Questions and answers

What is MSDTC disk?

by Chase Collins

What is MSDTC disk?

The Microsoft Distributed Transaction Coordinator (MSDTC) service is a component of modern versions of Microsoft Windows that is responsible for coordinating transactions that span multiple resource managers, such as databases, message queues, and file systems.

Is MSDTC required for SQL Cluster?

MSDTC is not required for a SQL Server 2012 fail over cluster. However, if you plan to use Linked Servers, then you will need to create a clustered MSDTC resource. The good news is that can be setup after the cluster is already built and after SQL Server has been installed.

How do I create a MSDTC resource in a cluster 2019?

Right click on services and applications and select Configure a Service or Application.

  1. The High Availability Wizard begins.
  2. Within the list of services and applications select Distributed Transaction Coordinator (DTC) and click Next.
  3. Give the MSDTC resource a name and IP address.

How do I move MSDTC cluster resources?

Right click the drive to which you plan to move the MSDTC, go to more options, and select Move this resource to another service or application. You want to select your MSDTC group. At this point everything is now setup and ready for the move.

How do I get rid of msdtc cluster?

To remove it, go to the Failover Cluster Manager-> Roles tab, find the msdtc role and right-click to remove it.

How do I know if msdtc is running?

Type net start msdtc , and then press the ENTER button. Open the Component Services Microsoft Management Console (MMC) snap-in. To do this, click Start, and then click Run Type dcomcnfg.exe, and then click OK.

How do I create a DTC cluster?

To add DTC as a dependency of the SQL Server resource in Failover Cluster Manager:

  1. Right click on the SQL Server resource and select Properties.
  2. Select the Dependencies tab.
  3. Click Insert.
  4. On the new line, from the dropdown select the DTC resource you created. An example is shown in Figure 14.
  5. Click OK when done.

What is the role of MSDTC in cluster?

MSDTC is a separate Windows service which coordinates distributed transactions across SQL Server instances. When deploying SQL Server in a highly available environment like Windows Failover Clustering, there are certain best practices that can make the MSDTC service’s behavior more predictable.

How do I configure Msdtc?

Configure MSDTC

  1. Open Component Services.
  2. Expand Component Services, expand Computers, expand My Computer, expand Distributed Transaction Coordinator, right-click Local DTC, and select Properties.
  3. Select the Security tab.
  4. Select OK to save your changes.
  5. If prompted to restart the MSDTC service, select Yes.

How do I move Msdtc to a new hard drive?

To move the MSDTC disk to another storage, we need to remove MSDTC from the cluster and then re-add to the cluster. To remove it, go to the Failover Cluster Manager-> Roles tab, find the msdtc role and right-click to remove it.

How do I run msdtc service?

How to create a MSDTC cluster for SQL Server?

You have created a MSDTC resource, Network Name, IP Address resource and a Disk resource set as dependent resources all contained in its own group, which is owned by Node 1. Now in addition you have 1 or more SQL Server installations each in their own group. In this case one of the SQL Failover Cluster Groups is running on Node 2.

How big should a SQL Server Cluster be?

The file allocation unit size (cluster size) recommended for SQL Server is 64 KB; this is reflected in Figure 4. If you decided to test the performance under different cluster sizes, you would probably discover that the difference is negligible, especially on high-end storage systems.

How to choose the right storage size for SQL Server?

Choosing the right storage block size for sql server. The file allocation unit size (cluster size) recommended for SQL Server is 64 KB; this is reflected in Figure 4. If you decided to test the performance under different cluster sizes, you would probably discover that the difference is negligible, especially on high-end storage systems.

How many SQL Server instances are In MSDTC?

To appreciate the impact, say there are four nodes with three SQL Server instances. MSDTC is running on Node 1 and the SQL Server instances are divided on all the nodes (Nodes 2, 3 and 4), they must all talk to Node 1 for MSDTC functionality. This can create a bottleneck.