Good morning,
I have 02 virtual machines on my PC (01 computer with Windows Server 2019 with 3 Gb of ram and another computer with Exchange 2019 with 6 Gb of ram), but I work very slowly,
When I use the machine with exchange my hard drive is 100% saturated leaving the equipment unusable
These are the characteristics of my equipment (Amd Ryzen 7 5700G CPU, 16 Gb RAM and 1 Tb HD with Nvidia Geforce GT630 video card)
Could you tell me the correct configuration that I should have?
VirtualBox with Exchange
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Re: VirtualBox with Exchange
Start the VM from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.
Right-click the VM in the main Virtualbox window's VM list, choose Show in Explorer/Finder/File Manager. In the "Logs" subfolder, zip the VM's "vbox.log", and post the zip file, using the forum's Upload Attachment tab. (Configure your host OS to show all extensions so you can find the "vbox.log", not "vbox.log.1", etc.)
Right-click the VM in the main Virtualbox window's VM list, choose Show in Explorer/Finder/File Manager. In the "Logs" subfolder, zip the VM's "vbox.log", and post the zip file, using the forum's Upload Attachment tab. (Configure your host OS to show all extensions so you can find the "vbox.log", not "vbox.log.1", etc.)
Re: VirtualBox with Exchange
Thanks for answering,
I attach the logs.
I attach the logs.
- Attachments
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- VBox.zip
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Re: VirtualBox with Exchange
Good afternoon,
Please help me with the review of the logs,
Please help me with the review of the logs,
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Re: VirtualBox with Exchange
Math time. 3+6 = what?
How much RAM do you actually have? (Hint: it's less than half a page into the logs).
So, yeah: hardly a surprise. Fix that and you'll be... well, probably not "okay", given what a bloated pile Exchange is, but hopefully at least noticeably better off.
How much RAM do you actually have? (Hint: it's less than half a page into the logs).
So, yeah: hardly a surprise. Fix that and you'll be... well, probably not "okay", given what a bloated pile Exchange is, but hopefully at least noticeably better off.
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Re: VirtualBox with Exchange
Sorry, looks like we forgot about this one.
I believe arQon is pointing out overprovision of RAM in the VMs:
With high-RAM VMs like these, starting them immediately after boot & login on the host would give them room.
I believe arQon is pointing out overprovision of RAM in the VMs:
The logged VM's 6GB + the reported 3GB for the other VM would be beyond the 8.5GB available in the logged session.00:00:02.895873 Host RAM: 16273MB (15.8GB) total, 8754MB (8.5GB) available
00:00:03.186837 RamSize <integer> = 0x0000000180000000 (6 442 450 944, 6.0 GiB)
With high-RAM VMs like these, starting them immediately after boot & login on the host would give them room.
Alexff wrote:When I use the machine with exchange my hard drive is 100% saturated leaving the equipment unusable
If this is a spinning-platter drive, not an SSD, then my experience says 3 OS's on one HD are too much. My multi-VM hosts were able to handle 2 modern OS's on one spinning-platter drive. The third kills performance: the drive heads can't move around fast enough to satisfy all three. Especially with Exchange in the mix.Alexff wrote:1 Tb HD
Re: VirtualBox with Exchange
Sorry, I didn't understand the answers
I have 16 Gb ram and 1Tb of rotating hard disk not SSD, please, could you clarify the answer..
I have 16 Gb ram and 1Tb of rotating hard disk not SSD, please, could you clarify the answer..
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Re: VirtualBox with Exchange
Two VMs on one host OS are too much for a rotating hard disk. Add another disk, and "Move" the Exchange VM to it.Alexff wrote:1Tb of rotating hard disk
"Move" is a command in the main Virtualbox window. Right-click the VM in the list, choose Move, pick a folder on the new disk.
If you can change the rotating disk to an SSD your PC will be tons faster. And you may not have to Move the Exchange VM either.Alexff wrote:not SSD
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Re: VirtualBox with Exchange
The requirements for the host are not "larger than the largest VM you want to run", they're "larger than the totals of all the VMs you want to run to run concurrently and the host". When your hardware doesn't meet those totals things may or may not still run, but at best they will always do so with reduced performance.Alexff wrote:Sorry, I didn't understand the answers
I have 16 Gb ram and 1Tb of rotating hard disk not SSD, please, could you clarify the answer..
Imagine you have four glasses of the same size: three that are all more than half full, and one that's empty. Your current position is the same as saying "I can pour any one of the glasses into the empty glass, therefore i can pour all three of them into it".
Hopefully that helps you visualize your problem a little better. This is a common source of confusion for people new to virtualization, and you're far from the first to be tripped up by it.
So, no: you do not "have 16Gb ram" that you can use for these VMs, because all the other "stuff" on the machine needs a place to live too and is taking half of it. You have 8GB available, as the logs say, into which you're trying to fit 9GB of VMs. Since 9 is more than 8, the machine is swapping to the (slow) hard drive, on top of the three copies of Windows you're trying to run that are all doubtless also scanning the drive on a near-constant basis for Windows Search and antivirus and so on, on top of Exchange doing the same for any mail in it, on top of whatever else any of the three machines need for actual work.
You have neither the RAM needed for what you're trying to do, nor anything like adequate I/O for it. Reading https://en.wikipedia.org/wiki/Thrashing ... r_science) may help.
My suggestion was that you remove the RAM pressure by either configuring the VMs appropriately, or removing some of the stuff you're running on the host. It's your machine, so it's on you to figure out how much of that is garbage (for example, running Chrome with 100 tabs open) and how much actually needs to be there.
Scott's suggestion was that you improve the I/O, which will certainly help, but IMO doesn't really address the root of the problem.
Ideally, you would do both.