TrueNAS Practice
TrueNAS — Practice Problems
15 MCQ questions covering ZFS concepts, pool management, datasets, shares, snapshots, replication, and networking. Select an option to check your answer and view the explanation.
ZFS Concepts
Pool Management
Datasets and Properties
Snapshots and Replication
Networking and Shares
Intuition
TrueNAS management is about balancing performance, capacity, and reliability: Storage configuration involves trade-offs between redundancy (RAID level), performance (stripe width), and capacity (usable space).
Why it matters: Proper storage configuration prevents data loss and ensures consistent performance for users and applications.
The key insight: Regular monitoring and proactive maintenance, checking SMART data, verifying scrub results, and monitoring usage trends, prevents catastrophic failures.
Common Mistakes
Configuring SMB shares without proper permissions: SMB uses Windows-style ACLs. Setting permissions incorrectly causes access denied errors or exposes data to unauthorized users. Test share access from multiple clients before going live.
Using TrueNAS for VM storage without understanding IOPS: ZFS volumes for VMs need sufficient IOPS. Small random reads/writes perform differently than sequential transfers. Use SSDs for VM storage and configure appropriate record sizes.
Not configuring email alerts: TrueNAS can email you about pool degradation, temperature warnings, and SMART alerts. Without email configuration, hardware failures may go unnoticed until its too late.
Cross-References
- Site Home: Main landing page for truenas notes.
- Practice: Practice problems for revision.
Detailed Content
Core Concepts
Worked Examples
Common Mistakes
- Rushing through foundational material
- Not practising problems after reading
- Failing to connect concepts across topics