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The HL15 NAS build using an Arm64 CPU was surprisingly loud—and power-hungry.

Can we improve that? This video will explore making it almost silent, while also reducing power consumption by half. Then we'll dive deeper into performance and efficiency.

Check out the Ansible playbook I'm using to manage my NAS and set up ZFS and Samba:

https://github.com/geerlingguy/hl15-a...

Links to other things mentioned in this video (some links are affiliate links):

- Earlier build video (part 1):    • How efficient can I build the 100% Ar...  
- Noctua NF-A12x25 PWM fan: https://amzn.to/3SXi4vl
- Noctua NA-IS1-12 Sx2 Inlet Side Spacers: https://amzn.to/3wzH6ZN
- Noctua NA-FH1 8-channel fan hub: https://amzn.to/48zpFpt
- Techno Tim's HL15 video:    • EVERYTHING You Should Know About the ...  
- Top500 Benchmarking repo: https://github.com/geerlingguy/top500...
- THIRDREALITY ZigBee Smart Plug: https://amzn.to/3wx2YVI
- Reed Instruments R8050 Sound Level Meter: https://amzn.to/3P0mwrX
- Home Assistant ApexCharts graphing plugin: https://github.com/RomRider/apexchart...

Support me on Patreon:   / geerlingguy  
Sponsor me on GitHub: https://github.com/sponsors/geerlingguy
Merch: https://redshirtjeff.com
2nd Channel:    / geerlingengineering  

Contents:

00:00 - Problems to be solved
01:04 - Only fans
04:41 - Stripping down the system
06:47 - What is efficiency?
07:35 - Benchmarking the CPU: Top500
09:02 - Arm support: Linux and Ansible
11:49 - Benchmarking ZFS: RAIDZ2, SLOG, L2ARC?
15:48 - ZFS learnings on the HL15
16:33 - Keeping my mind sharp