EDIT - 20201206 @ 2216 UTC-7 - Added how to remove a hard drive and replace it with a bigger one to upgrade.

EDIT - 20200311 @ 1859 UTC-7 - Added how to replace a dead hard drive in a btrfs pool.

EDIT - 20191104 @ 2057 UTC-7 - Figured out how long it takes to scrub 40TB of disk space.  Also did a couple of experiments with rebalancing btrfs and monitored how long it took.

A couple of weeks ago while working on Leandra I started feeling more and more dissatisfied with how I had her storage array set up.  I had a bunch of 4TB hard drives …

A couple of weeks ago, HacDC added a new tool to the workshop, a laser cutter from Full Spectrum (which, I've just discovered, was a Kickstarter campaign). We've been saving up for it for a while, but one of the nights I was there I got to see its unboxing and (with the permission of the folks there) I took some pictures.

Here they are.