HA cluster NIC TCP Checksum offloading
We have two geographically separate HA networks. Ea with 3 2012 hosts and multiple guest VMs. We recently had to disable TCP and UDP checksum offload on one host and the Exchange VM sitting on that...
View Article"There was a problem mounting the file" Server VHDX down
HiWe have a Server 2012 file server VM that has a 20 TB (3.73 actual size)dynamically expanding vhdx. All VMs are hosted on Hyper-V cluster. All VMs are stored on SOFS shares.Randomly(about every 6...
View ArticleOOD and EVEN cluster, looking simple and small definitions
Hi fail over clustering means redundancy question here is redundancy what is basic components or definitions for e.g quorum what is quorum, how types of quorum, what are settings used in quorum, which...
View ArticleAll VMs crash when we loose Layer 3 connectivity
Greetings, any chance that you could clear up a SCVMM debate that we have been having for some time. We have a Windows 2012 R2 8 node cluster using SAN storage (System x3850 X5 & Emulex 42D0494,...
View ArticleFailover Cluster DFS migration issue
Hi All,I have a Windows 2008 R2 Failover Cluster.I have a Windows 2012 R2 Failover Cluster.I have been able to use the Copy Cluster Role to migrate 70 VM’s and the DHCP service from the Windows 2008R2...
View ArticleARGH!! SMB share listed in Server Manager, but cannot view on disk
We have an application SMB share (lets call it HYPERSHARE_1), hosted on a CSV. The share is visible within server manager, but states that it contains only a few hundred MB of data, as opposed to the...
View ArticleMulti subnet failover cluster setup
Hi.Cluster services already created also working with multi subnet failover clusterTotal three Nodes, Two Nodes hosted in Primary site and One Node hosted at Remote Site all the nodes are installed OS...
View ArticleAll Guest VMs Paused Due to Incorrectly Reported Avaialble Space on CSV
We have a 3 node Server 2012 R2 Hyper-V Cluster and we use DPM for backing them up. Today all the guests went into a paused state with Failover Cluster Manager reporting there was less than 1GB free on...
View ArticleHow to move SAN disks (LUNs) from one node to another node quickly?
Dears,I have a two nodes SQL cluster, there are five SQL instances, each instance uses 6 LUNs, so total I have 30 Luns; if I want to reboot the active node the cluster service will take long time to...
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Access denied when validating configuration for a failover cluster
Hi,i've spent days now trying to install a cluster on two virtual Server 2012 R2 nodes running on ESX 6. No matter what i try it always comes back to the following error in the validation report:An...
View ArticleFailover Cluster Storage requirements
Hi,can I use internal SATA drives of one Hyper-V host to create an iSCSI SAN for use by a Failover Cluster ?Both Hyper-V hosts will be Server 2012R2.If VM with file server role fails, other VM (either...
View ArticleCluster Services Won't Start After OS Upgrade
On a two node SQL 2012 cluster, I evicted the passive node and did an in-place upgrade from 2012 Standard to 2012 R2 Datacenter which happened fine without much issues.Now when I am trying to start the...
View ArticleSteps for manual failover on a cluster
Hi All,I've just started my training as an SQL DBA and I would like to know what the proper steps are for failing over a cluster. To test this I have build a 2 node test Cluster can you please advise...
View ArticleSteps to manually fail over SQL availability groups
Hi All,I've just started my training as an SQL DBA and I would like to know what the proper steps are for failing over anHi All,I've just started my training as an SQL DBA and I would like to know what...
View ArticleMonitoring Server (Opmanager) shows clear/online status for one of the MS SQL...
Environment:-Opmanger monitoring server across multiple WAN connections installed on subnet 10.250.1.xx3 x MS SQL Server 2012 Enterprise edition installed on two MS Windows 2012 R2 virtual machines on...
View ArticleNLB Print Server support for Windows Server 2012 R2
Hello, We have a customer who wants to install Print Server in NLB environment because Print Server redundancy is necessary.But we already know that Print Server configuration in NLB is not supported...
View ArticleCluster resource online remotely via power-shall scrip
Hello Guyz, I would like to have a powershall/VBS script which could help me to bring a cluster resource online/offline via remote server. ( Let's say I've a server located on location A and from there...
View ArticleHow long is too long to complete Windows Updates on all cluster nodes?
So I'm confused. All the documentation I've found regarding applying Windows Updates to all Failover Cluster nodes say that all nodes should have the same set of Windows Updates on them. That's fine,...
View ArticleFailover Cluster WMI Provider detected an invalid character
Hi,Another thread on the event log warning 6230: Failover Cluster WMI Provider detected an invalid character."The private property name 'Volume ID' had an invalid character and has been changed to...
View ArticleError trying to validate cluster
Hi, We have two separate production clusters; one of 3 nodes, one with 5. All nodes are running Server 2008 R2 Datacenter SP1. When I try to start the 'Validate This Cluster..." wizard on either I...
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