Author Archives: Cary Sun

About Cary Sun

Cary Sun has a wealth of knowledge and expertise in data center and deployment solutions. As a Principal Consultant, he likely works closely with clients to help them design, implement, and manage their data center infrastructure and deployment strategies. With his background in data center solutions, Cary Sun may have experience in server and storage virtualization, network design and optimization, backup and disaster recovery planning, and security and compliance management. He holds CISCO CERTIFIED INTERNETWORK EXPERT (CCIE No.4531) from 1999. Cary is also a Microsoft Most Valuable Professional (MVP), Microsoft Azure MVP, Veeam Vanguard and Cisco Champion. He is a published author with several titles, including blogs on Checkyourlogs.net, and the author of many books. Cary is a very active blogger at checkyourlogs.net and is permanently available online for questions from the community. His passion for technology is contagious, improving everyone around him at what they do. Blog site: https://www.checkyourlogs.net Web site: https://carysun.com Blog site: https://gooddealmart.com Twitter: @SifuSun in: https://www.linkedin.com/in/sifusun/ Amazon Author: https://Amazon.com/author/carysun

How to Test the Client Access Namespaces for Exchange 2019 Server

Testing the client access namespaces after configuring them ensures clients can connect to the Exchange Server 2019 services without issues.

Restore VM Files at Veeam Backup and Replication v12

You can restore VM files (XML, VMCX, VMRS, VMGS, VHD, VHDX) if they become corrupted. This option is an excellent alternative to restoring the entire VM. You can only restore a single VM file.

How to configure the Client Access Namespaces for Exchange 2019 Server

Configuring the client access namespaces ensures clients can connect to Exchange Server 2019 using the correct URLs for each service. They help to ensure a smooth user experience and avoid issues such as certificate errors and connection failures.

Secure Restore the Entire VM to the New Location at Veeam Backup and Replication v12

Existing jobs do not need to be updated that process the original/recovered VMs if you restore them to the same host and choose to preserve VM UUIDs. If you configure restore differently and want to process the recovered VMs, you must edit existing jobs or create new ones.

How to Configure the Autodiscover Services Connection Point (SCP) for Exchange 2019 Server

The Autodiscover service connection point (SCP) provides information to domain-joined Outlook clients on connecting to the Autodiscover service for automatic client configuration.

100923 0315 Howtorestor12 240x180 - How to restore the Entire VM to the Original Location with Secure Restore at Veeam Backup and Replication v12

How to restore the Entire VM to the Original Location with Secure Restore at Veeam Backup and Replication v12

If the original VM fails, you can use Veeam Backup & Replication to restore an entire VM from a backup file to the most recent state or a previous point.

How to Install SSL Certificate for Exchange Server 2019

We can reuse the existing SSL certificate for the new Exchange 2019 server.

100723 1658 HowtofixVee1 240x157 - How to fix Veeam FLR error -Secondary GPT header LBA 209715199 exceeds the size of the disk (86401630720) at Veeam Backup and replication v12

How to fix Veeam FLR error -Secondary GPT header LBA 209715199 exceeds the size of the disk (86401630720) at Veeam Backup and replication v12

VBR v12 guest file restore—happen error message is as below:
Secondary GPT header LBA 209715199 exceeds the size of the disk (86401630720)
Agent failed to process method {Mount.GenericMount)

How to Install Exchange Server 2019 Mailbox Role server

The Exchange Server 2019 Mailbox role server manages mailbox databases, which store user mailboxes and public folders. It also manages message transport and performs functions like filtering, antivirus and antispam protection, and content indexing.

How to permanent failover of the virtual machine at Veeam Backup and Replication v12

Permanent failover is one method of completing failover. Permanent failover means permanently switching from the original VM to its replica.

How to prepare Active Directory for deployment Exchange Server 2019

Preparing Active Directory for Exchange Server 2019 involves several important steps to ensure your organization’s environment is ready to support Exchange Server.

How to failback to the specified location of the Production Site at Veeam Backup and Replication v12

For the Failback to the specified location, Veeam Backup & Replication must transfer the entire VM data, including its configuration and virtual disc content. Choose this option if you cannot use the original VM or restore it from a backup.

How to upgrade Citrix NetScaler (ADC) to 14.1

Citrix released the new NetScaler 14.1 build version on September 26, 2023.
I will show you how to upgrade the existing Citrix NetScaler to Citrix NetScaler 14.1.

100123 0032 Howtofailba5 240x180 - How to failback to the original virtual machine restored in a different location at Veeam Backup and Replication v12

How to failback to the original virtual machine restored in a different location at Veeam Backup and Replication v12

Because Veeam Backup & Replication only needs to transfer differences between the original/recovered VM and VM replica, the failback to the original virtual machine restored in a different location option helps reduce recovery time and network traffic.

How to upgrade to Citrix Virtual Apps 7 2308

Citrix released Virtual Apps 7 2308 on September 14,2023.
I will show you how to upgrade the existing Citrix Virtual Apps servers to Citrix Virtual Apps 7 2308.

How to failback to the original virtual machine of the Production Site at Veeam Backup and Replication v12

Failback is returning operations to the primary site after a disaster recovery event. It reverses the failover process by replicating any changes made to the virtual machine during the Failover state back to the primary site and then redirecting users and applications back to the primary site.

How to Migrate Microsoft Entra Connect (Azure AD Connect) to v2

Today, I will show you how to migrate Microsoft Entra Connect (Azure AD Connect) to v2.

How to Plan Failover virtual machine to Disaster Recover Site at Veeam Backup and Replication v12

Planned failover is the smooth manual switching from a primary VM to its replica with minor downtime. Planned failover is proper when you know primary VMs are planning to go offline, and you need to switch the workload from the original VMs to their replicas as soon as possible. For example, you can use planned failover to perform data center migration, maintenance, or software upgrades on primary VMs. You can also perform planned failover if you see signs of an impending disaster.

How to fix installing Microsoft Entra Connect V2 (Azure AD Connect V2) error code 2503, 2502

When you try to install the Microsoft Entra Connect V2 (Azure AD Connect V2) and it happens the installer has encountered an unexpected error installing this package. The error code is 2503 and 2502.

How to undo failover the virtual machine to Production Site at Veeam Backup and Replication v12

One method for completing failover is to use failover undo. When you undo failover, you return to the original VM from a VM replica. When a virtual machine replica is in the Failover state, Veeam Backup & Replication discards all changes made to the replica. This is because the Failover state is intended to be a temporary state used to restore the virtual machine to operation quickly in the event of a disaster.