Risk and Countermeasures of data center migration

Risk one: service availability
The main purpose of a data center migration is to host an application that provides services for a business. Whenever you consider migrating from one data center to another, you must first consider the availability of the underlying service. These services include infrastructure applications such as active catalogs and customer - oriented applications such as SAP.

When service is transferred from one data center to another, you must make a strategy that when the specific service is migrated and the dependencies between applications on each other must be considered. One common way to ensure service availability is to establish a migration group and then divide the interdependent applications into the same group.
As for services that support most enterprise applications, such as active directories and DNS, one common practice is to extend these core services across the data center. The service is still in the data center on both sides until the migration is completed.
Risk two: data migration
The application data move from one place to another place may be one of the most complex part of the data center migration project, a simple solution is to perform tape or hard disk based backup and recovery, execution, but similar to translation migration, backup and restore the ability to provide timely service in the recovery area is limited. In addition, backup and recovery are not the ideal way for data migration -- it is more suitable for a scenario where the data recovery scheme is limited to disaster recovery.
The main way to select most of the data migration is to configure a rented line. If there is a dedicated connection between the two data centers, the migration team will be able to make full use of the synchronization mechanism based on hardware or software to perform data migration. In addition to the ability to migrate data, this method can also be used to perform P2P migration, P2V migration, and virtual machine to virtual machine (V2V) migration.
Many enterprises decide to have multiple connections between two data centers. Connect at least two lines: one path is connected with the end user support and data center normal traffic to the data center, in order to support the active directory application and application to application traffic; Second Road, often faster connection to perform data synchronization. A two - way connection prevents two completely different traffic disturbances or affects each other.
Risk three: Hardware migration
There are usually two strategies for migrating physical servers: one is lift and shift, the other is data replication. In translation strategy, hardware is put on the active truck and installed in the new data center. The system has been backed up before moving to the new site, but this strategy brings some risks.
One of the biggest risks is that the physical server may be damaged during the handling process, and the damage in the handling process can cause the backup to be useless. Another challenge is that two data centers are too far apart, so this method is unrealistic and can not ensure that the service is available in an acceptable period of time.
The second strategy is to transfer data through a rented line. Rented lines bring two sub-swing hardware schemes. One solution is to execute the physical machine to the physical machine (P2P) migration. P2P migration requires the purchase of similar hardware so that the application and hardware of the original data center can be migrated to the past and ensure that the downtime is the shortest.
Another hardware migration scheme is a physical machine to a virtual machine (P2V) transformation. P2V needs to convert the physical machine into a virtual machine by leased lines.
P2V aims to achieve two goals:
The first goal is to move the workload from one data center to another, and to ensure that the hardware costs are the lowest.
The second goal is to transform the data center by transferring to the virtual platform.  P2V migration is a popular scheme because many engineers have been used to performing this transformation, which is part of the previous data center project.
Summary:
The data center migration to IDC may be crucial for the business, think twice, the main factors, we must consider the above considerations and risk, remember that all hosting providers are not the same, the more you can choose the best hosting provider, get more and more value the peace of mind from migration.