Azure Interview Questions Part #8

Questions :

Q #1  My version of the Mobility services agent or configuration server is old, and my upgrade failed. What do I do?

Q #2 What does the configuration server do?

Q #3 What does process server do ?

Q #4 Tell few pre-requisite of the Configuration server ?

Q #5 Can a config server replicate to more than one region ?

Q #6 Where can I download the Passphrase for config server ?

Q #7 Where can I download vault registration keys?

Q #8 What access to VMware VMs does Site recovery needs ?

Q #9 Is Replication data sent to the Site Recovery ?

Q #10  Where can I find the Mobility service installers?

Q #11 Where do I set up the configuration server?

Q #12 Can I use the configuration server VM for anything else?




*********************** *****ANSWERS ************************************


Q #1  My version of the Mobility services agent or configuration server is old, and my upgrade failed. What do I do?

Update can be seen in the portal and applied from there . Reboot not needed but recommended.


Q #2 What does the configuration server do?


The server coordinates communications between on-premises components and Azure, and manages data replication.


Q #3 What does process server do ?

Process server acts as a replication gateway
1.      Receives replication data.
2.      Optimizes the data with caching, compression, and encryption.

3.      Sends the data to Azure Storage. The process server also does a push install of the Mobility Service on VMs and performs automatic discovery of on-premises VMware VMs.


Q #4 Tell few pre-requisite of the Configuration server ?


  • CPU -8
  • RAM 16gb
  • Free disk space 600gb for process server cache and additional 600gb for retention disk or fail-back.
  • OS – server 2012 R2 and 2016
  • Static IP
  • Ports 443 and 9443
  • Internet access or no. of urls access
  • MYSQL gets installed


Q #5 Can a config server replicate to more than one region ?

No , to replicate to more than one region you need separate server in each region.


Q #6 Where can I download the Passphrase for config server ?


In the Recovery Services vault, select Configuration Servers in Site Recovery Infrastructure > Manage. Then, in Servers, select Download registration key to download the vault credentials file.


Q #7 Where can I download vault registration keys?


In the Recovery Services vault, select Configuration Servers in Site Recovery Infrastructure > Manage. Then, in Servers, select Download registration key to download the vault credentials file.


Q #8 What access to VMware VMs does Site recovery needs ?


  • To replicate , a VMware VM must have the site recovery Mobility service installed and running.
  • VM’s communicate with config server on HTTPS port 443 for replication management.
  • VM’s send replication data to the process server on HTTPS port 9443 (can be modified)
  • If you enable the multi-VM consistency , VM communicate with each other over port 2004.

Q #9 Is Replication data sent to the Site Recovery ?

No, Site Recovery doesn't intercept replicated data and doesn't have any information about what's running on your VMs. Replication data is exchanged between VMware hypervisors and Azure Storage. Site Recovery has no ability to intercept that data. Only the metadata needed to orchestrate replication and failover is sent to the Site Recovery service


Q #10  Where can I find the Mobility service installers?

The installers are in the %ProgramData%\ASR\home\svsystems\pushinstallsvc\repository folder on the configuration server


Q #11 Where do I set up the configuration server?


You need a single, highly available, on-premises VMware VM for the configuration server. For physical server disaster recovery, install the configuration server on a physical machine.


 

Q #12 Can I use the configuration server VM for anything else?


No. Use the VM only for the configuration server.



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