Reason :

Customer were moving their business to different geographical location and they wanted to setup their core servers into the new location.


Challenge :

The total servers were 50 with 22TB of data, but the bandwidth was very low. Time to complete the migration was 7 days.


Issues :

The bandwidth calculator provided an estimate time to move 22TB of data in 3 months.


Application running on the servers :

MSSQL database, People management application with oracle database and many others.


Solution :

Suggested customer to use OVf Export & import that to the target location and seed the newly created data on the source over the internet.




Server configuration :

Linux based base server with MySql database. While we do the cloud migration from on premises to any cloud, we strongly depend on the technology and so we hit up with their own limitations.

To migrate a server, we collect the source attributes and convert that as a json and push that to Amazon SQS to be consumed by different server and model that as a target VM.


Challenge :

Due to some reason, the json size was exceeding its 256KB limit and so they were not queuing and we were failing to model that as a target VM.


Solution :

Considering the criticality of the server and time frame, we used AWS S3 as a storage solution for that Source attribute JSON and enabled our Migration Engine to get the data from S3 to model a clone of the server into target Cloud.




Reason :

The underlying operating system needed to be upgraded into the higher version and customer wanted to check if those application are compatible with the higher version of operating system.


Challenge :

The applications were hardcoded with an IP address, so the target VM should also remain on the same IP address as the source server.


Solution :

Created a similar network environment with same network CIDR and made that an isolated by restricting any communication to the outside except the 53 for DNS. Created different network with different CIDR for migration which is routable to the source. We have performed the migration successfully and when the migration was completed and we switched the OS to customer source native OS, we pushed that to boot into the isolated network, which prevented the communication of the target VM with the source and avoided the confliction.




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