Windows Server Core (eg no real GUI), and is designed to be managed by a (non-free) version of windows running somewhere else, but that isn't a requirement.
It's a marketing strategy by Microsoft - the intention is that you would then buy Microsoft OS's to run on top of your free Hyper-V server, so the fact that it really is free is really not of any consequence, but it is still free and I can read just fine.
And yes I'd make a very poor quality MS astroturfer when I'm saying to use Xen in preference to Hyper-V or VMWare... but I guess you missed that part.
Windows Hyper-V Server is free, as in the dollar cost to you is zero. If you want to run Windows on top of it then obviously you have to pay for that
Oh, you mean Hyper-V Server, the bare-metal hypervisor, not the installable add-on? Then yes, it is free as in license cost--but its other main "Feature" is that its also shite. Its a classic example of "Getting what you pay for." In this case, what you're not paying for is a VMM that prevents a guest from crashing the host. So good luck with that.
But even if the price tag is "free" for their bare metal hypervisor--so what? What MS really fears from VMware isn't their hypervisor, its the seed of the idea they plant in their customers heads--that is: "Yes, Mr. SMB Network/Systems Admin, you really can have a stable, powerful, and easy to use unix/linux based commercial software system in your data center that is transparent to your users that your existing admins can understand." So there's still lock-in, but in this case, the lock-in is a mental lock-in to a mindset.
And, sure, you could run Linux on Hyper-V Hypervisor... You could also take a spork and shove it in your eye to prevent glaucoma--it works, but its a sub-optimal solution. I might even argue that the spoon in the eye is less painful than coping with Hyper-V Hypervisor all day.
Who did what now?
And for all you know they left a much higher paying job and took a pay cut to work at the Red Cross... but who cares right... they've got no shame, right.
That's right. If it's about the money, they can fuck right off -- the red cross needs someone in charge for whom it is not about money. If it's not about money, why do they need $1M/year? (If it weren't about money, they'd price first aid kits within reason, so that people would actually buy them.)
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
Slightly off topic but I wanted to take a chance to plug Proxmox VE. It's done beautifully for me, I run 16 guests on a server for some web projects (a bunch of them run sharepoint). It's very nice and open source. It supports KVM and OpenVZ and has a healthy community for it.
:)
Check it out
At $15/hour you'll be a hundredaire in to time. I'm sure the guys you work are are getting exactly what they are paying for, either because you are not putting out full effort, or you are not capable of better effort.
Cheap storage VM.
Hyper-V server 2012 is indeed free. You can download it from Microsoft. It even includes the ability to do clusters. No windows license required.
The catch is that you have to manage it through command line tools, or have a Windows 8 PC handy to run the management tools on.
What's the deal with the mod down? "Redundant"??? there were like 12 comments when i posted, NONE of which pointed out the free hypervisor.
Those who can, do.
Yeah, but the thing about Microsoft's solution is, you're never *really* sure how free "free" will wind up being?
Time after time after time, I've worked for companies who bought into a Microsoft technology (often because it offered a lot of bang for the buck, up-front), and we wound up getting locked into a costly upgrade path down the road, or were essentially herded by Microsoft to take the I.T. infrastructure whatever direction THEY wanted it to go, if we expected to keep using the technology you started with.
That's why where I work now, we decided on VMWare for our server virtualization needs. Up front, yes ... it cost more than doing the same thing with Hyper-V. In fact, the consulting firm we occasionally work with recommended against it and fought us to reconsider. But as my boss and I both reasoned - VMWare is pretty much the initial player in the VM game. They've been offering enterprise grade solutions for this before Microsoft ever thought about coding such a thing. And when you look at all the juggling MS has done in recent years with the way their licensing works (largely to address deficiencies in how virtual machines would be legally licensed), you can tell they were scrambling to play catch-up. I'm sure Hyper-V is a perfectly good, solid product. (We used it on severs at my previous employer and it was completely reliable for them.) We're more worried about the antics MS might play, later on. With the VM tied into the OS itself, it gives Microsoft plenty of leverage to, for example, say "Oh... Windows Server 2014 is NOW going to require you pay a $50,000 per server fee for a "VM extensibility pack" add-on license, or else you're not in compliance!" If they did, what would you do as a business who was invested heavily in their server products?
Since VMWare doesn't make operating systems, they're always going to be forced to offer the best possible VM option they can make. They can't just make you accept whatever they give you, because it was bundled with the latest OS upgrade your company needed to do.
All machines should have firewalls. All of them, virtualized or not.
Defense in depth is easier than mopping up the blood after something gets past a brittle outer shell and into the soft guts of unprotected internal hosts.
Distributed switching?
Can a sufficiently privileged user of the Guest OS change their networking characteristics? Add an IF or change a MAC?
If they are firewalled, can they change fw state and rules?
"Flyin' in just a sweet place,
Never been known to fail..."
I know this is a hell of a noob question for Slashdot, but maybe someone will inform me anyway. Why do people like PayPal even need to use VMs? Can't they just write software that is designed to work over a cluster of real machines that act as failovers? What advantages does using a VMs get you when you don't need to support software written for multiple OSes (I'm assuming PayPal's main reason for using VMs is not that)?
== Jez ==
Do you miss Firefox? Try Pale Moon.
Yeah, you make a really bad astroturfer; a stupid one. Really? "You don't need Windows for HyperV, just for the management station"? You think I was born yesterday?
And spare us the "but I use Xen" gambit. You're on Slashdot, where the Microsoft FUD used to be served up with, "I like Linux, I even run Slackware, but..." since 1998 or so. Given your UID, that might even have been you.
Mart
"I know I will be modded down for this": where's the option '-1, Asking for it'?
You're trolling?
For as much as the Red Cross does, a salary of $1 million is cheap. The president of the Red Cross is easily worth 10x that.
Lesson one, folks: always follow the link from a right-wing nutjob or a Microsoft fanboi.
There is nothing there that proves what you say, just a bunch of marketing fluff. The other guy in the thread has told us why: even if the core product is a free download, you still need a Windows management station.
"I know I will be modded down for this": where's the option '-1, Asking for it'?
Your claim was: " In order to run any guest under HyperV, you still have to have a host machine running HyperV. Guess how you get that? That's right, by buying Windows."
That has been demonstrated by me & the other poster to be 100% false. To get a host machine running Hyper-V, you don't have to buy Windows - you can download the 100% free Hyper-V server. Saying that because you need to have an admin workstation is moving the goalposts. It is correct to say that you will need to have a Windows management station (Windows 8 will do) but your claim was that to run a Hyper-V host you need to buy Windows, and your claim is wrong.
And how you manage your 100% free Hyper-V Server farm? Hyper-V Management instrumentation needs Windows MMC... SCVMM also expensive... dont tell me "Powershell" because we're talking about ease of use, something that is valuable for most IT guys that have a life. vSphere vCenter Server is available as a Linux appliance and you no longer need an Windows machine to run the client... you can manage everything on vSphere WebClient from any OS... any browser... Now what?
"I am paid $15/hr to make sure they stay up and running with no redundancy"
Ummm... What? $15/hr? You missed a zero before the slash, right?
Interviewing now for bigger and brighter things.
Point being is the accountants are clueless and cost is all that matters at the end of the day.
http://saveie6.com/
Late reply, but I'm guessing that if you're considering a Hyper-V solution, you're probably in the Windows ecosystem and will likely have a Windows administrative workstation somewhere...
You can manage Hyper-V using the MMC tools from a remote workstation, you don't necessarily need VMM, although at a certain scale it becomes desirable - at which point you incur cost. Although you could use another wrapper over the top - like OpenStack for instance.
The host running HyperV is worthless without a management station. I'm not moving the goalposts, you and Microsoft are playing a bait-and-switch.
"I know I will be modded down for this": where's the option '-1, Asking for it'?
Most of the comments are missing the key focus: Cloud Orchestration.
Nothing of that is about Hypervisor level. Sorry but your lost your time typing BS like "A, B and C do that fo free", because its out of focus here.
First things first: "Openstack is not a product, it's a community working in a modular solution based on VM, storage and network orchestration" - Diego Parrilla
Same thing for "VMware"... you dont "replace VMware and put Openstack" on your hardware, because this is a HUGE missunderstanding of the fundametals. The way the news were wrote sounds like PayPal is ripping of ESXi, vCenter, vOM, etc from their datacenters, but its NOT. Openstack works with a broad range of hypervisors and ESX is just one of them. What PayPal os probably doing is replace VMware vCloud Manager for a very customized solution based on Openstack modules.
ESXi is still the "most Type-1" hypervisor available out there. All other competitor are much more Type-2 than VMware's hypervisor design. And ESX is a DAMN GOOD hypervisor. Anyone that knows a little bit about differences and constraints for using paravirtualization and emulation knows what I'm talking about (just research about consolidation ratios/performance payloads). And since ESXi is still present on PayPal infrastructure they will still pay for Enterprise features on it.
Dont make me wrong: Openstack is a HOT thing and deserves respect... dumb IT people dont.
Someone wrote "Hyper-V Server is 100% free"... come one man: it's not - you still need MMC or SCVMM to manage it! vSphere dont need Windows to be managed (vSphere WebClient on vCenter Server Virtual Appliance). Even Citrix or M$ doesn't offer something similar em functionality!