VMCE Repository and Storage Management Questions and Answers — Questions and Answers
Question 1: A backup job uses the forward incremental method with periodic active fulls. Over time, VMs have been removed from the job. An administrator notices that the active full backup file (VBK) on the repository is not shrinking in size, even though it now contains fewer VMs. What repository maintenance task should be performed to reclaim this unused space within the VBK file?
- Run the "Compact full backup file" task. (Correct answer)
- Perform a repository rescan.
- Run a health check on the backup job.
- Edit the repository and reduce its capacity.
Correct answer: Run the "Compact full backup file" task.
The "Compact full backup file" task is specifically designed to reclaim unused space within a VBK file. When VMs are removed from a job, their data blocks become obsolete but remain within the file. Compacting creates a new, smaller VBK file by copying only the data blocks belonging to the VMs that are still in the job, effectively removing the 'white space' left by the deleted VMs.
Question 2: Which of the following is a primary advantage of enabling the "Use per-VM backup files" option on a backup repository?
- It reduces the CPU load on the source ESXi hosts during backup.
- It improves performance and scalability, especially for Scale-out Backup Repositories and deduplication appliances. (Correct answer)
- It guarantees a higher data deduplication ratio across all VMs in a job.
- It is required to enable application-aware processing for any VM in the backup job.
Correct answer: It improves performance and scalability, especially for Scale-out Backup Repositories and deduplication appliances.
Enabling "Use per-VM backup files" creates a separate backup chain for each virtual machine. This allows for multiple write streams to the repository, which can significantly improve performance and scalability, especially when targeting Scale-out Backup Repositories or certain deduplication appliances that benefit from multiple concurrent streams. While it may slightly reduce the cross-VM deduplication ratio, the performance gains are often a more critical advantage.
Question 3: An administrator needs to add an SMB (CIFS) share located in a remote office as a backup repository. The Veeam Backup & Replication server is in the main datacenter, and the WAN link between the sites has high latency. To optimize data transfer and processing, what component should be deployed in the remote office?
- A dedicated Mount Server.
- A Veeam Backup & Replication console.
- A Gateway Server. (Correct answer)
- A Veeam Cloud Connect server.
Correct answer: A Gateway Server.
For repository types that cannot host the Veeam Data Mover service themselves, like an SMB share, a Gateway Server is required. In a remote office scenario with a high-latency WAN link, deploying a Gateway Server (typically on a Veeam proxy) in the remote office, close to the SMB share, is critical. This ensures that data-intensive operations like synthetic full creation and data transformation happen locally at the remote site, preventing excessive traffic over the WAN.
Question 4: An administrator is configuring a Linux Hardened Repository to protect backups from ransomware. To ensure immutability, which of the following is a critical requirement for the user account that Veeam uses to connect to the Linux server?
- The user account must be a member of the 'root' or 'wheel' group.
- The user account must be configured with non-interactive, key-based SSH authentication.
- The user account credentials must be permanently stored in the Veeam Backup & Replication server's credential manager.
- The user account must be a non-root account with single-use credentials for initial deployment. (Correct answer)
Correct answer: The user account must be a non-root account with single-use credentials for initial deployment.
A core security principle of the Veeam Hardened Repository is the use of single-use credentials for a non-root user. These credentials are used only for the initial deployment of Veeam services on the Linux server. After deployment, the credentials are not stored by Veeam, and ongoing communication uses a certificate-based method. This prevents the Veeam server, if compromised, from having persistent credentials that could be used to access and compromise the repository.
Question 5: A small office uses multiple external USB drives that are swapped weekly for off-site storage. To manage this, the administrator has configured a single backup repository with the "This repository is backed by rotated hard drives" option enabled. What is a key behavior of a backup job targeting this type of repository?
- The job will automatically format each newly connected drive.
- The job will create a synthetic full backup every time a new drive is detected.
- The job will create a new active full backup on each new drive to start a new chain.
- Veeam will track which files are on which drive and will only display restore points from the currently connected drive. (Correct answer)
Correct answer: Veeam will track which files are on which drive and will only display restore points from the currently connected drive.
When a repository is configured for rotated drives, Veeam maintains a catalog of which backup files reside on which specific drive. When a drive is connected, Veeam scans it and updates its database. In the console, it will only show the restore points that are available on the currently connected drive, preventing job failures or confusion that would arise from trying to access files on a disconnected drive.
Question 6: An administrator has configured a Scale-Out Backup Repository (SOBR) with a Performance Tier and a Capacity Tier using the 'Move' policy. After a backup chain's operational restore window expires, its data blocks are moved to the Capacity Tier. What happens to the corresponding VBK (full backup) file on the Performance Tier?
- The VBK file is copied to the Capacity Tier and then deleted from the Performance Tier.
- The VBK file remains on the Performance Tier, consuming its original full size.
- The VBK file is transformed into a 'shell' file containing only metadata and pointers to the data blocks in the Capacity Tier. (Correct answer)
- The VBK file is encrypted on the Performance Tier and marked as 'Archived'.
Correct answer: The VBK file is transformed into a 'shell' file containing only metadata and pointers to the data blocks in the Capacity Tier.
When the 'Move' policy offloads an inactive backup chain to the Capacity Tier, Veeam optimizes storage on the Performance Tier. The data blocks from the VBK and VIB files are moved to object storage. The files on the Performance Tier, including the VBK, are then transformed into metadata-only 'shell' files. These shell files are very small and act as pointers, allowing Veeam to maintain the backup chain's structure and transparently retrieve data from the Capacity Tier during a restore.
VMCE Repository and Storage Management Questions and Answers
A backup job uses the forward incremental method with periodic active fulls.
Over time, VMs have been removed from the job.
An administrator notices that the active full backup file (VBK) on the repository is not shrinking in size, even though it now contains fewer VMs.
What repository maintenance task should be performed to reclaim this unused space within the VBK file?