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Virtualization

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Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.

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I have a two node plus witness cluster set up in VMware 6.7. The system is currently failed over to one host due to a bad vSAN network card in the other.

While waiting for the HW vendor to ship me a new card, I had to add another VM. It worked, but when I try to power the VM on, I get:

"No host is compatible with the virtual machine."

I assume it has something to do with the failover state? Is there any way to override whatever is causing the error and get the machine started? I don't think it's a real resource issue since there is plenty of memory and CPU available, but I switch the new VM down to 1 CPU and 512MB RAM just in case and it didn't help.

This environment is not in production, but I don't want to risk the other VMs not coming back if they shut down because other still need to test them.
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Introduction to R
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Introduction to R

R is considered the predominant language for data scientist and statisticians. Learn how to use R for your own data science projects.

I have a vm 2008 server with a single disk, partitioned into two drives.  The C drive is full.  Does anyone have a step by step guide using VMware Disk Manager to split these into two vmdks?
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Hi

We have Fujitsu Primergy RX200S7 server and the company who did the server consoladitation went into administration.

So sure what is the default password, i tried user name and password as admin.

It is not taking the password:

Please post me tutorials to reset the password. Is this risky procedure?

Any help will be mush appreciated.

Many Thanks
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Hey all,

I have just taken over a site and one of the critical servers (VM1) is running out of disk space on the C:Drive. Host is running Hyper-V with plenty of space for allocating extra stroage to VM1. The weird thing is that when I look the Disk management within the VM, it shows that there is space that hasn't been allocated. It also has a replica of free unallocated space on the D:Drive which is very odd.

I would ideally  like to just expand the C:Drive - is this safe to do so knowing I have good backups also?
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https://www.cloudcomputing-news.net/news/2016/oct/31/agentless-vs-agent-based-architectures-why-does-it-matter/
https://aws.amazon.com/marketplace/pp/B01LXMNGHB?qid=1541553180900&sr=0-1&ref_=srh_res_product_title

Extracted from above links, "Agentless services, on the other hand, talk directly to the underlying cloud platform (e.g., AWS, Azure)...",

Q1:
Is AWS' AV subscription now an agentless AV?  Is this the agentless Deep Security?

Q2:
If there are appliance VMs (eg: highly stripped-down Linux), is it the way to go to
adopt agentless (as we may subscribe to say Commzgate SMS or cloud-based
services) AV/end-point IPS as agents can't run/install in the stripped-down guest
OS?

Q3:
in the case of AWS' AV/IPS service (ie the 2nd link above), is this an SaaS of FaaS
(Function as a Service)?
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Hi,

I have a Veeam VM I used to back up my production host VMs with, as well as replication to a DR box.  I increased the size of the drive for the backups, then realized I need to increase the size of another drive.  vSphere threw an error: 'Cannot complete operation due to concurrent modification by another operation'.

There are no other concurrent operations active on this host, much less VM.   I also looked at the disk management in the VM and it sees the additional space allocated to the first drive.  Oddly though, the 'expand the partition' option is grayed out.

I'm on vSphere 6.7 using vCenter web client.

Thanks!

--Ben



--Ben
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We are moving some of our apps/systems to the cloud.
However, some vendors for the cloud projects came back to
say that the OS is a stripped down Linux which is hardened
& that it's not applicable to install/run AV.

In view of high profile attacks and audit requirements, I
loathe to raise exemption/deviation even if the cloud VM
is not accessible to public (ie firewalled to our corporate
only).  I noticed that AWS & another vendor that uses VM
on WIndows guest offers AV

Q1:
Is there a quick/easy way for me to verify that the 'strip-
down Linux OS' the vendor uses in the cloud truly could
not support AV?  Guess by running 'uname -a' is not
enough.  Or is there a script for me to verify?
Or can I verify by checking what are the past patches
they had been applying?  If it's all RedHat/Rhel patches
then, it's just simply a hardened RHEL which should
support many AV

Q2:
What are the usual audit requirements for AV for a custom
Linux VM in the cloud?  Don't really need an AV under what
criteria?

Q3:
If it's truly a stripped-down Linux say based on CentOS or
FreeBSD, can I assess the patch requirements based on
CentOS & FreeBSD?  I recall when running a VA scan
against a PABX that's based on RHEL, all vulnerabilities
for RHEL are applicable & the PABX vendor produces
the patches though they are behind RedHat by a few
months in coming out with the patches.

This reminds me of IOT, many of which are appliances
that customizes their OS from …
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As I know FT and clone exist in VMware and also ESXI in the cluster for VM's availability. But, VM will reboot at next esxi  when the hardware fails.
Then, What is tVM cluster?
Is it something we have to do at application layer?
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I updated our 6.7 VCSA to U1 using VMware-vCenter-Server-Appliance-6.7.0.20000-10244745-patch-FP.iso

The ESXi Host is at build 10302608.

I rebooted ESXi Server and VCSA after the install.

When I login to the ESXi Host and click on VCSA (vCenter), i see the below warning:

The configured guest OS (Other 3.x Linux (64-bit)) for this virtual machine does not match the guest that is currently running (VMware Photon OS (64-bit)). You should specify the correct guest OS to allow for guest-specific optimizations.

If i login to vCenter and click on VCSA (vCenter), I do not see the warning?

What is the casue of this erroor when logging into the ESXi Host and what is required to corect it?

thanks
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Hi,

I copied a Windows Server 2008 domain controller (Hyper-V VM) from company to my home for testing. I impoted the VM and seized all FSMO roles to this dc.  DNS server and all AD tools cannot locate the AD information after I restart the dc everytime. Please refer to the following screenshot.




After I used the tool NTDSUTIL and submited  roles -> connections, All DNS and AD services decame normally.




I want to know that why happpen this issue and how to fix it.

Note this domain contain 6 DCs, however, I only copied one dc to my home network and I will delete the other five dc later.

Thomas
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Acronis Data Cloud 7.8 Enhances Cyber Protection
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Acronis Data Cloud 7.8 Enhances Cyber Protection

A closer look at five essential enhancements that benefit end-users and help MSPs take their cloud data protection business further.

I am working in Horizon 7.0.3. We have a floating pool of linked clone non-persistent VMs.  They are Win 7 Pro. Using Persona Management and Folder Redirection, users profiles are saved to a network share. Files are available on each computer but they are unable to preserve settings (desktop background, saving credentials in Chrome/IE, and desktop icons revert to the "snapped in" location on the left-side of the desktop instead of where the user places them).

Thing is, when I login to this pool using my account (domain admin permissions) my settings are preserved from session to session. I have been testing with my account for about 5 days and nothing has reverted. My test account, which mirrors the users accessing this pool who are not domain admins, exhibits the same issue of not preserving settings.

The permissions set on the share where the profiles are stored seem to be identical on my account which is a domain admin and the others which are not domain admins. I created a GPO to add my test user to the local admins group on desktops accessed in this pool. I did this since domain admins get local admins rights on these computers but from what I can tell this didn't make a difference.

Further, I inherited this about 2 weeks ago. I am told that at one time all of this worked but I have not yet figured out what changed before I got here nor when exactly it changed.

I am not opposed to creating a new profile / folder redirection share or a new golden image for …
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Hi All,

I have a dilemma and wanted to get some feedback.

We have some Hyper-V server hosts that are lease is up and management is sending them back to Dell and a new Hyper-V server is being built as we speak.

The issue I am most concerned about is that the FSMO role holder virtual is on the Hyper V host that is going back.
This VM is currently backed up daily with VEEAM.

Here are the options for moving and or removing this server off of our host that is going back and not taking down our whole Active Directory.

1. Move FSMO roles to Physical 2016 DC, and move DC to new server and import into new host.
2. Restore Virtual to new host with VEEAM. ( I am concerned with different versions of Hyper V backing up and restoring too)
3. Demote the DC all together after transferring FSMO roles and rebuild new DC on new host.

The reason we use a virtual is because of back up.  I back up the physical DC but only C drive and system state.  VEEAM backs up the whole DC.

Any thoughts or new suggestions are appreciated.

Thank you,

karen
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trying to migrate some vms on old 5.5 hosts to new vcenter 6.7.  I was using Veeam quick migration but i have a host that is running 5.5 free hypervisor, so veeam won't work on it.  Is there a minimal impact way I can migrate these?
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Can I change the block size of the disk when I use VMware converter?

So lets say for example, I have a vm in one datacenter in vcenter, and I want to use VMware Converter to migrate it over to another datacenter.  The goal here is to be able to change the block size of the virtual disk from 4K to 8K block size.  This is for Deduplication Optimization that Simplivity uses on the destination Datacenter

Please give me your thoughts!  thanks!
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Hi Expert,

I wanted to start learning some Vmware basic, I was wondering how should I start off, as Vmware is not free and have different type of version. Appreciate if any expert can advise me on.

Thanks!
2
Veeam gives an error when i try to backup "archive server with size 1,8 TB" But other server jobs works properly.
A have already tried - solution with registry data to increase time from 900 to 1800. But it didnt help.
Any idea?

error: VSScontrol: failed to prepare guest for freeze.wait timeout 900
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Hi all :)

I am working with VMware Workstation 14.

I am finding that I have to constantly hit CTRL-G to grab the keyboard within my VM consoles.

Is there some way to set this as always on??  its getting VERY tedious.

thanks
Tracy
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I have a small 2 host HyperV cluster with about 4 VMs on each host.    When we go in to do our monthly updates, we dont want the machines to move.   We do them very hands-on.   We patch all 8 VMs.   Then we shut down or suspend the VMs and do the hosts.     No matter what we try including shutting all VMs down, HyperV moves the VMs to the host that is up.   How can we temporarily suspend the automated movement of these VMs?  

~Jon
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I am considering adding a GPU to my Citrix VDI environment.  
The current hardware is brand new:
  • HPE ProLiant DL360 Gen10 (2)
  • 256 GB RAM
  • 10 GB NIC
  • Non-Persistent Disk model

The workload is standard MS OFFICE, Internet, some simple education videos from time to time.
I was thinking adding the Nvidia GRID.  I know there is licensing for this system so I will take this in consideration.

Has anyone deployed a GPU to their VDI environment and was it worth it?
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The 7 Worst Nightmares of a Sysadmin
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The 7 Worst Nightmares of a Sysadmin

Fear not! To defend your business’ IT systems we’re going to shine a light on the seven most sinister terrors that haunt sysadmins. That way you can be sure there’s nothing in your stack waiting to go bump in the night.

I have a vmdk file that is 106 GB in size for a Win 7 image.  Thus I can't upload it to any cloud storage such as OneDrive, Box, DropBox etc.   So I think it's this size due to when I created the VM, I chose some setting that made it one big vmdk file.   I have another image for Win 10, that created a bunch of smaller vmdk files and I can upload those.

My question is, am I stuck with this super sized file or is there a way to change it to where it creates smaller vmdk files?
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I have a server 2012 with a Raid 1 hosting a virtual machine. Total allocated disk is 460 gb and the virtual machine disk space was filled up somehow very fast. Hyper.v machine wont boot as a result. Can I pop another hard drive in that server to reallocate a larger raid disk size to increase the space? If I put a 2tb in there can I somehow fix this?
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I am trying to restore DFSR after the complete failure of a hard drive hosting a virtual machine. This is Server1.  There are only two machines in the network, and the other is Server2 which was not affected by the failure.  The DFS-R is between the Data drives only.
The data was on a virtual drive on another hard drive and is safe [albeit a few days behind].  the original data drive and contents have been successfully attached to the virtual machine
I am getting the following error when I do a health diagnostic report [attached]  using Server 1 The DFS Replication service stopped replication on replicated folder Downloads at local path f:\Downloads due to Error ID: 9098 (A tombstoned content set deletion has been scheduled). Event ID: 4004

From Server 2, I get the following error "The DFS Replication service stopped replication on replicated folder Downloads at local path f:\Downloads due to Error ID: 9098 (A tombstoned content set deletion has been scheduled). Event ID: 4004"Server2Health-ad.aedc.com_downloads.html

My current fresh data is on Server2, and I am getting the error on the newly installed Server1.  Server 2 now hosts the FSMO items, and is the most current server.

What is the best solution to remedy this?
Server1Health-ad.aedc.com_downloads.html
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Have 6 2016 host servers for Hyper-V HA Cluster configuration. 2 hosts will run 2 DC, 2 RDS Brokers, 2 APP servers. The other 4 hosts will be running 3 to 4 VM RDS Session Hosts VMs per device.
 
I envisioned these physical servers as 2 clusters. One for the 2 hosts for the DC,RDS Broker, APP servers and the second for the 4 VM RDS Session hosts.

Probably more of an opinion - anyone note pros and cons of having two separate clusters or one cluster for all. Data/Shares and VM images will be on a NAS.
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I have put myself in a predicament.  I have a VM running active directory. I have the users docs redirected.  The problem is that I ignorantly created the storage disk containing the redirected folder as a pass-through disk.  I did not realize that Windows Server can't create checkpoints and snapshots of VMs containing pass-through disks.  This trickles down to my Unitrends Backup solution as well (No snapshots no VM backups). I need to correct this so all is right with the world. My question is I have never backed-up users redirected folders and moved them from a pass-through disk to a Virtual Disk.  Should push the docs back to the users local profiles first.  Then change the disk to a VD and then redirect the to it. or can I just copy the data over correct the disk and dump the user data back on the new VD.
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Issue with 2008 R2 server in which we cannot RDP to the server. When we try, we get a black screen.
The server is running just fine and it is a VMware vm but cannot get to it via rdp pr the vsphere console.
We have tried to reboot the server but no difference.
0

Virtualization

17K

Solutions

11K

Contributors

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.