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Under light to medium load you can run OS X Server in 4Gb of RAM quite easily so your 64Gb would translate to about 14 copies, given that you will want 4Gb for the base level OS and 4Gb for Fusion.

Are you aware of AquaConnect (http://www.aquaconnect.net/) which offers Macintosh virtual terminal services? Is that what you need?

Where do I start?

I’m a huge financial nerd, and have spent an embarrassing amount of time talking to people about their money habits.

Here are the biggest mistakes people are making and how to fix them:

Not having a separate high interest savings account

Having a separate account allows you to see the results of all your hard work and keep your money separate so you're less tempted to spend it.

Plus with rates above 5.00%, the interest you can earn compared to most banks really adds up.

Here is a list of the top savings accounts available today. Deposit $5 before moving on because this is one of th

Where do I start?

I’m a huge financial nerd, and have spent an embarrassing amount of time talking to people about their money habits.

Here are the biggest mistakes people are making and how to fix them:

Not having a separate high interest savings account

Having a separate account allows you to see the results of all your hard work and keep your money separate so you're less tempted to spend it.

Plus with rates above 5.00%, the interest you can earn compared to most banks really adds up.

Here is a list of the top savings accounts available today. Deposit $5 before moving on because this is one of the biggest mistakes and easiest ones to fix.

Overpaying on car insurance

You’ve heard it a million times before, but the average American family still overspends by $417/year on car insurance.

If you’ve been with the same insurer for years, chances are you are one of them.

Pull up Coverage.com, a free site that will compare prices for you, answer the questions on the page, and it will show you how much you could be saving.

That’s it. You’ll likely be saving a bunch of money. Here’s a link to give it a try.

Consistently being in debt

If you’ve got $10K+ in debt (credit cards…medical bills…anything really) you could use a debt relief program and potentially reduce by over 20%.

Here’s how to see if you qualify:

Head over to this Debt Relief comparison website here, then simply answer the questions to see if you qualify.

It’s as simple as that. You’ll likely end up paying less than you owed before and you could be debt free in as little as 2 years.

Missing out on free money to invest

It’s no secret that millionaires love investing, but for the rest of us, it can seem out of reach.

Times have changed. There are a number of investing platforms that will give you a bonus to open an account and get started. All you have to do is open the account and invest at least $25, and you could get up to $1000 in bonus.

Pretty sweet deal right? Here is a link to some of the best options.

Having bad credit

A low credit score can come back to bite you in so many ways in the future.

From that next rental application to getting approved for any type of loan or credit card, if you have a bad history with credit, the good news is you can fix it.

Head over to BankRate.com and answer a few questions to see if you qualify. It only takes a few minutes and could save you from a major upset down the line.

How to get started

Hope this helps! Here are the links to get started:

Have a separate savings account
Stop overpaying for car insurance
Finally get out of debt
Start investing with a free bonus
Fix your credit

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As many as your computer's hardware can handle. There's no hard limit to how many VMs can run. Each one uses resources though and eventually they will start to stall and slow down. The bad thing is unless you prioritize resources it will start to impact all of them. Find out how much each VM needs to run and then y...

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There is no set answer, it depends on many factors.

For example, a way (way way) back, VMware had support for 64 active VMs but if those VMs were configured for Windows the actual limit was 27 (it would fail to create number 28).

VMWare 4 had a limit of a 1GB total ram for the VMs, VMWare 5 raised it to 4GB while VMWare 6 eliminated the maximum.

Similarly, 64, 128 and 512 (latest I remember seeing) were documented limits for different versions of VMWare but very often these were only theoretical and many factors influenced the actual number that could successfully used.

Then there are quality of s

There is no set answer, it depends on many factors.

For example, a way (way way) back, VMware had support for 64 active VMs but if those VMs were configured for Windows the actual limit was 27 (it would fail to create number 28).

VMWare 4 had a limit of a 1GB total ram for the VMs, VMWare 5 raised it to 4GB while VMWare 6 eliminated the maximum.

Similarly, 64, 128 and 512 (latest I remember seeing) were documented limits for different versions of VMWare but very often these were only theoretical and many factors influenced the actual number that could successfully used.

Then there are quality of service factors. It’s may be possible to get a set number to technically run, but if they are too slow to be usable, then it’s essentially a theoretical number anyway.

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Other answers here may further clarify it for you. I have managed to do it with

  • Catalina 10.14
  • Monterey 12.4

Unfortunately, it’s hard to give any details about it without violating a few of Quora´s policies.

Best wishes.

Other answers here may further clarify it for you. I have managed to do it with

  • Catalina 10.14
  • Monterey 12.4

Unfortunately, it’s hard to give any details about it without violating a few of Quora´s policies.

Best wishes.

Are you on the right path to retirement? Investors with $1 million+, download this guide.
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Not "as-is". MacOS still checks for the underlying hardware, even if running in a VM. There are hacks to make it work, but those are the same hacks you'd apply to a bare metal installation of macOS on non-Apple hardware and have the same numerous drawbacks. You still don't dare install software updates until you've verified they don't undo your hack, still don't dare run Apple connected apps like iCloud or the App Store in case they report your hardware back to Apple, still have certain app incompatibilities because you don't have hardware they're expecting, still can't submit any macOS or iOS

Not "as-is". MacOS still checks for the underlying hardware, even if running in a VM. There are hacks to make it work, but those are the same hacks you'd apply to a bare metal installation of macOS on non-Apple hardware and have the same numerous drawbacks. You still don't dare install software updates until you've verified they don't undo your hack, still don't dare run Apple connected apps like iCloud or the App Store in case they report your hardware back to Apple, still have certain app incompatibilities because you don't have hardware they're expecting, still can't submit any macOS or iOS apps you build to the App Store because it will have info about your hardware in it.

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UPDATE: March 11, 2020

I mentioned the Xeon CPUs in two hosts below. This became a BIG problem later in the year.

It turns out that Workstation 12 is the last version to support those older CPUs.

I had already discovered that on the one system that I tried to upgrade to Workstation 14 and rolled back to version 12.

Then (apparent) disaster struck. After the Windows 10 1909 update, Windows 10 said it would no longer run the older VMware Workstation on either Xeon system. A message popped up saying the program was unsupported and to get a newer version.

BUT… the newer versions did not support the Xeo

UPDATE: March 11, 2020

I mentioned the Xeon CPUs in two hosts below. This became a BIG problem later in the year.

It turns out that Workstation 12 is the last version to support those older CPUs.

I had already discovered that on the one system that I tried to upgrade to Workstation 14 and rolled back to version 12.

Then (apparent) disaster struck. After the Windows 10 1909 update, Windows 10 said it would no longer run the older VMware Workstation on either Xeon system. A message popped up saying the program was unsupported and to get a newer version.

BUT… the newer versions did not support the Xeon CPUs. Uh oh.

As the Dell T310 was host to multiple key VMs, I had a big problem.

I converted each of the 5 critical VMs to run on Oracle Virtual Box (after first confirming that it would run and support the Xeon CPUs). I had to use a third VMware system with a newer CPU to make those conversions using Workstation 15. With the time to copy multiple Gigabytes of virtual machine files, first to that system and then back, it was four days before everything was up and running again on the Dell T310.

That system is still on Virtual Box and actually running 6 VMs now.

THEN… I found there was a registry patch to prevent Windows 10 1909 from complaining about the older versions of VMware. I applied that to the second, less critical, Xeon CPU system and was able to continue running VMware Workstation 12 on it.

Had I know about that earlier, I could have saved myself four days of painful work to move systems to Virtual Box.

I am more than a little upset with VMware at this point. I can understand dropping support for “older” CPUs but it doesn’t make sense to do that for “server” CPUs still in wide use. It is also reprehensible that they didn’t have the registry patch available right away.

Microsoft didn’t cover themselves in glory here either with a cryptic message that you need a newer version.

I guess when you are a 28-year-old programmer in India you think that a 10-year-old system is so ancient as to be unthinkable to support. That’s probably also true of your 35-year-old manager. Sigh…

I deeply distrust Oracle thus Virtual Box but I’m not about to covert everything back to VMware again either.

ORIGINAL ANSWER: July 2019

This is very much a function of how much RAM you have in your host system and how much RAM you assign to each VM.

It’s also affected by the amount of disk space in the host but that is usually not the governing factor.

The CPU probably matters the least as long as it’s new enough to support Intel VT or AMD V. It also cannot be too old as of VMware Workstation 14 - see below*.

I normally assign just one virtual CPU core to each VM having been advised by VMware support that best practice is to let the host use the multiple cores directly. Only in some circumstances do you want multi-core VMs.

My “busiest” VMware Workstation host is a Dell T310 “server” but running Windows 10 Pro and VMware Workstation 11.1.4**.

It has 16 GB of ECC RAM, a 2 TB SSD boot disk and three more 2 TB HDD. There are two Ethernet interfaces - one to the public Internet and the other in my LAN.

There are five VMs normally active:

  1. CentOS 7 with 4 GB vRAM - mail and DNS server
  2. Windows Server 2000 with 384 MB vRAM - ancient webserver (behind two layers of NAT)
  3. CentOS 6.9 with 1 GB vRAM - Bugzilla server
  4. CentOS 6.9 with 2 GB vRAM - file transfer product testing and FTP download
  5. CentOS 5.11 with 512 MB vRAM - a backup copy of our (mostly no longer used) subversion server

** As the CPU in the Dell T310 host is a Xeon X3430, I’m not sure what is the newest version of VMware that I can use.

* I have another Xeon W3530 system that would not let me run Workstation 14 or 15 so I had to reinstall Workstation 12 on it. It is running two VMs normally but has run up to six at once. There is 24 GB of ECC RAM on that system.

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Here’s the thing: I wish I had known these money secrets sooner. They’ve helped so many people save hundreds, secure their family’s future, and grow their bank accounts—myself included.

And honestly? Putting them to use was way easier than I expected. I bet you can knock out at least three or four of these right now—yes, even from your phone.

Don’t wait like I did. Go ahead and start using these money secrets today!

1. Cancel Your Car Insurance

You might not even realize it, but your car insurance company is probably overcharging you. In fact, they’re kind of counting on you not noticing. Luckily,

Here’s the thing: I wish I had known these money secrets sooner. They’ve helped so many people save hundreds, secure their family’s future, and grow their bank accounts—myself included.

And honestly? Putting them to use was way easier than I expected. I bet you can knock out at least three or four of these right now—yes, even from your phone.

Don’t wait like I did. Go ahead and start using these money secrets today!

1. Cancel Your Car Insurance

You might not even realize it, but your car insurance company is probably overcharging you. In fact, they’re kind of counting on you not noticing. Luckily, this problem is easy to fix.

Don’t waste your time browsing insurance sites for a better deal. A company called Insurify shows you all your options at once — people who do this save up to $996 per year.

If you tell them a bit about yourself and your vehicle, they’ll send you personalized quotes so you can compare them and find the best one for you.

Tired of overpaying for car insurance? It takes just five minutes to compare your options with Insurify and see how much you could save on car insurance.

2. Ask This Company to Get a Big Chunk of Your Debt Forgiven

A company called National Debt Relief could convince your lenders to simply get rid of a big chunk of what you owe. No bankruptcy, no loans — you don’t even need to have good credit.

If you owe at least $10,000 in unsecured debt (credit card debt, personal loans, medical bills, etc.), National Debt Relief’s experts will build you a monthly payment plan. As your payments add up, they negotiate with your creditors to reduce the amount you owe. You then pay off the rest in a lump sum.

On average, you could become debt-free within 24 to 48 months. It takes less than a minute to sign up and see how much debt you could get rid of.

3. You Can Become a Real Estate Investor for as Little as $10

Take a look at some of the world’s wealthiest people. What do they have in common? Many invest in large private real estate deals. And here’s the thing: There’s no reason you can’t, too — for as little as $10.

An investment called the Fundrise Flagship Fund lets you get started in the world of real estate by giving you access to a low-cost, diversified portfolio of private real estate. The best part? You don’t have to be the landlord. The Flagship Fund does all the heavy lifting.

With an initial investment as low as $10, your money will be invested in the Fund, which already owns more than $1 billion worth of real estate around the country, from apartment complexes to the thriving housing rental market to larger last-mile e-commerce logistics centers.

Want to invest more? Many investors choose to invest $1,000 or more. This is a Fund that can fit any type of investor’s needs. Once invested, you can track your performance from your phone and watch as properties are acquired, improved, and operated. As properties generate cash flow, you could earn money through quarterly dividend payments. And over time, you could earn money off the potential appreciation of the properties.

So if you want to get started in the world of real-estate investing, it takes just a few minutes to sign up and create an account with the Fundrise Flagship Fund.

This is a paid advertisement. Carefully consider the investment objectives, risks, charges and expenses of the Fundrise Real Estate Fund before investing. This and other information can be found in the Fund’s prospectus. Read them carefully before investing.

4. Earn Up to $50 this Month By Answering Survey Questions About the News — It’s Anonymous

The news is a heated subject these days. It’s hard not to have an opinion on it.

Good news: A website called YouGov will pay you up to $50 or more this month just to answer survey questions about politics, the economy, and other hot news topics.

Plus, it’s totally anonymous, so no one will judge you for that hot take.

When you take a quick survey (some are less than three minutes), you’ll earn points you can exchange for up to $50 in cash or gift cards to places like Walmart and Amazon. Plus, Penny Hoarder readers will get an extra 500 points for registering and another 1,000 points after completing their first survey.

It takes just a few minutes to sign up and take your first survey, and you’ll receive your points immediately.

5. Get Up to $300 Just for Setting Up Direct Deposit With This Account

If you bank at a traditional brick-and-mortar bank, your money probably isn’t growing much (c’mon, 0.40% is basically nothing).

But there’s good news: With SoFi Checking and Savings (member FDIC), you stand to gain up to a hefty 3.80% APY on savings when you set up a direct deposit or have $5,000 or more in Qualifying Deposits and 0.50% APY on checking balances — savings APY is 10 times more than the national average.

Right now, a direct deposit of at least $1K not only sets you up for higher returns but also brings you closer to earning up to a $300 welcome bonus (terms apply).

You can easily deposit checks via your phone’s camera, transfer funds, and get customer service via chat or phone call. There are no account fees, no monthly fees and no overdraft fees. And your money is FDIC insured (up to $3M of additional FDIC insurance through the SoFi Insured Deposit Program).

It’s quick and easy to open an account with SoFi Checking and Savings (member FDIC) and watch your money grow faster than ever.

Read Disclaimer

5. Stop Paying Your Credit Card Company

If you have credit card debt, you know. The anxiety, the interest rates, the fear you’re never going to escape… but a website called AmONE wants to help.

If you owe your credit card companies $100,000 or less, AmONE will match you with a low-interest loan you can use to pay off every single one of your balances.

The benefit? You’ll be left with one bill to pay each month. And because personal loans have lower interest rates (AmONE rates start at 6.40% APR), you’ll get out of debt that much faster.

It takes less than a minute and just 10 questions to see what loans you qualify for.

6. Lock In Affordable Term Life Insurance in Minutes.

Let’s be honest—life insurance probably isn’t on your list of fun things to research. But locking in a policy now could mean huge peace of mind for your family down the road. And getting covered is actually a lot easier than you might think.

With Best Money’s term life insurance marketplace, you can compare top-rated policies in minutes and find coverage that works for you. No long phone calls. No confusing paperwork. Just straightforward quotes, starting at just $7 a month, from trusted providers so you can make an informed decision.

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You already protect your car, your home, even your phone. Why not make sure your family’s financial future is covered, too? Compare term life insurance rates with Best Money today and find a policy that fits.

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Q: What is the difference between Mac OS X and macOS Server? Which is better to use on servers, Mac OS X or macOS Server?

A: They are the same Apple operating system

  • They are both Apple macOS (Apple Mac OS X was renamed to Apple macOS by Apple many years ago)
  • Apple macOS Server is actually an app
  • Apple sells Apple macOS operating system with or without the macOS Server app, the operating system is the same, the app simply gives the user a convenient way to access the UNIX server functionality that is built into all Apple macOS operating systems
  • So in fact the Mac user can activate and run the built

Q: What is the difference between Mac OS X and macOS Server? Which is better to use on servers, Mac OS X or macOS Server?

A: They are the same Apple operating system

  • They are both Apple macOS (Apple Mac OS X was renamed to Apple macOS by Apple many years ago)
  • Apple macOS Server is actually an app
  • Apple sells Apple macOS operating system with or without the macOS Server app, the operating system is the same, the app simply gives the user a convenient way to access the UNIX server functionality that is built into all Apple macOS operating systems
  • So in fact the Mac user can activate and run the built in UNIX server functions without using the Apple macOS Server app
  • The user can manage his Mac server manually (the old fashioned way, via the built-in UNIX command line that all Macs have) or they can use any other UNIX server management app that they choose because Apple macOS is a certified UNIX (so all UNIX and Linux apps run natively on Apple macOS)
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You should be able to run a dozen with ease, unless you are doing something ultra-complex like rendering video in each one of them.

I have 32gb and I run 3 Windows 10 at a time.

I have an M1 MacBook Air and I can run 3 Windows 11 at a time with ease.

You shouldn’t have any issues.

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AI effectiveness depends on relevant, responsible and robust data to prevent costly errors, inefficiencies, and compliance issues. A solid data foundation allows AI models to deliver precise insights and ensures systems comply with regulations and protect brand reputation.​

Gartner® finds that "At least 30% of generative AI (GenAI) projects will be abandoned after proof of concept by the end of 2025, due to poor data quality, inadequate risk controls, escalating costs, or unclear business value." High-quality, AI-ready data is the fuel for AI-driven advancements now and in the future.

Get your d

AI effectiveness depends on relevant, responsible and robust data to prevent costly errors, inefficiencies, and compliance issues. A solid data foundation allows AI models to deliver precise insights and ensures systems comply with regulations and protect brand reputation.​

Gartner® finds that "At least 30% of generative AI (GenAI) projects will be abandoned after proof of concept by the end of 2025, due to poor data quality, inadequate risk controls, escalating costs, or unclear business value." High-quality, AI-ready data is the fuel for AI-driven advancements now and in the future.

Get your data AI-ready.

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You tagged Yosemite and Classic Mac OS: While I haven’t heard any recent news on later revisions of the current code (despite having written about and used Macs since before there was an Internet), I am quite confident in saying that Classic OS has no inherent provisions for a role as an Hypervisor. I’m pretty sure there are a few bits in Yosemite, because I was told by Serge Robe, VMWare’s project manager for VMWare Fusion, that they requested some little bits of code and libraries to be included some time before Yosemite was released. However: these are definitely not about a standalone hype

You tagged Yosemite and Classic Mac OS: While I haven’t heard any recent news on later revisions of the current code (despite having written about and used Macs since before there was an Internet), I am quite confident in saying that Classic OS has no inherent provisions for a role as an Hypervisor. I’m pretty sure there are a few bits in Yosemite, because I was told by Serge Robe, VMWare’s project manager for VMWare Fusion, that they requested some little bits of code and libraries to be included some time before Yosemite was released. However: these are definitely not about a standalone hypervisor capability. They are there to support requests from the various third party hypervisors, like VirtualBox, VMWare Fusion, Parallels, and any others I might have missed…

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There are a number:

  1. Make certain DNS is correct. macOS Server is much, much happier with with a proper, fully qualified domain name. This means that you should be able to type in yourservername.domain.com and find it on the network. This also means that, if your network is small, the server should act as the primary DNS server for the network and forward requests it doesn’t understand. In the past, this could involve some pain, but now server.app does a pretty good job of just setting it up to work. As you go through setup, pick the option to have your machine be accessible from the internet, a

There are a number:

  1. Make certain DNS is correct. macOS Server is much, much happier with with a proper, fully qualified domain name. This means that you should be able to type in yourservername.domain.com and find it on the network. This also means that, if your network is small, the server should act as the primary DNS server for the network and forward requests it doesn’t understand. In the past, this could involve some pain, but now server.app does a pretty good job of just setting it up to work. As you go through setup, pick the option to have your machine be accessible from the internet, and you should be set to go. You can check and see if you’re okay on the device by typing in ‘sudo changeip -checkhostname’ in the terminal and it should come back with a success message. On a client machine, type in ‘nslookup yourservername.domain.com’ and it should come back with the server IP address.
  2. Have Time Machine configured and cloned backups via Carbon Copy Cloner or similar if you will have anything important at all on this. Server loves to up and die, and restoring from a backup is often your fastest option.
  3. What is the purpose? In this day and age, it’s pretty much only useful for Profile Manager and Open Directory. If you intend to use profile manager, make sure you have a code signing certificate and SSL certificate in place - these can be self signed, but then you’ll need to make sure you install a trust profile from Profile Manager on each client in order for the device to actually behave.
  4. 90% of all issues I’ve seen on macOS Server these days have boiled down to DNS and certificate issues.

The real question though, is why are you planning to use this? I’ve been a big fan of Apple’s server offering, but in truth, most of the features have been nerfed. Profile Manager is probably not your best best for MDM, so that leaves open directory and…. you may not want to do that either.

That’s not to say it’s useless - we still maintain and deploy it in some situations - but you do want to take a good long hard look at what the needs are.

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MacOS X Server was a variant of MacOS X that included a number of extra applications to make it more useful … as a server. Mostly these were nice GUI’s over services that were always there, and mainly are still there, but are much more complicated to use without the GUI’s. (Many are open-source services that are widely used in Unix and Linux servers.) The appropriate OS came free with every Apple server, desktop, and laptop. At the time, MaxOS X upgrades cost around $15. Apple charged much more for the Server upgrades somewhere around $200 as I recall. If you wanted, you could buy MacOS X Serv

MacOS X Server was a variant of MacOS X that included a number of extra applications to make it more useful … as a server. Mostly these were nice GUI’s over services that were always there, and mainly are still there, but are much more complicated to use without the GUI’s. (Many are open-source services that are widely used in Unix and Linux servers.) The appropriate OS came free with every Apple server, desktop, and laptop. At the time, MaxOS X upgrades cost around $15. Apple charged much more for the Server upgrades somewhere around $200 as I recall. If you wanted, you could buy MacOS X Server and install it on any Mac you liked.)

Apple decided to get out of the server business, dropping the hardware made for that purpose. They eventually dropped the MacOS X Server software as well. This is quite some time back - I’m sure you can find the timeline out on the web somewhere. Some of the additional GUI’s were either moved into straight MacOS X, or merged into existing programs on MacOS X - often in simplified forms. Others were just dropped. The back-end programs that were behind the GUI’s mainly stayed, though often more recent versions are available from various open-source repositories.

macOS is the fairly recent rebranding of MacOS X. macOS Server never existed - the macOS name wasn't introduced until years after MaxOS X server had faded into history.

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I have done exactly that in order to have two different versions of OSX available.

Using VMware Fusion with (1) hardware support for virtualization enabled, (2) a solid state drive (SSD) and (3) enough RAM, the performance of the VM is almost indistinguishable from the host system.

I have also run Linux and Windows in VMs on this same system with perfectly acceptable performance.

In particular, building our software product on the VM with Linux (CentOS 6 at that time) was acceptably fast.

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OS X Server is a server operating system designed specifically to be installed and used on Apple-based server machines.

It is an Apple proprietary server OS. Apple has released several versions of the OS X server, including Cheetah Server (version 10.0), Puma Server (version 10.1) and Mavericks Server (version 10.9, released Oct 2013). OS X Server was initially released in 1999

OS X Server's user interface is similar to the desktop version of OS X. It has support for popular open-source technologies such as UNIX, Java, Carbon and other development and database technologies. OS X server incorpora

OS X Server is a server operating system designed specifically to be installed and used on Apple-based server machines.

It is an Apple proprietary server OS. Apple has released several versions of the OS X server, including Cheetah Server (version 10.0), Puma Server (version 10.1) and Mavericks Server (version 10.9, released Oct 2013). OS X Server was initially released in 1999

OS X Server's user interface is similar to the desktop version of OS X. It has support for popular open-source technologies such as UNIX, Java, Carbon and other development and database technologies. OS X server incorporates the OS kernel and features from UNIX OS.

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It depends on the load of the virtual machines. Most will saturate your memory long before they saturate CPU.

Under Hyper-V on my current desktop I have a replica of several family members computers plus our NAS circa 2012 system images. I ran all of them overspecced on hardware to what they had then (all of them running 4GB RAM, and doubled core counts).

During the restore process all of them occasionally spiked the full load for either RAM or CPU. When all of them were done restoring and validating the entire usage was 512MB RAM per VM (Hyper-V allows dynamic allocation) and all virtual CPUs w

It depends on the load of the virtual machines. Most will saturate your memory long before they saturate CPU.

Under Hyper-V on my current desktop I have a replica of several family members computers plus our NAS circa 2012 system images. I ran all of them overspecced on hardware to what they had then (all of them running 4GB RAM, and doubled core counts).

During the restore process all of them occasionally spiked the full load for either RAM or CPU. When all of them were done restoring and validating the entire usage was 512MB RAM per VM (Hyper-V allows dynamic allocation) and all virtual CPUs were handled by single digits of use on four cores.

I use VMs for retro and data recovery so it's hard to profile a machine. I allocate based on maximums. If you have a profile of the workload of a machine you can allocate based on tolerance.

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The limit is RAM really.

I used to run 8 to 10 CoreOS VMs as part of a test Kubernetes and Docker cluster. On my 16 GB laptop with a 4c/8t CPU. Each one used about 512 MB RAM and CPU usage was almost zero unless they were reacting to a service request.

So that’s about two VMs per core and 1 per hyperthread.

I was able to overload the laptop fairly easily by sending too many service requests in parallel. It was a good way to test the timeout mechanisms.

But everything was still sort of usable. And if you do tricks like telling the hypervisor to never use a particular CPU core, that core will always

The limit is RAM really.

I used to run 8 to 10 CoreOS VMs as part of a test Kubernetes and Docker cluster. On my 16 GB laptop with a 4c/8t CPU. Each one used about 512 MB RAM and CPU usage was almost zero unless they were reacting to a service request.

So that’s about two VMs per core and 1 per hyperthread.

I was able to overload the laptop fairly easily by sending too many service requests in parallel. It was a good way to test the timeout mechanisms.

But everything was still sort of usable. And if you do tricks like telling the hypervisor to never use a particular CPU core, that core will always be available for your operating system and applications.

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If you want to run SLOWer, use a solution like VirtualBox or Parallels, or VMWare Fusion. If you want to run at NATIVE speed, then install bootcamp, partition your drive with enough space to hold whatever windows apps you're going to be using, and then simply reboot, hold the option key down, pick your windows drive to boot from and when your machine comes up, it's a windows machine with no virtua

If you want to run SLOWer, use a solution like VirtualBox or Parallels, or VMWare Fusion. If you want to run at NATIVE speed, then install bootcamp, partition your drive with enough space to hold whatever windows apps you're going to be using, and then simply reboot, hold the option key down, pick your windows drive to boot from and when your machine comes up, it's a windows machine with no virtualization slowdowns. In fact, windows can run around 2.5x faster on mac hardware in native mode than on a similarly co...

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As always, it depends, on the workloads you are running and whether you are running them separately or simultaneously. The primary constraint is available storage as you need some for each individual running machine. These days, with containerisation and Docker, RAM and processor requirements are less of a concern for application separation as opposed to full on VMs.

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Q: How does a high core count affect the performance of servers, workstations, and desktops such as the Apple Mac Pro?

A: More cores delivers higher server app performance

Profile photo for Donald Miller

No, by definition any alternative running through an emulator (VMWAre or Parallels, for example), will be slightly slower than the native OS, because every instruction needs to be executed at least one extra time… though the visual emulator.

I usually explain this to people with this analogy: If two people speak the same language, it is easy to have a conversation. If you speak different languages and need an interpreter, the conversation is going to occur much slower.

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  1. Purcase and download OSX Server on the App Store
  2. Install Virtual Box (or whichever virtualization software you want to use)
  3. Install OSX Server
Profile photo for Jason Zi Seng Yeo

VMware typically has a configurations maximum guide for a number of their enterprise products, e.g. vSphere, Horizon View, NSX, etc. I just attempted a quick search for a similar document for VMware Workstation, but didn’t find one. Even if there is one, what I’m about to share below should apply as well.

Regardless of the product maximums, you should understand that each virtual machine will consume resources (CPU time, Memory, Disk Space) of your computer. In a typical PC, you will likely run out of these resources, well before hitting a workstation maximum.

Remember, virtual machines are all

VMware typically has a configurations maximum guide for a number of their enterprise products, e.g. vSphere, Horizon View, NSX, etc. I just attempted a quick search for a similar document for VMware Workstation, but didn’t find one. Even if there is one, what I’m about to share below should apply as well.

Regardless of the product maximums, you should understand that each virtual machine will consume resources (CPU time, Memory, Disk Space) of your computer. In a typical PC, you will likely run out of these resources, well before hitting a workstation maximum.

Remember, virtual machines are all sharing the same physical hardware. It may magically allow you to allocate more resources than you have, which essentially is to allow over commitment. This allows you to do somethings to test, but it doesn’t give you more of actual resource than physically exists.

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OSX Server was a separate MacOS server product (DNS, DHCP, Mail, SSO, Remote Login/home directories, etc.) that was an Apple competitor to Windows Server (without the AD) up until the time that OSX Mountain Lion ended (before OSX was renamed MacOS). It was at this point that Apple decided to move a few of the server features into OSX desktop and reduce the ones that OSX server provided, quietly exiting the server market. It was produced until around April of 2021 ending with the version MacOS Server 5.11.1, but is no longer available.

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OS X Server is an add-on to OS X that adds the following:

  • Some file-sharing tools to set up the OS X machine as a managed file server.
  • OS X Software Cache (it downloads updates and software from Apple, so other Macs can update from it rather than the Internet)
  • Profile Manager (includes Open Directory (like Active Directory), but also integration with the mail, calendar, and contact services, mobile provisioning profiles, license management, push-installs to Macs on your network, etc.)
  • Time Machine Server (backup Macs in your network to the computer running OS X server rather than local disks)
  • Xcode

OS X Server is an add-on to OS X that adds the following:

  • Some file-sharing tools to set up the OS X machine as a managed file server.
  • OS X Software Cache (it downloads updates and software from Apple, so other Macs can update from it rather than the Internet)
  • Profile Manager (includes Open Directory (like Active Directory), but also integration with the mail, calendar, and contact services, mobile provisioning profiles, license management, push-installs to Macs on your network, etc.)
  • Time Machine Server (backup Macs in your network to the computer running OS X server rather than local disks)
  • Xcode Server (for team development; this does source code management via and automated builds)
  • Wiki Server (to host a wiki on your network)
  • Mail, Calendar, and Contacts Server (host mail and calendars and a shared address book)
  • VPN Server
  • Messaging Server

... and a handful of system and network administration utilities not part of regular OS X.

Profile photo for Bacil Donovan Warren

I’ve run beta versions of OS X in VMWare to test software. There are also good arguments to running it in a VM for safety reasons, such as to isolate a server from the traffic that it handles, one of the same rationales for running other OSes in a VM.

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How do I run a Mac OS X on VirtualBox?

If I’ve understood the rules of grammar, correctly?

Your question should read ‘How do I run Mac OS X on VirtualBox?’

Profile photo for Jim Attrill

It mainly depends on what client operating system you are running. Some need only 1Mb to run ok and some need a lot more. Each client takes memory away from the host machine. So if you want to run many hosts, you need a lot of memory. The power of the host cpu comes into it as well. Personally, although I have a lot of guests defined, I only run one at a time and I have 14Gb main memory.

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There're several reason behind running Mac OS X in virtual environment

  • Test Mac OS before getting a mac
  • Develop apps to the iOS and Mac os ( because xcode only working on mac environment)
  • Curiosity about other operating systems.
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Virtual Box and Parallels also support virtualizing OSX Server on Mac hardware with the same license restrictions that Ben Hamilton has mentioned.

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You can run bunches of them, because the machine will task switch between the VMs.

If you mean “how many virtual machines can you run effectively on a single-core server?” - somewhere between 0 and probably 2. Depends on how much you strip down the host OS.

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Q: Can you use OS X Server on an iMac (not the trash-can model)? If so, which ones are compatible with it and why would one choose that over an iMac or MacBook Pro?

A: You can use it on all Mac models.

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Once upon a time it was a separate version of OSX that was for dedicated servers. Unfortunately those days are gone. Now apple thinks servers are an app.

OS X Server

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