Hot answers tagged

10

There are downgrade rights, but not a downgrade path. In other words, wipe and reinstall.


5

In Windows Server 2012 R2, "The clustering service will automatically assign the witness a vote, the witness dynamic vote, depending on if there is an odd or even number of votes present for the cluster nodes." Dynamic Witness in Windows Server 2012 R2 Failover Clustering "To check the vote status of the witness, use the Windows PowerShell command below. A ...


5

Using get-ADServiceAccount there is an attribute for hostComputers: Get-ADServiceAccount -Filter {HostComputers -eq "CN=SQL-Server-1, DC=contoso,DC=com" } Enabled : True Name : service1 UserPrincipalName : SamAccountName : service1$ ObjectClass : msDS-ManagedServiceAccount SID : S-1-5-21-159507390-2980359153-3438059098-29770 ...


4

You have two options in order to create a Hyper-V Failover Cluster using your current hardware: 1) Windows Server 2016 with Storage Replica http://www.tech-coffee.net/storage-replica/ that assumes a manual failover in case one of the servers fails or Storage Spaces Direct http://windowsitpro.com/windows-server/what-storage-spaces-direct that need at ...


4

You're downloading all the available updates for 7 (or 11 or 12, you don't specify architecture) operating systems, 5 (or 10, you don't specify architecture) versions of Office, and a version of Exchange. ~200 GB sounds about right. Excluding superseded updates, if you haven't already, might help, as well as dropping any of those OSes or products that you ...


4

Mixed OS version clusters are not supported. Get all of your servers on the same version. See: Planning for high availability and site resilience (Microsoft Technet) Each member of a DAG must be running the same operating system.


3

In order to create a true “shared-nothing” failover file server you can use a free Starwind solution https://www.starwindsoftware.com/starwind-virtual-san-free. Basically it can do the same that Windows Server 2016 will do later but unfortunately only in the Datacenter edition. Starwind can do it already even with a free Hyper-V 2012 server ...


3

What kind of storage do you use as shared storage where your CSV’s are hosted? If it’s a software solution (software-defined storage), I would recommend turning native CSV caching off and use solution’s cache instead. Software-defined storage like Starwind for example has it’s own DRAM caching which can work in write-back mode (CSV has read-only cache) and ...


3

You asked a very specific question -- what does the CSV cache do under memory load? The answer is that memory is allocated to the CSV cache statically, and never released. So if you experience a failover, that memory is not available for anything else, like picking up VMs that might need to run. I suspect that, after a relatively small allocation (the ...


3

Michael Brown already answered it, just wanted to add: CSV is currently the best practice storage configuration for both Hyper-V, SQL FCI, and SoFS. 99% of the clustered systems I configure for the customers are built on CSV and remaining 1% uses DAG and AlwaysOn AG like BaronSamedi1958 mentioned above. Also,CSV now has a benefit of ODX (Offloaded Data ...


3

Your storage system is failing or too slow to keep up. If IO has been stalled for too long, Exchange thinks that storage is dead and kills Wininit to force hard reset. See https://technet.microsoft.com/en-us/library/ff625233.aspx and scroll to the end. It's the same for 2013 and 2016. In some cases, the entire storage stack may be affected by the hang, ...


2

I don't have a solution for you but I kinda felt this deserves at least some sort of answer: To state the obvious, a machine is highly dependent on its storage. In a highly-available environment - where all VMs can run on any node - the nodes must all be able to see the storage for a VM otherwise they cannot be a host for that VM. So clustered shared ...


2

This is, in fact, possible: Boot the system using a linux live cd with gdisk on it. I used a CentOS 7 Core installation and used recovery mode. I did this by editing the grub boot options and tacking on rescue to the end. Run gdisk on the disk with Windows installed. See the gdisk docs for more info. Reboot the machine into a Windows installation disk, ...


2

I prefer to go through the process of shutting them down individually through the management console. While fairly rare, there are times the VM state has an issue or won't shut down properly on it's own. This gives me a chance to make sure all of this happens in the manner that I expected. Not to mention, there are times that the VM itself doesn't always ...


2

Do you have routing and remote access service installed? If yes, try to disable it (RRAS uses SSTP by default and it listens for 443 port and lsas.exe process which is using port in your situation is used for IPSEC also).


2

You can safely extend the VHD. You need to extend the volume in the guest, too, afterwards. Just delete the folder.


2

The repeated code can be avoided by using an array and a foreach loop: $logfolder=("D:\Folder\One","D:\Folder\Two") $age=(get-date).AddDays(-3) foreach ($logfolder in $logfolders) { Get-ChildItem $logfolder | where-object {$_.LastWriteTime -le $age -AND $_.Attributes -notlike "*Compressed*"} | ForEach-Object { compact /C $_.FullName } }


2

In our enviroment we set up a Service Bus Farm DNS and balance Service Bus traffic for ports 9354 and 9355, because only this ports are presented in Service Bus connection string. We use LVS (https://en.wikipedia.org/wiki/Linux_Virtual_Server) instead of NLB but I don't think this could be an issue for you.


2

CSV is layered on top of some physical shared storage so you can have CSV without shared storage. https://en.wikipedia.org/wiki/Cluster_Shared_Volumes You can still have a cluster without shared storage / CSV say Exchange DAG and SQL Server AAG. https://technet.microsoft.com/en-us/library/dd979799(v=exchg.150).aspx ...


2

This is because your CA is Standalone CA type, not Enterprise. In Microsoft terminology, Standalone CA is literally standalone. It doesn't require Active Directory or network connections at all. As the result, Standalone CA requires certificate information to be placed in the request and doesn't offer enhanced enterprise-level features. This CA type is best ...


2

AD Trusts don't have any direct relationship to networks or subnets. Your problem is more than likely due to a lack of Conditional Forwarders or Stub Zones on one side of the proposed Trust. In each domain you need to configure Conditional Forwarders or Stub Zones) for the other domain that directs DNS queries for that domain to the DNS servers for that ...


2

There are 2 possibilities, DNS issues or firewall issues. Try changing the domain firewall on the new DC. If that fails make sure the new forest resolves properly from the old PDC emulator.


2

This link lists the benefits of CSVs https://technet.microsoft.com/en-us/library/dd759255(v=ws.11).aspx q1) can multiple VMs on Node1 run in the same clusterdisk? I don't think that is possible (the article says no). Even if you could add multiple VMs to the same Clusterdisk it would mean if a single VM failed or needed to be moved it couldn't be moved ...


2

You should link the page that quote comes from because it doesn't really make much sense. The TH2 (Threshold 2) update only applies to Windows 10. I'm open to being wrong, but I find it hard to believe that Microsoft would back port cosmetic start menu changes from Windows 10 to Windows Server 2012 R2. The first server OS where you'll likely get the ...


1

Apparently you can take the shared VHDX offline (the shares will be unavailable), either by shutting down the clustered guests or by unmounting it, and then change the size of the VHDX and then bring it back online (or boot the guests). A few web searches have turned up people writing and agreeing that that's the only way to do it. There's one such ...


1

@end This would work, if the file would be javascript file (.js). Since you are using batch file, you should use exit /B n to quit batch file, where 'n' is exit code. (Source)


1

As a small program based solution you could write a small app which implements a FileSystemWatcher and the Created event. Then when the event fires you could use a RegEx pattern to make sure the name only contains legal characters, if the match returns false then delete the file. As for providing some feedback to the FTP session I'm not sure if that would ...


1

It sounds to me like you have configuration issues rather than it being an issue with AD. If the DC holding the FSMO roles (including PDC emulator Role) goes down then things will be a bit tough but if you have a second DC users should be able to authenticate, you should be able to create new users and features like GPOs should still process. Presuming ...


1

I think you're going to run into major issues running both IIS and VisualSVN, which installs and runs on Apache, on the exact same server. If I were you, I'd separate them out and give each web server their own VM. I know this doesn't directly answer your question but I'm wondering if your original posted problem is not a symptom of trying to run both web ...


1

The changes you have highlighted were introduced in Windows 2012-R2, specifically for SoFS. SoFS is very read-intesive and would greatly benifit from higher cache settings (max-80% / recommended-max-64GB) For Hyper-V the recommendation is to be more conservative, in regards to memory allocation, for exactly the reason you highlight. the CSV cache will be ...



Only top voted, non community-wiki answers of a minimum length are eligible