Understanding Commvault

Commvault is a comprehensive data management and protection platform that enables organizations to backup, recover, archive, replicate, and secure their critical data across on-premises, cloud, and hybrid environments. Designed for enterprises, Commvault provides a single, unified solution for managing data across multiple platforms, applications, and endpoints.

As businesses generate increasing volumes of data, Commvault helps organizations ensure data availability, compliance, and security, making it a critical tool in enterprise IT infrastructure.

History and Evolution of Commvault

Commvault Systems, Inc. was founded in 1988 by Bob Hammer in Tinton Falls, New Jersey, USA. Initially, the company focused on providing backup solutions for enterprise systems. Over the years, Commvault evolved into a complete data management platform, extending its offerings to cloud data management, disaster recovery, and data governance.

Key milestones:

• 1988: Company founded; early products focused on tape backup solutions.

• 1996-2000: Expanded support for multiple operating systems and enterprise applications.

• 2008: Launch of Commvault Simpana, a unified data protection and management platform.

• 2019-Present: Rebranded product portfolio as Commvault Complete Backup & Recovery and expanded into cloud-native data management.

Today, Commvault serves thousands of organizations globally, including banks, healthcare providers, government agencies, and large enterprises, making it a leader in data protection and management.

What is Commvault?

Commvault is a data management software platform that provides end-to-end solutions for protecting, accessing, and managing enterprise data. It addresses critical challenges such as:

• Data Loss Prevention: Ensuring business continuity through backups and disaster recovery.

• Data Compliance: Meeting regulatory requirements with secure retention and archiving.

• Cloud Adoption: Managing data across public, private, and hybrid clouds.

• Data Analytics: Leveraging stored data for insights without affecting operational workloads.

Unlike standalone backup solutions, Commvault offers a unified approach to data management, covering backup, recovery, replication, archiving, disaster recovery, cloud integration, and security under a single platform.

Features of Commvault

Commvault provides a rich set of features that address the needs of modern enterprises:

1. Data Backup and Recovery

• Incremental and full backups for physical, virtual, and cloud environments.

• Application-aware backup for Microsoft Exchange, SQL Server, Oracle, SharePoint, and more.

• Granular recovery of files, folders, emails, and databases.

2. Disaster Recovery

• Automated disaster recovery plans for rapid failover.

• Replication of critical workloads to on-premises or cloud-based disaster recovery sites.

• Minimizes downtime and ensures business continuity.

3. Cloud Data Management

• Supports AWS, Microsoft Azure, Google Cloud, and hybrid cloud environments.

• Cloud-native backup and recovery for SaaS applications like Microsoft 365, Salesforce, and Google Workspace.

• Enables cost-effective cloud storage tiering and archiving.

4. Data Archiving and Retention

• Long-term storage for compliance and regulatory requirements.

• Automated archiving from endpoints, file systems, and applications.

• Reduces storage costs while maintaining accessibility.

5. Security and Ransomware Protection

• End-to-end encryption for data in transit and at rest.

• Immutable storage options to prevent ransomware attacks.

• Role-based access controls and audit trails for enhanced compliance.

6. Monitoring and Analytics

• Centralized management console for monitoring backups, storage usage, and recovery performance.

• Data insights and reporting to optimize storage and operational efficiency.

• Predictive analytics for capacity planning and performance optimization.

7. Endpoint Protection

• Backup and recovery for laptops, desktops, and remote endpoints.

• Integration with mobile devices for secure data protection.

• Ensures consistent protection across geographically dispersed teams.

Commvault Architecture

Commvault follows a modular and scalable architecture, designed for flexibility and enterprise-grade performance:

1. CommServe

• The central management component.

• Orchestrates backup jobs, policies, and reporting.

• Stores metadata about backup and recovery operations.

2. MediaAgent

• Handles data movement between sources and storage targets.

• Supports disk, tape, cloud, and hybrid storage.

• Performs deduplication and compression for efficient storage usage.

3. Clients/Agents

• Installed on servers, applications, or endpoints to capture and transmit data.

• Application-specific agents ensure consistent and optimized backups.

4. Storage Targets

• Supports disk storage, tape libraries, cloud storage, and deduplication appliances.

• Enables tiered storage strategies to optimize costs and performance.

5. Web Console / Command Center

• Provides a single interface for management, monitoring, reporting, and configuration.

• Role-based access allows IT teams to manage data across multiple sites.

Advantages of Commvault

1. Unified Platform: Combines backup, recovery, archiving, and cloud management in one solution.

2. Scalable: Supports small businesses to enterprise-scale deployments with petabytes of data.

3. Application-Aware: Optimized for databases, virtual machines, SaaS applications, and endpoints.

4. Cloud Integration: Seamless backup and recovery across private, public, and hybrid clouds.

5. Ransomware Protection: Immutable storage and security features enhance resilience.

6. Centralized Management: Provides IT teams with comprehensive visibility and control.

7. Automation: Reduces administrative overhead with policy-driven workflows.

Disadvantages of Commvault

1. Complex Deployment: Initial setup may require experienced administrators.

2. Cost: Licensing and maintenance fees can be high for large-scale deployments.

3. Learning Curve: Extensive features require training and experience to manage effectively.

4. Resource Intensive: Can consume significant network and storage resources during large backups.

Use Cases of Commvault

1. Enterprise Data Backup

• Banks and financial institutions rely on Commvault for highly reliable backups of databases and financial transactions.

2. Disaster Recovery Planning

• Healthcare providers use Commvault to ensure minimal downtime during outages and maintain access to critical patient records.

3. Cloud Migration

• Organizations migrating workloads to the cloud leverage Commvault for data migration, backup, and hybrid management.

4. Compliance and Archiving

• Legal firms and regulated industries use Commvault for long-term data retention, auditing, and compliance reporting.

5. Endpoint Protection

• Global organizations protect remote and mobile workforces by backing up endpoints and laptops.

Modern Trends and Innovations

1. AI-Powered Data Management: Predictive analytics for storage optimization and backup scheduling.

2. Cloud-Native Backup: Direct integration with AWS, Azure, Google Cloud, and SaaS applications.

3. Ransomware Resilience: Immutable storage, rapid recovery, and threat detection.

4. Automation and Orchestration: Policy-driven workflows reduce manual intervention.

5. Data Insights: Analytics dashboards for storage utilization, compliance, and risk management.

Conclusion

Commvault is a leading enterprise-grade data management platform that goes beyond traditional backup solutions. By providing comprehensive backup, recovery, archiving, and cloud integration, Commvault ensures data availability, compliance, and security across diverse IT environments.

Its scalable architecture, modular design, and application-aware protection make it ideal for modern enterprises facing complex data challenges. While deployment and management require expertise, the platform’s robust features, automation, and analytics capabilities deliver significant value in terms of data resilience, operational efficiency, and business continuity.

In a world where data is the backbone of business operations, Commvault provides the tools and confidence organizations need to protect, manage, and extract value from their critical data assets.

1. Basics of Commvault

Q1. What is Commvault?
Answer:
"Commvault is an enterprise backup, recovery, and data management software used to protect, manage, and recover data across physical, virtual, and cloud environments. It offers backup, archiving, disaster recovery, and storage management solutions."

Q2. What are the main components of Commvault?

• CommCell Console: GUI for managing all operations

• CommServe: Central server that manages jobs, policies, and metadata

• MediaAgent: Manages data transfer to storage

• Client/Agents: Installed on systems to be backed up

• Storage Devices: Disk, tape, or cloud storage for backup data

Q3. What are the key features of Commvault?

• Backup and restore for multiple platforms

• Deduplication and compression

• Snapshot management

• Cloud integration (AWS, Azure, GCP)

• Disaster recovery and replication

• Reporting and monitoring

Q4. What is CommServe?
"CommServe is the central management component that coordinates backup, recovery, and reporting. It stores metadata about jobs, clients, and storage locations."

Q5. What is a MediaAgent in Commvault?
"A MediaAgent manages the actual data movement between the client and storage devices. It reads and writes backup data to disk, tape, or cloud storage."

Q6. What is a client/agent in Commvault?
"A client is the system (server, workstation, VM, database) from which data is backed up. An agent is software installed on the client to perform backup and restore operations."

Q7. What is CommCell Console?
"CommCell Console is a GUI used by administrators to manage backup jobs, view reports, configure clients, storage policies, and monitor job status."

Q8. What is a Storage Policy?
"A storage policy defines how and where backup data will be stored. It includes primary storage, secondary storage, copy rules, and retention policies."

Q9. What is a Subclient in Commvault?
"A subclient defines a portion of data from a client that needs to be backed up separately. It allows granular control over backup and restore operations."

Q10. What is the difference between Client, Subclient, and Storage Policy?

2. Backup Concepts

Q11. What are different types of backups in Commvault?

• Full Backup: Complete copy of data

• Incremental Backup: Only changes since last backup (full or incremental)

• Differential Backup: Changes since last full backup

• Synthetic Full Backup: Combines previous backups to create a new full backup without reading client data

Q12. Difference between Incremental and Differential Backup

Q13. What is Synthetic Full Backup?
"A Synthetic Full Backup creates a full backup from previous full and incremental backups on the MediaAgent, reducing load on the client."

Q14. What is deduplication in Commvault?
"Deduplication is the process of removing duplicate data blocks before storing backups, reducing storage requirements."

Q15. What is compression in Commvault?
"Compression reduces the size of backup data during transfer or storage to save bandwidth and storage space."

Q16. What is snapshot backup?
"Snapshot backup is an instantaneous copy of data at a point in time, often used for databases or virtual machines."

Q17. Difference between snapshot backup and traditional backup

Q18. What is continuous data protection (CDP)?
"CDP captures every change in real-time and allows recovery to any point in time, minimizing data loss."

Q19. What is disaster recovery in Commvault?
"Disaster recovery ensures data availability during system failures or disasters using backup, replication, or snapshots to restore operations quickly."

Q20. Difference between backup and replication

3. Storage and Media Management

Q21. What are storage devices in Commvault?

• Disk libraries

• Tape libraries

• Cloud storage (AWS S3, Azure Blob)

• Deduplication storage

Q22. What is a library and media in Commvault?

• Library: Logical container of tapes/disks

• Media: Physical tape or disk unit used for storing backup data

Q23. What is a drive in Commvault?
"A drive is a physical or virtual device that reads/writes data to/from media."

Q24. What is a library path?
"A library path is a specific storage location within a library assigned for storing backup data."

Q25. Difference between primary and secondary storage

Q26. What is a storage policy copy?
"A copy defines how backup data is replicated from primary storage to secondary storage for redundancy or DR."

Q27. What is retention in Commvault?
"Retention defines how long backup data is kept before deletion. Can be set per subclient or storage policy."

Q28. Difference between GFS and simple retention

• GFS (Grandfather-Father-Son): Keeps daily, weekly, monthly backups for long-term retention

• Simple: Keeps backups for a fixed duration

4. Jobs and Monitoring

Q29. What is a backup job in Commvault?
"A backup job is a process that transfers data from a client/subclient to the designated storage according to the storage policy."

Q30. What is a restore job in Commvault?
"A restore job retrieves backup data from storage and restores it to the original or alternate location."

Q31. How to monitor Commvault jobs?

• Use CommCell Console → Job Controller

• Check job status: Success, Warning, Failure

• Job history provides details about duration, size, and errors

Q32. Difference between online and offline backups

Q33. What is deduplication ratio?
"Deduplication ratio = Original data size / Deduplicated data size. Indicates storage savings achieved."

Q34. What is a MediaAgent cache?
"MediaAgent cache temporarily stores data blocks during backup before writing to storage, improving performance."

Q35. Difference between synchronous and asynchronous replication

5. Security and Access

Q36. How is security managed in Commvault?

• User roles and permissions

• Encryption of data at rest and in transit

• Secure communication (SSL/TLS)

• Audit logs for tracking access

Q37. What is data encryption in Commvault?
"Data encryption protects backup data using algorithms like AES during transfer or storage, preventing unauthorized access."

Q38. What is role-based access in Commvault?
"Admins can assign roles like Backup Operator, Restore Operator, or Admin to control user permissions."

Q39. What is multi-tenancy in Commvault?
"Multi-tenancy allows managing multiple clients, locations, or organizations under a single CommCell while keeping data isolated."

Q40. How to handle failed backup jobs?

• Check job logs for errors

• Verify client connectivity

• Ensure MediaAgent is healthy

• Check storage availability and permissions

• Re-run the job if required

Q41. Difference between full and incremental synthetic full backup

Q42. What are alerts in Commvault?
"Alerts notify admins about job failures, warnings, storage issues, or hardware errors, and can be configured via email or dashboard."

Q43. What is CommServe database?
"CommServe database stores all metadata about clients, jobs, storage policies, schedules, and configuration settings."

Q44. What is a schedule in Commvault?
"Schedules define when backup jobs, snapshots, or replication tasks will run automatically."

Q45. What is a disaster recovery plan in Commvault?
"A DR plan defines backup, replication, and restore strategies to recover data and systems quickly after a disaster."

Q46. Difference between hot, warm, and cold backups

Q47. What is a Virtual Server Backup in Commvault?
"Virtual server backups protect VMware or Hyper-V VMs using agentless or agent-based methods with snapshot integration."

Q48. How does Commvault integrate with cloud?

• Cloud storage as primary/secondary copy

• Backup to AWS, Azure, GCP

• DR using cloud replication

• Archiving old data to cloud

Q49. What is deduplication storage pool?
"A deduplication storage pool groups storage devices that support deduplication to save space across multiple backups."

Q50. Best practices for Commvault administration

• Regularly monitor jobs and storage

• Keep software up-to-date

• Use storage policies with proper retention

• Implement security and encryption

• Test restore and DR processes periodically

✅ 1. What is Commvault and what are its primary components?

Answer:
Commvault is an enterprise‑grade data protection and information management platform. It provides backup, recovery, replication, deduplication, archive, and disaster recovery across physical, virtual, and cloud environments.

Key components:

• CommServe – Central management server that orchestrates jobs, policies, metadata, reporting.

• MediaAgent – Handles data movement between clients and storage.

• Clients – Systems/agents installed on servers, databases, VMs to protect data.

• Storage Policies – Define how and where backup data is stored (disk-library, tape).

• Subclients – Logical grouping of data within a client for backup operations.

• Libraries – Disk or tape storage repositories used by MediaAgents.

✅ 2. How does a Commvault storage policy work?

Answer:
A Storage Policy defines how data is stored and managed in Commvault.

Components:

• Copy Groups: Logical groups containing data copies.

• Data Storage: Destination where data is written (disk/tape/cloud).

• Retention Rules: Specify how long backups are kept.

• Advanced Policies: Duplicate copies, snapshot policies, encryption/compression settings.

Example:
Policy SP_Linux_Backup:

• Copy 1 → Disk Library → Daily incremental w/ 30 days retention

• Copy 2 → Tape → Weekly full backup w/ 1 year retention

✅ 3. What is a Subclient and why is it critical?

Answer:
A Subclient is a subset of data that defines what data will be backed up for a specific workload. It is part of a Client computer but controls:

• Content to back up (file system, database, application instances)

• Backup schedule

• Associated storage policy

Strong subclient design directly impacts backup performance and recovery granularity.

✅ 4. What are the types of backup copies supported by Commvault?

Answer:

• Full Copy: Complete backup of selected data.

• Incremental: Backs up only changed blocks/files since the last backup.

• Differential: (Depending on platform) captures changes since last Full.

• Synthetic Full: Constructed Full using previous full + incremental data.

• Incremental Forever: Only incremental backups sent with periodic synthetic full.

• Snapshot copy: Offloaded CIT backups from storage arrays.

✅ 5. Explain deduplication in Commvault.

Answer:
Commvault performs global deduplication on block level:

• Eliminates redundant data blocks before writing to disk/tape.

• Reduces storage footprint and network usage.

• Inline dedupe: Happens during data transfer.

Deduplication is set at the Storage Policy Copy level.

✅ 6. What is the role of the Commvault CommServe database?

Answer:
CommServe database (usually SQL Server):

• Stores metadata, job history, index info, event logs, configuration

• Authoritative source for job coordination

• Backup of CommServe database is critical — if it’s lost, you may lose management state.

Best practice: Take isolated backups of CommServe DB and retain them securely.

✅ 7. How would you recover a failed CommServe?

Answer:
Recovery steps:

1. Stop all services.

2. Restore CommServe database from the last known good backup.

3. Restore CommServe configuration (optional media servers config).

4. Restart CommServe services.

5. Reconnect MediaAgents and clients.

Always have a standalone CommServe backup strategy (off‑site, off‑product).

✅ 8. What is Global Deduplication Index (GDI)?

Answer:
GDI stores hash signatures for dedupe blocks across clients and storage.
It enables:

• Block lookup

• Redundant suppression

• Faster restores

Losing GDI may result in inability to perform granular dedupe restores or space reclamation.

✅ 9. What are iDataAgents and how do they differ?

Answer:
iDataAgents are specialized protection agents for specific workloads:

• File System Agent

• VMware/Hyper‑V Agent

• SQL Agent

• Oracle Agent

• Exchange/SharePoint Agent

• NDMP

• ...and many more.

They understand how to quiesce, extract, and protect data from specific environments.

✅ 10. How does Commvault back up VMware?

Answer:
Using VMware DataAgent, Commvault:

• Integrates with vCenter.

• Performs image‑level backup of VMs.

• Supports:

  • CBT (Changed Block Tracking)

  • Instant VM recovery

  • Granular file‑level restore (GRT)

  • Snapshot consolidation

Backup flow:
VM → vStorage API → MediaAgent → Storage → CommServe.

✅ 11. What is GRT (Granular Restore Technology)?

Answer:
GRT lets you recover individual objects (files/emails/db rows) from a single backup operation like VM/Exchange/SharePoint, without a separate application‑level backup.

For example:

• Restore a single Exchange mailbox from a VM image backup.

• Restore specific SQL rows from a database backup.

✅ 12. What is synthetic full backup?

Answer:
A Synthetic Full is created on the MediaAgent combining previous full and incremental jobs without reading data again from clients.

Benefits:

• Reduces load on production systems.

• Faster backups over WAN.

• Storage optimized.

✅ 13. What are the different restore types in Commvault?

Answer:

• Full restore

• Incremental restore

• Point‑in‑time restore

• Granular item restore

• Restore to alternate location

• Instant Recovery (e.g., Instant VM Restore)

• Redirect Restore with Rewrite

✅ 14. How would you monitor backup job performance?

Answer:
Use:

• CommCell Console > Jobs

• Event Viewer / Alerts

• Reports / Dashboards
  Key metrics:

• Job duration

• Data read/write throughput

• Deduplication rates

• Failed vs successful jobs

✅ 15. How does Commvault handle retention?

Answer:
Retention is defined in the Storage Policy Copy:

• Short‑Term Retention (daily/weekly)

• Long‑Term Retention (monthly/yearly)

• Expiration rules purge expired data automatically.
  Retention ensures compliance and storage hygiene.

✅ 16. What is a MediaAgent and what are its roles?

Answer:
A MediaAgent:

• Facilitates data movement

• Handles storage interactions (disk/tape)

• Hosts deduplication database and indexing

• Runs device drivers for tape libraries

A properly scaled MediaAgent improves throughput and parallelism.

✅ 17. DVR vs Open File Backup

Answer:

• DVR (Distributed Volume Manager): Volume snapshots for consistent backup.

• Open file agent/backup: Uses VSS (Windows) or similar to capture open files.

Snapshot backups reduce production impact and ensure consistency.

✅ 18. How do you configure Commvault to back up SQL Server?

Answer:

1. Install SQL iDataAgent on SQL server.

2. Register in CommCell.

3. Define subclients to include databases.

4. Set backup schedule.

5. Choose dump type (Full/Log/Incremental).

6. Enable GRT for table‑level restore.

✅ 19. What is the difference between backup and snapshot?

Answer:

• Backup: Data copied to another target with retention and cataloging.

• Snapshot: Point‑in‑time view of data on the same storage platform.
  Commvault integrates with storage arrays (NetApp, EMC, etc.) to manage snapshots for fast recovery and replication.

✅ 20. What are CommVault Alerts and Event Management?

Answer:
Alerts are generated on job failures, thresholds, errors, or warning conditions. Commvault can:

• Send email alerts

• Trigger scripts

• Log events

• Integrate with SIEM

Effective alerting helps in proactive issue resolution.

✅ 21. How do you scale Commvault in large environments?

Answer:

• Multiple MediaAgents distributed by region/workload.

• CommServe clustering (DR architecture).

• Group policies per business unit.

• Use VPN/WAN optimizations.

• Separate storage policies for performance.

✅ 22. How do you secure Commvault infrastructure?

Answer:

• RBAC (Role‑Based Access Control)

• Secure communication with SSL/TLS

• Least privilege for service accounts

• Encrypt data at rest (AES‑256)

• Authenticate with Active Directory

Security of backup data is critical to prevent data loss or ransomware spread.

✅ 23. What is Commvault Disaster Recovery (DR) process?

Answer:
DR involves:

• Replicating CommServe database to standby location.

• MediaAgent replicas.

• Storage policy copies across sites.

• Failover plan to recover CommServe and MediaAgents at DR site.

Testing DR plans regularly ensures readiness.

✅ 24. What does “redirect restore” mean in Commvault?

Answer:
Restore data to a different location or client than original. Useful when original server is decommissioned, corrupted, or inaccessible.

✅ 25. How do you handle failed backup jobs?

Answer:

1. Check Job Details and Messages

2. Identify root cause (permissions, network, resource)

3. Check CommServe & MediaAgent logs

4. Re‑run the job or run a forced incremental

5. Fix underlying issues and monitor

✅ 26. Checkpoint Restart in Commvault

Answer:
Large backups can be resumed from the last checkpoint if interrupted, avoiding restart from beginning.

✅ 27. What is the difference between Synthetic Full and Auto‑Synthetic Full?

Answer:

• Synthetic Full: Triggered manually.

• Auto‑Synthetic: Scheduler automatically creates full backups from previous data.

✅ 28. How does Commvault handle cloud backups?

Answer:
Backup to cloud targets (Azure, AWS, GCP):

• Cloud Connectors

• Scale‑out storage

• Tier older data to cloud for lifecycle management

Cloud backups help in compliance and off‑site retention.

✅ 29. What are Jobs Types in Commvault?

Answer:

• Backup

• Restore

• Copy

• Synthetic Full

• GRT Indexing

• Verification

• Snapshot

• Dedup Sync

✅ 30. How does indexing work in Commvault?

Answer:
Commvault builds an index of backed‑up data (files, emails, database objects) stored in MediaAgents. This enables fast search and granular restores.

✅ 31. What is Single Instancing?

Answer:
It eliminates duplicate storage of identical data blocks across clients, optimizing storage usage.

✅ 32. Difference between SMART and Non‑SMART backups?

Answer:
SMART: Scale‑out MediaAgents and multipath optimized backups
Non‑SMART: Legacy mode

SMART improves backup throughput and resiliency.

✅ 33. How does Commvault licensing work?

Answer:
Licensing is module‑based and can be:

• Capacity based

• Instance based

• Enterprise Agreements

Modules include VM backups, DB backups, archive, security, etc.

✅ 34. What are some best practices for Commvault backup design?

Answer:

• Separate MediaAgents by region/workload

• Define clear retention per BU

• Use dedupe globally

• Monitor resources and jobs

• Maintain CommServe backups off‑site

• Test restores quarterly

✅ 35. What is a Drive Pool?

Answer:
Drive pool groups multiple physical drives into a single logical pool for more reliable tape handling and workload distribution.

✅ 36. How do you upgrade Commvault?

Answer:

1. Take CommServe backup

2. Review release notes

3. Upgrade CommServe

4. Upgrade MediaAgents

5. Upgrade clients

6. Validate jobs

Always plan upgrade windows with rollback plans.

✅ 37. What are Commvault Reports?

Answer:
Built‑in or custom reports for:

• Capacity usage

• Job history

• SLA compliancy

• License usage
  Reports help in compliance and capacity planning.

✅ 38. How do you handle Tape Library errors?

Answer:

• Check library connections

• Validate drives and robotics

• Clean tape drives

• Check MediaAgent logs

• Rerun job or rescan library

Physical hardware issues are common root causes.

✅ 39. Explain Commvault encryption.

Answer:

• In‑flight encryption (TLS)

• At‑rest encryption (AES 256)

• Encryption keys need backup and secure storage
  Encryption protects against data theft.

✅ 40. How do you optimize backup windows?

Answer:

• Use incremental forever

• Deduplication and compression

• Off‑peak scheduling

• Splitting workloads across MediaAgents

• Use fast snapshot backups

✅ 41. How do you test a restore?

Answer:
Use sandbox restores:

• Restore to alternate location

• Validate integrity

• Document test results

• Run on sample and full data sets

⭐️ Pro Tips for Interview Success

✔ Use real examples from your Commvault deployments
✔ Discuss metrics: RPO, RTO, throughput, dedupe ratios
✔ Explain how you solved performance or restore issues
✔ Show knowledge of automation (scripts, APIs, CLI)