Update Veeam integration doc with immutability references (#10067)

docs/integrations/veeam/README.md

@@ -11,11 +11,24 @@ __Prerequisites__
 
 ## Setting up an S3 compatible object store for Veeam Backup and Replication
 ### Create a bucket for Veeam backups
-Create a bucket for Veeam Backup, e.g., `mc mb myminio/veeambackup`
+Create a bucket for Veeam Backup, e.g., 
+
+```
+mc mb myminio/veeambackup
+```
+
+> NOTE: For Veeam Backup with Immutability, create the bucket with object lock enabled, e.g., 
+> ```
+> mc mb -l myminio/veeambackup
+> ```.  
+> Object locking requires erasure coding enabled on the minio server. For more information see https://docs.minio.io/docs/minio-erasure-code-quickstart-guide.html. 
 
 ### Add MinIO as an object store for Veeam
 Follow the steps from the Veeam documentation for adding MinIO as an object store - https://helpcenter.veeam.com/docs/backup/vsphere/adding_s3c_object_storage.html?ver=100
 
+For Veeam Backup with Immutability, choose the amount of days you want to make backups immutable for <br />
+![Choose Immutability Days for Object Store](https://raw.githubusercontent.com/minio/minio/master/docs/integrations/veeam/screenshots/object_store_immutable_days.png)
+
 ### Creating the Scale-out Backup Repository
 
 - Under the Backup Infrastructure view, click on Scale-out Repositories and click the Add Scale-out Repository button on the ribbon.
@@ -35,10 +48,13 @@ Follow the steps from the Veeam documentation for adding MinIO as an object stor
 
 - Since we selected Copy mode when creating the SOBR, the backup will be copied to the capacity tier as soon as it is created on the performance tier.
 
+- For Veeam Backup with Immutability, you can choose a number of restore points or days to make backups immutable.
+![Choose Immutability Options for Backups](https://raw.githubusercontent.com/minio/minio/master/docs/integrations/veeam/screenshots/backup_job_immutable_days.png)
+
 #### Backup Office 365 with VBO
 - Create a new bucket for VBO backups
 ```
-mc mb-l myminio/vbo
+mc mb -l myminio/vbo
 ```
 
 - Under Backup Infrastructure, right click on Object Storage Repositories and choose "Add object storage"