Update content for md

4 files changed, 163 insertions, 163 deletions

diff --git a/about/resources.md b/about/resources.md
index dd5c998a..c4e71606 100644
--- a/about/resources.md
+++ b/about/resources.md
@@ -35,110 +35,110 @@ You won't find any links on this site because, over time, the links will break.
 
 In random order:
 
-* Raku Fundamentals; Moritz Lenz; Apress
-* Polished Ruby Programming; Jeremy Evans; Packt Publishing
-* Kubernetes Cookbook; Sameer Naik, Sébastien Goasguen, Jonathan Michaux; O'Reilly
-* Pro Puppet; James Turnbull, Jeffrey McCune; Apress
-* Think Raku (aka Think Perl 6); Laurent Rosenfeld, Allen B. Downey; O'Reilly
-* Perl New Features; Joshua McAdams, brian d foy; Perl School
-* Learn You Some Erlang for Great Good; Fred Herbert; No Starch Press
-* Terraform Cookbook; Mikael Krief; Packt Publishing
-* 21st Century C: C Tips from the New School; Ben Klemens; O'Reilly
 * Data Science at the Command Line; Jeroen Janssens; O'Reilly
-* Object-Oriented Programming with ANSI-C; Axel-Tobias Schreiner
-* Tmux 2: Productive Mouse-free Development; Brain P. Hogan; The Pragmatic Programmers 
-* Java ist auch eine Insel; Christian Ullenboom; 
-* Distributed Systems: Principles and Paradigms; Andrew S. Tanenbaum; Pearson
+* Effective Java; Joshua Bloch; Addison-Wesley Professional
+* Leanring eBPF; Liz Rice; O'Reilly
+* The Practise of System and Network Administration; Thomas A. Limoncelli, Christina J. Hogan, Strata R. Chalup; Addison-Wesley Professional Pro Git; Scott Chacon, Ben Straub; Apress
 * The DevOps Handbook; Gene Kim, Jez Humble, Patrick Debois, John Willis; Audible
-* Ultimate Go Notebook; Bill Kennedy
-* Programming Ruby 3.3 (5th Edition); Noel Rappin, with Dave Thomas; The Pragmatic Bookshelf
-* The Docker Book; James Turnbull; Kindle
-* Programming Perl aka "The Camel Book"; Tom Christiansen, brian d foy, Larry Wall & Jon Orwant; O'Reilly
-* DNS and BIND; Cricket Liu; O'Reilly
-* Higher Order Perl; Mark Dominus; Morgan Kaufmann
+* Effective awk programming; Arnold Robbins; O'Reilly
+* Funktionale Programmierung; Peter Pepper; Springer
+* Kubernetes Cookbook; Sameer Naik, Sébastien Goasguen, Jonathan Michaux; O'Reilly
 * 100 Go Mistakes and How to Avoid Them; Teiva Harsanyi; Manning Publications
-* Leanring eBPF; Liz Rice; O'Reilly
-* Learn You a Haskell for Great Good!; Miran Lipovaca; No Starch Press
-* Developing Games in Java; David Brackeen and others...; New Riders
-* The Kubernetes Book; Nigel Poulton; Unabridged Audiobook
 * Concurrency in Go; Katherine Cox-Buday; O'Reilly
-* The Go Programming Language; Alan A. A. Donovan; Addison-Wesley Professional
-* Funktionale Programmierung; Peter Pepper; Springer
-* The Pragmatic Programmer; David Thomas; Addison-Wesley
-* Raku Recipes; J.J. Merelo; Apress
-* The KCNA (Kubernetes and Cloud Native Associate) Book; Nigel Poulton
+* Hands-on Infrastructure Monitoring with Prometheus; Joel Bastos, Pedro Araujo; Packt 
+* Go Brain Teasers - Exercise Your Mind; Miki Tebeka; The Pragmatic Programmers
 * Chaos Engineering - System Resiliency in Practice; Casey Rosenthal and Nora Jones; eBook
-* 97 things every SRE should know; Emil Stolarsky, Jaime Woo; O'Reilly
-* Seeking SRE: Conversations About Running Production Systems at Scale; David N. Blank-Edelman; eBook
-* Site Reliability Engineering; How Google runs production systems; O'Reilly
-* Clusterbau mit Linux-HA; Michael Schwartzkopff; O'Reilly
+* Ultimate Go Notebook; Bill Kennedy
+* Learn You Some Erlang for Great Good; Fred Herbert; No Starch Press
+* Developing Games in Java; David Brackeen and others...; New Riders
+* Pro Puppet; James Turnbull, Jeffrey McCune; Apress
+* The KCNA (Kubernetes and Cloud Native Associate) Book; Nigel Poulton
+* Tmux 2: Productive Mouse-free Development; Brain P. Hogan; The Pragmatic Programmers 
+* The Docker Book; James Turnbull; Kindle
+* Amazon Web Services in Action; Michael Wittig and Andreas Wittig; Manning Publications
 * C++ Programming Language; Bjarne Stroustrup;
-* Systemprogrammierung in Go; Frank Müller; dpunkt
+* Raku Fundamentals; Moritz Lenz; Apress
+* The Go Programming Language; Alan A. A. Donovan; Addison-Wesley Professional
+* Think Raku (aka Think Perl 6); Laurent Rosenfeld, Allen B. Downey; O'Reilly
 * DevOps And Site Reliability Engineering Handbook; Stephen Fleming; Audible
-* Go Brain Teasers - Exercise Your Mind; Miki Tebeka; The Pragmatic Programmers
-* Hands-on Infrastructure Monitoring with Prometheus; Joel Bastos, Pedro Araujo; Packt 
+* Programming Perl aka "The Camel Book"; Tom Christiansen, brian d foy, Larry Wall & Jon Orwant; O'Reilly
+* Raku Recipes; J.J. Merelo; Apress
+* Clusterbau mit Linux-HA; Michael Schwartzkopff; O'Reilly
+* 21st Century C: C Tips from the New School; Ben Klemens; O'Reilly
+* Java ist auch eine Insel; Christian Ullenboom; 
+* Terraform Cookbook; Mikael Krief; Packt Publishing
 * Modern Perl; Chromatic ; Onyx Neon Press
+* Perl New Features; Joshua McAdams, brian d foy; Perl School
+* Higher Order Perl; Mark Dominus; Morgan Kaufmann
+* Learn You a Haskell for Great Good!; Miran Lipovaca; No Starch Press
+* Object-Oriented Programming with ANSI-C; Axel-Tobias Schreiner
 * Systems Performance Tuning; Gian-Paolo D. Musumeci and others...; O'Reilly
-* Amazon Web Services in Action; Michael Wittig and Andreas Wittig; Manning Publications
-* Effective Java; Joshua Bloch; Addison-Wesley Professional
-* Effective awk programming; Arnold Robbins; O'Reilly
-* The Practise of System and Network Administration; Thomas A. Limoncelli, Christina J. Hogan, Strata R. Chalup; Addison-Wesley Professional Pro Git; Scott Chacon, Ben Straub; Apress
+* Site Reliability Engineering; How Google runs production systems; O'Reilly
+* 97 things every SRE should know; Emil Stolarsky, Jaime Woo; O'Reilly
+* DNS and BIND; Cricket Liu; O'Reilly
+* Systemprogrammierung in Go; Frank Müller; dpunkt
+* Polished Ruby Programming; Jeremy Evans; Packt Publishing
+* The Pragmatic Programmer; David Thomas; Addison-Wesley
+* Distributed Systems: Principles and Paradigms; Andrew S. Tanenbaum; Pearson
+* Seeking SRE: Conversations About Running Production Systems at Scale; David N. Blank-Edelman; eBook
+* Programming Ruby 3.3 (5th Edition); Noel Rappin, with Dave Thomas; The Pragmatic Bookshelf
+* The Kubernetes Book; Nigel Poulton; Unabridged Audiobook
 
 ## Technical references
 
 I didn't read them from the beginning to the end, but I am using them to look up things. The books are in random order:
 
-* BPF Performance Tools - Linux System and Application Observability, Brendan Gregg; Addison Wesley
-* Understanding the Linux Kernel; Daniel P. Bovet, Marco Cesati; O'Reilly
 * Groovy Kurz & Gut; Joerg Staudemeier; O'Reilly
+* BPF Performance Tools - Linux System and Application Observability, Brendan Gregg; Addison Wesley
 * Go: Design Patterns for Real-World Projects; Mat Ryer; Packt
 * The Linux Programming Interface; Michael Kerrisk; No Starch Press 
-* Algorithms; Robert Sedgewick, Kevin Wayne; Addison Wesley
-* Relayd and Httpd Mastery; Michael W Lucas
+* Understanding the Linux Kernel; Daniel P. Bovet, Marco Cesati; O'Reilly
 * Implementing Service Level Objectives; Alex Hidalgo; O'Reilly
+* Relayd and Httpd Mastery; Michael W Lucas
+* Algorithms; Robert Sedgewick, Kevin Wayne; Addison Wesley
 
 ## Self-development and soft-skills books
 
 In random order:
 
 * Digital Minimalism; Cal Newport; Portofolio Penguin
-* Slow Productivity; Cal Newport; Penguin Random House
-* Influence without Authority; A. Cohen, D. Bradford; Wiley
-* Getting Things Done; David Allen
+* Consciousness: A Very Short Introduction; Susan Blackmore; Oxford Uiversity Press
+* The Courage to Be Disliked; Ichiro Kishimi and Fumitake Koga; Audiobook
+* The Phoenix Project - A Novel About IT, DevOps, and Helping your Business Win; Gene Kim and Kevin Behr; Trade Select
+* 97 Things Every Engineering Manager Should Know; Camille Fournier; Audiobook
+* Atomic Habits; James Clear; Random House Business
 * Soft Skills; John Sommez; Manning Publications
-* Stop starting, start finishing; Arne Roock; Lean-Kanban University  
-* The Bullet Journal Method; Ryder Carroll; Fourth Estate
+* Ultralearning; Scott Young; Thorsons
 * Coders at Work - Reflections on the craft of programming, Peter Seibel and Mitchell Dorian et al., Audiobook
-* The Software Engineer's Guidebook: Navigating senior, tech lead, and staff engineer positions at tech companies and startups; Gergely Orosz; Audiobook 
+* The Good Enough Job; Simone Stolzoff; Ebury Edge
+* Psycho-Cybernetics; Maxwell Maltz; Perigee Books
+* So Good They Can't Ignore You; Cal Newport; Business Plus
+* Time Management for System Administrators; Thomas A. Limoncelli; O'Reilly
+* The Power of Now; Eckhard Tolle; Yellow Kite
+* The Daily Stoic; Ryan Holiday, Stephen Hanselman; Profile Books
 * Eat That Frog!; Brian Tracy; Hodder Paperbacks
+* Eat That Frog; Brian Tracy
+* Staff Engineer: Leadership beyond the management track; Will Larson; Audiobook
 * Never Split the Difference; Chris Voss, Tahl Raz; Random House Business
-* The Power of Now; Eckhard Tolle; Yellow Kite
-* Ultralearning; Anna Laurent; Self-published via Amazon
+* The Bullet Journal Method; Ryder Carroll; Fourth Estate
 * Deep Work; Cal Newport; Piatkus
-* Meditation for Mortals, Oliver Burkeman, Audiobook
+* The Obstacle Is The Way; Ryan Holiday; Profile Books Ltd
 * The Joy of Missing Out; Christina Crook; New Society Publishers
+* Getting Things Done; David Allen
+* Stop starting, start finishing; Arne Roock; Lean-Kanban University  
+* Meditation for Mortals, Oliver Burkeman, Audiobook
+* Who Moved My Cheese?; Dr. Spencer Johnson; Vermilion
+* 101 Essays that change the way you think; Brianna Wiest; Audiobook
 * The Complete Software Developer's Career Guide; John Sonmez; Unabridged Audiobook
-* Search Inside Yourself - The Unexpected path to Achieving Success, Happiness (and World Peace); Chade-Meng Tan, Daniel Goleman, Jon Kabat-Zinn; HarperOne
+* Influence without Authority; A. Cohen, D. Bradford; Wiley
+* The Software Engineer's Guidebook: Navigating senior, tech lead, and staff engineer positions at tech companies and startups; Gergely Orosz; Audiobook 
 * The 7 Habits Of Highly Effective People; Stephen R. Covey; Simon & Schuster UK
-* Consciousness: A Very Short Introduction; Susan Blackmore; Oxford Uiversity Press
-* The Obstacle Is The Way; Ryan Holiday; Profile Books Ltd
-* The Phoenix Project - A Novel About IT, DevOps, and Helping your Business Win; Gene Kim and Kevin Behr; Trade Select
-* Time Management for System Administrators; Thomas A. Limoncelli; O'Reilly
-* So Good They Can't Ignore You; Cal Newport; Business Plus
-* Solve for Happy; Mo Gawdat (RE-READ 1ST TIME)
-* The Daily Stoic; Ryan Holiday, Stephen Hanselman; Profile Books
-* Who Moved My Cheese?; Dr. Spencer Johnson; Vermilion
 * Buddah and Einstein walk into a Bar; Guy Joseph Ale, Claire Bloom; Blackstone Publishing
-* The Good Enough Job; Simone Stolzoff; Ebury Edge
-* The Courage to Be Disliked; Ichiro Kishimi and Fumitake Koga; Audiobook
-* 97 Things Every Engineering Manager Should Know; Camille Fournier; Audiobook
-* 101 Essays that change the way you think; Brianna Wiest; Audiobook
-* Staff Engineer: Leadership beyond the management track; Will Larson; Audiobook
-* Eat That Frog; Brian Tracy
+* Slow Productivity; Cal Newport; Penguin Random House
+* Ultralearning; Anna Laurent; Self-published via Amazon
+* Search Inside Yourself - The Unexpected path to Achieving Success, Happiness (and World Peace); Chade-Meng Tan, Daniel Goleman, Jon Kabat-Zinn; HarperOne
+* Solve for Happy; Mo Gawdat (RE-READ 1ST TIME)
 * The Off Switch; Mark Cropley; Virgin Books (RE-READ 1ST TIME)
-* Atomic Habits; James Clear; Random House Business
-* Ultralearning; Scott Young; Thorsons
-* Psycho-Cybernetics; Maxwell Maltz; Perigee Books
 
 [Here are notes of mine for some of the books](../notes/index.md)  
 
@@ -146,30 +146,30 @@ In random order:
 
 Some of these were in-person with exams; others were online learning lectures only. In random order:
 
-* Cloud Operations on AWS - Learn how to configure, deploy, maintain, and troubleshoot your AWS environments; 3-day online live training with labs; Amazon
-* Apache Tomcat Best Practises; 3-day on-site training
+* Red Hat Certified System Administrator; Course + certification (Although I had the option, I decided not to take the next course as it is more effective to self learn what I need)
 * Linux Security and Isolation APIs Training; Michael Kerrisk; 3-day on-site training
-* Protocol buffers; O'Reilly Online
-* F5 Loadbalancers Training; 2-day on-site training; F5, Inc. 
+* AWS Immersion Day; Amazon; 1-day interactive online training 
+* Functional programming lecture; Remote University of Hagen
 * Ultimate Go Programming; Bill Kennedy; O'Reilly Online
 * Structure and Interpretation of Computer Programs; Harold Abelson and more...; 
-* The Well-Grounded Rubyist Video Edition; David. A. Black; O'Reilly Online
-* Scripting Vim; Damian Conway; O'Reilly Online
-* Functional programming lecture; Remote University of Hagen
+* Algorithms Video Lectures; Robert Sedgewick; O'Reilly Online
 * MySQL Deep Dive Workshop; 2-day on-site training
+* Apache Tomcat Best Practises; 3-day on-site training
 * Developing IaC with Terraform (with Live Lessons); O'Reilly Online
-* Red Hat Certified System Administrator; Course + certification (Although I had the option, I decided not to take the next course as it is more effective to self learn what I need)
 * The Ultimate Kubernetes Bootcamp; School of Devops; O'Reilly Online
-* Algorithms Video Lectures; Robert Sedgewick; O'Reilly Online
-* AWS Immersion Day; Amazon; 1-day interactive online training 
+* F5 Loadbalancers Training; 2-day on-site training; F5, Inc. 
+* Protocol buffers; O'Reilly Online
+* The Well-Grounded Rubyist Video Edition; David. A. Black; O'Reilly Online
+* Scripting Vim; Damian Conway; O'Reilly Online
+* Cloud Operations on AWS - Learn how to configure, deploy, maintain, and troubleshoot your AWS environments; 3-day online live training with labs; Amazon
 
 ## Technical guides
 
 These are not whole books, but guides (smaller or larger) which I found very useful. in random order:
 
-* How CPUs work at https://cpu.land
-* Raku Guide at https://raku.guide  
 * Advanced Bash-Scripting Guide 
+* Raku Guide at https://raku.guide  
+* How CPUs work at https://cpu.land
 
 ## Podcasts
 
@@ -177,58 +177,58 @@ These are not whole books, but guides (smaller or larger) which I found very use
 
 In random order:
 
-* Pratical AI
-* Modern Mentor
-* Hidden Brain
-* Deep Questions with Cal Newport
 * The Changelog Podcast(s)
+* Cup o' Go [Golang]
 * Fallthrough [Golang]
-* The Pragmatic Engineer Podcast
+* Deep Questions with Cal Newport
 * Fork Around And Find Out
-* Backend Banter
-* BSD Now [BSD]
-* Dev Interrupted
-* Cup o' Go [Golang]
-* Maintainable
 * Wednesday Wisdom
+* Dev Interrupted
+* Hidden Brain
+* Backend Banter
 * The ProdCast (Google SRE Podcast)
+* Maintainable
+* The Pragmatic Engineer Podcast
+* Modern Mentor
+* Pratical AI
+* BSD Now [BSD]
 
 ### Podcasts I liked
 
 I liked them but am not listening to them anymore. The podcasts have either "finished" (no more episodes) or I stopped listening to them due to time constraints or a shift in my interests.
 
-* Ship It (predecessor of Fork Around And Find Out)
-* Go Time (predecessor of fallthrough)
-* Modern Mentor
 * CRE: Chaosradio Express [german]
 * FLOSS weekly
 * Java Pub House
+* Ship It (predecessor of Fork Around And Find Out)
+* Modern Mentor
+* Go Time (predecessor of fallthrough)
 
 ## Newsletters I like
 
 This is a mix of tech and non-tech newsletters I am subscribed to. In random order:
 
+* byteSizeGo
 * The Imperfectionist
-* VK Newsletter
-* Register Spill
+* The Pragmatic Engineer
 * Changelog News
-* Andreas Brandhorst Newsletter (Sci-Fi author)
-* Golang Weekly
 * Ruby Weekly
-* The Pragmatic Engineer
-* byteSizeGo
+* Golang Weekly
 * Applied Go Weekly Newsletter
-* Monospace Mentor
 * The Valuable Dev
+* Register Spill
+* Monospace Mentor
+* Andreas Brandhorst Newsletter (Sci-Fi author)
+* VK Newsletter
 
 ## Magazines I like(d)
 
 This is a mix of tech I like(d). I may not be a current subscriber, but now and then, I buy an issue. In random order:
 
 * LWN (online only)
+* freeX (not published anymore)
 * Linux User
 * Linux Magazine
-* freeX (not published anymore)
 
 # Formal education
 
diff --git a/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.md b/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.md
index 6bae262f..c588985f 100644
--- a/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.md
+++ b/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.md
@@ -20,9 +20,6 @@ This is the sixth blog post about the f3s series for self-hosting demands in a h
 * [⇢ f3s: Kubernetes with FreeBSD - Part 6: Storage](#f3s-kubernetes-with-freebsd---part-6-storage)
 * [⇢ ⇢ Introduction](#introduction)
 * [⇢ ⇢ Additional storage capacity](#additional-storage-capacity)
-* [⇢ ⇢ Update: Upgrade to 4TB drives](#update-upgrade-to-4tb-drives)
-* [⇢ ⇢ ⇢ Upgrading f1 (simpler approach)](#upgrading-f1-simpler-approach)
-* [⇢ ⇢ ⇢ Upgrading f0 (using ZFS resilvering)](#upgrading-f0-using-zfs-resilvering)
 * [⇢ ⇢ ZFS encryption keys](#zfs-encryption-keys)
 * [⇢ ⇢ ⇢ UFS on USB keys](#ufs-on-usb-keys)
 * [⇢ ⇢ ⇢ Generating encryption keys](#generating-encryption-keys)
@@ -65,6 +62,9 @@ This is the sixth blog post about the f3s series for self-hosting demands in a h
 * [⇢ ⇢ ⇢ Testing NFS Mount with Stunnel](#testing-nfs-mount-with-stunnel)
 * [⇢ ⇢ ⇢ Testing CARP Failover with mounted clients and stale file handles:](#testing-carp-failover-with-mounted-clients-and-stale-file-handles)
 * [⇢ ⇢ ⇢ Complete Failover Test](#complete-failover-test)
+* [⇢ ⇢ Update: Upgrade to 4TB drives](#update-upgrade-to-4tb-drives)
+* [⇢ ⇢ ⇢ Upgrading f1 (simpler approach)](#upgrading-f1-simpler-approach)
+* [⇢ ⇢ ⇢ Upgrading f0 (using ZFS resilvering)](#upgrading-f0-using-zfs-resilvering)
 * [⇢ ⇢ Conclusion](#conclusion)
 * [⇢ ⇢ Future Storage Explorations](#future-storage-explorations)
 * [⇢ ⇢ ⇢ MinIO for S3-Compatible Object Storage](#minio-for-s3-compatible-object-storage)
@@ -120,61 +120,6 @@ paul@f1:/ % doas camcontrol devlist
 <CT1000BX500SSD1 M6CR072>          at scbus1 target 0 lun 0 (pass1,ada1)
 ```
 
-## Update: Upgrade to 4TB drives
-
-> Update: 27.01.2026 I have since replaced the 1TB drives with 4TB drives for more storage capacity. The upgrade procedure was different for each node:
-
-### Upgrading f1 (simpler approach)
-
-Since f1 is the replication sink, the upgrade was straightforward:
-
-* 1. Physically replaced the 1TB drive with the 4TB drive
-* 2. Re-setup the drive as described earlier in this blog post
-* 3. Re-replicated all data from f0 to f1 via zrepl
-* 4. Reloaded the encryption keys as described in this blog post
-* 5. Set the mount point again for the encrypted dataset, explicitly as read-only (since f1 is the replication sink)
-
-### Upgrading f0 (using ZFS resilvering)
-
-For f0, which is the primary storage node, I used ZFS resilvering to avoid data loss:
-
-* 1. Plugged the new 4TB drive into an external USB SSD drive reader
-* 2. Attached the 4TB drive to the zdata pool for resilvering
-* 3. Once resilvering completed, detached the 1TB drive from the zdata pool
-* 4. Shutdown f0 and physically replaced the internal drive
-* 5. Booted with the new drive in place
-* 6. Expanded the pool to use the full 4TB capacity:
-
-```sh
-paul@f0:~ % doas zpool online -e /dev/ada1
-```
-
-* 7. Reloaded the encryption keys as described in this blog post
-* 8. Set the mount point again for the encrypted dataset
-
-This was a one-time effort on both nodes - after a reboot, everything was remembered and came up normally. Here are the updated outputs:
-
-```sh
-paul@f0:~ % doas zpool list
-NAME    SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
-zdata  3.63T   677G  2.97T        -         -     3%    18%  1.00x    ONLINE  -
-zroot   472G  68.4G   404G        -         -    13%    14%  1.00x    ONLINE  -
-
-paul@f0:~ % doas camcontrol devlist
-<512GB SSD D910R170>               at scbus0 target 0 lun 0 (pass0,ada0)
-<SD Ultra 3D 4TB 530500WD>         at scbus1 target 0 lun 0 (pass1,ada1)
-<Generic Flash Disk 8.07>          at scbus2 target 0 lun 0 (da0,pass2)
-```
-
-We're still using different SSD models on f1 (WD Blue SA510 4TB) to avoid simultaneous failures:
-
-```sh
-paul@f1:~ % doas camcontrol devlist
-<512GB SSD D910R170>               at scbus0 target 0 lun 0 (pass0,ada0)
-<WD Blue SA510 2.5 4TB 530500WD>   at scbus1 target 0 lun 0 (pass1,ada1)
-<Generic Flash Disk 8.07>          at scbus2 target 0 lun 0 (da0,pass2)
-```
-
 ## ZFS encryption keys
 
 ZFS native encryption requires encryption keys to unlock datasets. We need a secure method to store these keys that balances security with operational needs:
@@ -1854,6 +1799,61 @@ Important Considerations:
 * Applications should handle brief NFS errors gracefully
 * For zero-downtime requirements, consider synchronous replication or distributed storage (see "Future storage explorations" section later in this blog post)
 
+## Update: Upgrade to 4TB drives
+
+> Update: 27.01.2026 I have since replaced the 1TB drives with 4TB drives for more storage capacity. The upgrade procedure was different for each node!
+
+### Upgrading f1 (simpler approach)
+
+Since f1 is the replication sink, the upgrade was straightforward:
+
+* 1. Physically replaced the 1TB drive with the 4TB drive
+* 2. Re-setup the drive as described earlier in this blog post
+* 3. Re-replicated all data from f0 to f1 via zrepl
+* 4. Reloaded the encryption keys as described in this blog post
+* 5. Set the mount point again for the encrypted dataset, explicitly as read-only (since f1 is the replication sink)
+
+### Upgrading f0 (using ZFS resilvering)
+
+For f0, which is the primary storage node, I used ZFS resilvering to avoid data loss:
+
+* 1. Plugged the new 4TB drive into an external USB SSD drive reader
+* 2. Attached the 4TB drive to the zdata pool for resilvering
+* 3. Once resilvering completed, detached the 1TB drive from the zdata pool
+* 4. Shutdown f0 and physically replaced the internal drive
+* 5. Booted with the new drive in place
+* 6. Expanded the pool to use the full 4TB capacity:
+
+```sh
+paul@f0:~ % doas zpool online -e /dev/ada1
+```
+
+* 7. Reloaded the encryption keys as described in this blog post
+* 8. Set the mount point again for the encrypted dataset
+
+This was a one-time effort on both nodes - after a reboot, everything was remembered and came up normally. Here are the updated outputs:
+
+```sh
+paul@f0:~ % doas zpool list
+NAME    SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
+zdata  3.63T   677G  2.97T        -         -     3%    18%  1.00x    ONLINE  -
+zroot   472G  68.4G   404G        -         -    13%    14%  1.00x    ONLINE  -
+
+paul@f0:~ % doas camcontrol devlist
+<512GB SSD D910R170>               at scbus0 target 0 lun 0 (pass0,ada0)
+<SD Ultra 3D 4TB 530500WD>         at scbus1 target 0 lun 0 (pass1,ada1)
+<Generic Flash Disk 8.07>          at scbus2 target 0 lun 0 (da0,pass2)
+```
+
+We're still using different SSD models on f1 (WD Blue SA510 4TB) to avoid simultaneous failures:
+
+```sh
+paul@f1:~ % doas camcontrol devlist
+<512GB SSD D910R170>               at scbus0 target 0 lun 0 (pass0,ada0)
+<WD Blue SA510 2.5 4TB 530500WD>   at scbus1 target 0 lun 0 (pass1,ada1)
+<Generic Flash Disk 8.07>          at scbus2 target 0 lun 0 (da0,pass2)
+```
+
 ## Conclusion
 
 We've built a robust, encrypted storage system for our FreeBSD-based Kubernetes cluster that provides:
diff --git a/index.md b/index.md
index 2c36b916..1b853994 100644
--- a/index.md
+++ b/index.md
@@ -1,6 +1,6 @@
 # Hello!
 
-> This site was generated at 2026-01-27T09:57:01+02:00 by `Gemtexter`
+> This site was generated at 2026-01-27T10:09:14+02:00 by `Gemtexter`
 
 Welcome to the foo.zone!
 
diff --git a/uptime-stats.md b/uptime-stats.md
index 24fb5e9b..3a5b47c5 100644
--- a/uptime-stats.md
+++ b/uptime-stats.md
@@ -1,6 +1,6 @@
 # My machine uptime stats
 
-> This site was last updated at 2026-01-27T09:57:00+02:00
+> This site was last updated at 2026-01-27T10:09:14+02:00
 
 The following stats were collected via `uptimed` on all of my personal computers over many years and the output was generated by `guprecords`, the global uptime records stats analyser of mine.