13
votes
Accepted
server 2016 active directory and hyper-v same server
Having 2-node cluster, it's beneficial to have at least 2 AD DC VM's each located on a separated host. In case of a host failure, you will ensure the AD is up and running. The AD running on a VM also ...
- 3,878
7
votes
Clustered File Server on Windows 2012 With Local Storage
Based on the shared storage requirement I assume it's AlwaysON FCI (Failover Cluster Instances)
The easiest solution for you would be deploying a virtual SAN.
Virtual SAN will take the local storage ...
- 5,301
7
votes
Microsoft iSCSI target server 2016 failover cluster doesn't work in Server Manager after transfering roles
I see similar issue posted on technet. Is there any chance to see what does Event Log show?
For the case, from my experience, Microsoft iSCSI target is too slow. Currently, I use StarWind Virtual SAN ...
- 3,878
7
votes
Accepted
Nano Server attached to SAN doesn't see new files
NTFS is not a cluster-aware file system. It was never designed to support simultaneous access from different clients.
In order to allow multiple access: configure MPIO, deploy the Failover Cluster ...
- 4,907
7
votes
Accepted
Is there any way to prevent Storage Spaces Direct from automatically adding disks?
Yes, you can disable the auto-pooling behavior. The experience is not great, but it’s certainly do-able and supported. The setting name, and example cmdlet syntax, is in the Settings section of this ...
7
votes
Accepted
Mapping SAN to cluster nodes
Oh god, you've not have you? You've just caused immediate, irretrievable data loss sorry.
NTFS isn't a cluster-aware file system, you need something to act as a lock manager too.
MS Cluster Services ...
- 101k
6
votes
Accepted
VMXNET3 receive buffer sizing and memory usage
What is the relationship between number of buffers and ring size?
They're related, but independent. The rx "ring" refers to a set of buffers in memory that are used as a queue to pass incoming ...
- 101
6
votes
Miserable performance of Hyper-V storage on CSV
If you use Broadcom NICs, try to disable VMQ on a virtual switches and on a physical network adapters: http://www.dell.com/support/article/ua/ru/uabsdt1/SLN132131/EN
You might also check if there are ...
- 8,936
6
votes
Accepted
Storage Spaces Direct HDD MediaType is unspecified
You have to have supported media types with Storage Spaces Direct which is no-RAID, no-FC and no-iSCSI. Should be SATA, SAS and NVMe.
https://docs.microsoft.com/en-us/windows-server/storage/storage-...
- 13k
6
votes
Synology HA active-passive performance and failover
Decouple your Synology HA setup, RMA one of these units with "Your HA does not work!", and get VMware or similar vSAN to enjoy local disk performance, and reliability. Whatever you'll do you won't ...
- 13k
6
votes
Accepted
Edit HA cluster config cib.xml
You're definitely correct in saying you don't want to edit the cib.xml directly.
Since you're using pcs to manage your cluster configuration, you should do it like this:
Dump the current cib to a ...
- 1,928
6
votes
How does Virtual IP work for failing over a TCP connection to a backup server to accomplish high-availability?
We should clarify some terms and technology.
The image you show is that of a "Load Balancer." While technically, the Load Balancer will usually have one or more "frontend" IP addresses that connect ...
- 3,448
6
votes
Accepted
Internal storage as HA failover cluster storage pool ?
As comments bellow say, Windows Server 2016 Datacenter Edition has built-in Storage Spaces Direct (S2D) that allows to implement/setup hyperconverged cluster of 2 or more nodes. However, it has been ...
- 3,878
6
votes
Why can't I make a failover cluster using iSCSI for shared storage?
Take something like Starwinds and create Highly Available shared storage with your two nodes. AFAIR, they have a lot of manuals which may help you. BTW, it's for free.
https://www.starwindsoftware....
- 5,301
6
votes
Accepted
How to setup IIS on Failover Cluster with Shared Data
The NTFS/SMB permissions for shared IIS storage are detailed described in ms guide:
https://docs.microsoft.com/en-us/iis/web-hosting/configuring-servers-in-the-windows-web-platform/configuring-share-...
- 8,936
5
votes
Accepted
Why do I get BPA error "Servers in Failover Clusters Must Have a Hyper-V Replica Broker Configured"?
I'm not sure why that is considered an error rather than informational but the gist of it is, if you plan to use Hyper-V Replica then you need to configure a Hyper-V Replica Broker. If you don't plan ...
- 109k
5
votes
Accepted
Get witness disk current vote via PowerShell
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 ...
- 88
5
votes
How to use Docker with HAProxy+Keepalived?
You may need to enable non-local binding on the docker host.
Add net.ipv4.ip_nonlocal_bind=1 to the end of the /etc/sysctl.conf file and force a reload of the file with the sudo sysctl -p command.
- 151
5
votes
Which technology allows shared storage for clusters with preferred local reads and writes?
Since you about deliver shared storage system having local I/O preferably, I would suggest to look at solutions that do kind of asynchronous replication between clustered hosts.
I suspect the ...
- 3,878
5
votes
Storage Spaces Direct HDD MediaType is unspecified
Right, using Storage Spaces Direct in two or three nodes configuration is not the best idea. There are a lot of solutions in this niche like HPE or Starwind. HPE Storevirtual works with two nodes and ...
- 5,301
5
votes
Accepted
Synology HA active-passive performance and failover
Unfortunately, Synology HA feature does not support active-active mode. If you want to speed things up you might do RAID0 but it’s quite dangerous and will completely load your networks (especially on ...
- 8,936
5
votes
Accepted
How to securely encrypt Hyper-V VMs in Failover Cluster
The performance will fall anyway. No need to double encryption.
I would not recommend using TrueCrypt fork-outs.
Configuring BitLocker on Cluster Shared Volumes does the job.
- 4,907
5
votes
Mirroring 2 Host with their own local storage
Look at StarWind VSAN 2-nodes hyperconverged solution on VMware here.
It gives a possibility to mirror storage between the hosts and present it as HA datastore to the cluster. Virtual Machines can be ...
- 8,936
5
votes
Cluster Fails when Enabling Storage Spaces Direct Server 2016
Don’t do S2D with only two nodes as it’s nothing but begging for troubles! Failover isn’t reliable and you can’t lose second node (obviously!) or second disk/ssd in a row. In RL it means your cluster ...
- 13k
5
votes
Cluster Fails when Enabling Storage Spaces Direct Server 2016
Plus one for not to use S2D with two nodes. Starting from poor reliability and ending with short features list in such scenario. There are a lot of topics with comparing S2D with any other solutions, ...
- 5,301
5
votes
Accepted
vSphere 6.5 HA agent cannot be correctly installed or configured
I know you mention you already tried it, but in case it helps someone else I just wanted to say that the solution for us was to disable / remove the HA configuration entirely from the entire cluster ...
- 66
5
votes
Accepted
DRBDManage with Pacemaker on CentOS 7
DRBDmanage will not work correctly in “pure” 2-node setup, because of lost quorum.
drbdmanage will work properly in following cases:
1 node
2 nodes and both are online. Otherwise the quorum will not ...
- 8,936
5
votes
On Server 2016, can i set up a cluster and install MDT so that MDT is highly available?
There is an option to build distributed MDT environment, which can cover your needs.
https://docs.microsoft.com/en-us/windows/deployment/deploy-windows-mdt/build-a-distributed-environment-for-windows-...
- 5,301
5
votes
Azure datacenter 2019 failover cluster unresponsive after reboot only when shared disk is assigned CSV
That is a known problem that our customers stumbled upon as well. Recommendations from Microsoft support have been the following:
Check if you are using premium SSD as a shared disk;
Make sure to set ...
- 6,161
5
votes
Virtual active directory on disk storage - good practice
Having a DC as a VM on cluster shared volume inside the cluster is not the best idea since sometimes a cluster cannot be started if the domain controller that is located on the clustered resource is ...
- 6,161
Only top scored, non community-wiki answers of a minimum length are eligible