The document provides instructions for setting up database mirroring between two SQL Server instances (HOST_A and HOST_B). It involves: 1. Creating certificates and endpoints on each server for authentication and encryption of the database mirroring connection. 2. Backing up the certificate from HOST_A and importing it into HOST_B to trust the connection. 3. Configuring HOST_A to allow inbound connections from HOST_B by creating a login, user, and associating the certificate.

1. Database SQL Mirroring
1. On the master database , create the database key if needed.
use master
create master key ENCRYPTION by PASSWORD='Motorola1';
GO
2. Make a certificate for this server instance
use master;
create certificate HOST_A_CERT with subject ='HOST_A Certificate'
GO
3.create a mirroring end point for server instance using the certificate:
create endpoint endpoint_mirroring
create ENDPOINT Endpoint_Mirroring STATE=STARTED AS TCP(LISTENER_PORT=7024,
LISTENER_IP=ALL)
FOR DATABASE_MIRRORING(AUTHENTICATION=CERTIFICATE HOST_A_CERT,ENCRYPTION=REQUIRED
ALGORITHM AES,ROLE=ALL);
4.Backup the HOST_A certificate and copy it to other system HOST-B
BACKUP CERTIFICATE HOST_A_CERT TO FILE='C:backupHOST_A_CERT.cer'
Inbound connections:
To configure HOST_A for inbond connections:
1. create login on HOST-A for HOST-B
use master;
create login HOST_B_LOGIN with PASSWORD = 'Motorola1'
2. Create a user for that login

2. create user HOST_B_USER FOR LOGIN HOST_B_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_B_CERT AUTHORIZATION HOST_B_USER FROM FILE =
'C:backupHOST_B_CERT.cer'
4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_B_LOGIN];
GO
use master;
create login HOST_E_LOGIN with PASSWORD = 'Motorola1'
create user HOST_E_USER FOR LOGIN HOST_E_LOGIN;
GO
create CERTIFICATE HOST_E_CERT AUTHORIZATION HOST_E_USER FROM FILE =
'C:backupHOST_E_CERT.cer'
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_E_LOGIN];
GO