Uploaded September 2025 | Updated September 2026, 1 week ago
lawrence.video
Klara Systems
klarasystems.com
Previous video with Allan Understanding ZFS in the Real World: Mistakes Made, Lessons Learned & Future Plans
youtu.be/OscKOZ5nxxA?si=qbx23a9sQCpCZzQC
Why You Can’t Trust AI to Tune ZFS
klarasystems.com/articles/why-you-cant-trust-ai-to-tune-zfs
Connect With Us
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Lawrence Systems Shirts and Swag
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AFFILIATES & REFERRAL LINKS
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Amazon Affiliate Store
🛒 amazon.com/shop/lawrencesystemspcpickup
UniFi Affiliate Link
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All Of Our Affiliates help us out and can get you discounts!
🛒 lawrencesystems.com/partners-we-love
Gear we use on Kit
🛒 kit.co/lawrencesystems
Use OfferCode LTSERVICES to get 10% off your order at
🛒 https://www.techsupplydirect.com?aff=2
Digital Ocean Offer Code
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HostiFi UniFi Cloud Hosting Service
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Protect your privacy with a VPN from Private Internet Access
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Patreon
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Chapters
00:00 – Intro: Tom & Allan Jude on ZFS + NVMe
00:45 – ZFS Origins & Early Hard Drive Constraints
01:30 – Copy-on-Write, Batch Writes, and HDD Limits
03:07 – Free Space Fragmentation and Pool Full Behavior
04:38 – Gang Blocks, Sector Size Changes, and Modernization
06:20 – Logical Block Addressing & Compatibility Layers
07:20 – Flash Translation Layers in SSDs & NVMe
08:18 – SMR vs NVMe Parallels and Alignment Costs
09:09 – Device-Specific Tuning Challenges in ZFS
09:58 – SSD Garbage Collection, TRIM, and Write Stalls
10:52 – Write Aggregation, Prefetch, and Queue Management
11:37 – NVMe Latency, Microsecond Ops & Outpacing ZFS Logic
14:20 – Real-World NVMe Workloads (Media, IOPS, Databases)
15:55 – ZFS Roadmap: Optimizations, Auto-Tuning, and Use Cases
17:25 – Detecting Device Types: HDD, SSD, NVMe, NVMe-oF
20:53 – Solid state challenges with Error Correction
22:09 – Block Pointer Trees, Verification, and NAND Reliability
24:10 – Compression Limits & Embedded Block Pointers
25:48 – Per Drive Uber Blocks and Labels
30:09 – Storage with CXL
31:42 – Tiered Storage: NVMe, SSD, HDD, Tape, and Cloud
32:35 – Emerging Features and Community Involvement
33:02 – ZFS O_DIRECT Application Cache
36:00 – Media Demands Driving ZFS Development
37:38 – ZFS at Scale: CERN, Lawrence Livermore, SCIENCE!
lawrence.video
Klara Systems
klarasystems.com
Previous video with Allan Understanding ZFS in the Real World: Mistakes Made, Lessons Learned & Future Plans
youtu.be/OscKOZ5nxxA?si=qbx23a9sQCpCZzQC
Why You Can’t Trust AI to Tune ZFS
klarasystems.com/articles/why-you-cant-trust-ai-to-tune-zfs
Connect With Us
---------------------------------------------------
+ Hire Us for a project: lawrencesystems.com/hire-us
+ Toms' Twitter 🐦 twitter.com/TomLawrenceTech
+ Our Website lawrencesystems.com
+ Our Forums forums.lawrencesystems.com
+ Instagram instagram.com/lawrencesystems
+ Facebook facebook.com/Lawrencesystems
+ GitHub github.com/lawrencesystems
Lawrence Systems Shirts and Swag
---------------------------------------------------
►👕 lawrence.video/swag
AFFILIATES & REFERRAL LINKS
---------------------------------------------------
Amazon Affiliate Store
🛒 amazon.com/shop/lawrencesystemspcpickup
UniFi Affiliate Link
🛒 lawrence.video/unifi-affiliate
All Of Our Affiliates help us out and can get you discounts!
🛒 lawrencesystems.com/partners-we-love
Gear we use on Kit
🛒 kit.co/lawrencesystems
Use OfferCode LTSERVICES to get 10% off your order at
🛒 https://www.techsupplydirect.com?aff=2
Digital Ocean Offer Code
🛒 https://m.do.co/c/85de8d181725
HostiFi UniFi Cloud Hosting Service
🛒 hostifi.net/?via=lawrencesystems
Protect your privacy with a VPN from Private Internet Access
🛒 privateinternetaccess.com/pages/buy-vpn/LRNSYS
Patreon
💰 patreon.com/lawrencesystems
Chapters
00:00 – Intro: Tom & Allan Jude on ZFS + NVMe
00:45 – ZFS Origins & Early Hard Drive Constraints
01:30 – Copy-on-Write, Batch Writes, and HDD Limits
03:07 – Free Space Fragmentation and Pool Full Behavior
04:38 – Gang Blocks, Sector Size Changes, and Modernization
06:20 – Logical Block Addressing & Compatibility Layers
07:20 – Flash Translation Layers in SSDs & NVMe
08:18 – SMR vs NVMe Parallels and Alignment Costs
09:09 – Device-Specific Tuning Challenges in ZFS
09:58 – SSD Garbage Collection, TRIM, and Write Stalls
10:52 – Write Aggregation, Prefetch, and Queue Management
11:37 – NVMe Latency, Microsecond Ops & Outpacing ZFS Logic
14:20 – Real-World NVMe Workloads (Media, IOPS, Databases)
15:55 – ZFS Roadmap: Optimizations, Auto-Tuning, and Use Cases
17:25 – Detecting Device Types: HDD, SSD, NVMe, NVMe-oF
20:53 – Solid state challenges with Error Correction
22:09 – Block Pointer Trees, Verification, and NAND Reliability
24:10 – Compression Limits & Embedded Block Pointers
25:48 – Per Drive Uber Blocks and Labels
30:09 – Storage with CXL
31:42 – Tiered Storage: NVMe, SSD, HDD, Tape, and Cloud
32:35 – Emerging Features and Community Involvement
33:02 – ZFS O_DIRECT Application Cache
36:00 – Media Demands Driving ZFS Development
37:38 – ZFS at Scale: CERN, Lawrence Livermore, SCIENCE!
