ZFS AnyRaid in ZFS

They really need to add chapters to their videos for each talk. It’s a pain in the a** to scroll a long video and wait for buffering just to skip forward or backwards to the talk I want to watch. Don’t just dump the entire stream and forget it.

Organizers. Fix this.
 
If the 2 and the 8 are the only drives you have, and you asked for a 2-way mirror, your 2-way mirror will only have 2TB capacity. I guess the remainder of the 8TB could be used for non-redundant storage if you like to use that.

The interesting case is if you have for example a 2, 5 and 8 TB drive, and ask for a mirror: You will get 7 TB capacity. And if you replace the 2 with a new 12 TB, your usable mirrored capacity will go up to 12.5 TB, using every single byte of the disks.

With wider layouts (in particular the ones that are commonly used with RAID-Z and -Z2/-Z3), the combinatorics gets tricky, and figuring out the capacity on the back of an envelope may be too difficult.
 
Maturin said:
Music is too annoying. Unwatchable.
Click to expand...
  1. 00:08:29 - @cracauer 's link start time *
  2. 00:08:30 - Allan Jude start talking *
  3. 00:10:22 - no more music during the remainder of the talk
  4. 01:00:40 - Allan Jude ends his presentation
I'd say a bit of perseverance goes a long way.

___
* My "guess" is that at the beginning of the presentation, someone didn't cut out the music in time at the mixer.
 
I think this is rather intriguing. In general, it's probably always going to be a bit better to have drives that are basically the same size, however, this does help a bit when that's not the same case, such as when there's a slight mismatch in capacity between drives of the "same" size that aren't exactly due to rounding errors or if you want to replace a couple drives with larger disks while saving up/allowing for replication before placing the remainders in there.
 
cracauer@ said:
Apologies for the music.

There is a webinar on this tomorrow if you want a fresh feed:
klarasystems.com

Understanding AnyRAID: Architecture, Use-Cases, and Tradeoffs - Klara Systems

Join Allan Jude and Jon Panozzo to learn how AnyRAID mixed-drive storage unlocks more usable ZFS capacity, flexible pool expansion, and efficient mixed-disk layouts.
klarasystems.com
Click to expand...
In addition, after registering, I got an invite for FreeBSD After Hours AMA:
Join our post-conference
BSD discussion on June 30, 2026.

Following BSDCan 2026, Allan Jude and Kyle Evans are hosting a live Ask Me Anything session to break down the biggest FreeBSD, OpenZFS, and infrastructure announcements from the conference.

Bring your questions — this is an open discussion built for engineers in production environments.
Click to expand...
I think, these AMA's, will also appear later and be generally available, anyhow this should allow one to be there live as well.
 
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