Truenas Scale - how to use same device as cache VDEV in two pools at the same time

Truenas Scale - how to use same device as cache VDEV in two pools at the same time

Truenas 25.04 CE used for this guide TrueNas philosophy is “1 device - 1 assignment”. So by doing this we are going off-piste and who knows what could happen. Please proceed only if You have backup of Your data and You know what You are doing. Identify the SSD with the command lsblk For instance: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 10.9T 0 disk └─sda1 8:1 0 10.9T 0 part sdb 8:16 0 3.6T 0 disk └─sdb1 8:17 0 3.6T 0 part sdc 8:32 0 3.6T 0 disk └─sdc1 8:33 0 3.6T 0 part sdd 8:48 0 3.6T 0 disk └─sdd1 8:49 0 3.6T 0 part nvme1n1 259:0 0 119.2G 0 disk ├─nvme1n1p1 259:1 0 1M 0 part ├─nvme1n1p2 259:2 0 512M 0 part └─nvme1n1p3 259:3 0 118.7G 0 part nvme0n1 259:4 0 953.9G 0 disk └─nvme0n1p1 259:5 0 951.9G 0 part nvme2n1 259:6 0 238.5G 0 disk we’ll take the example with nvme2n1 and we’ll use the parted command for it: ...

June 20, 2025 · 4 min · Edvard
How to optimize Mikrotik router for WiFi

How to optimize Mikrotik router for WiFi

Mikrotik produces powerful equipment for advanced users with affordable prices. It’s similar to Linux in a way - you can modify almost anything, but don’t expect it’s going to work good out of a box. When I’ve bought MikroTik hAP ax³ I was disappointed with low performance and lack of band steering (devices were stuck on 2.4 Ghz if got connected to it). After quite some sleepless evenings I got it working in a good way, so clients have decent speed, connect to 802.11ax and use widest band width (there were problems with intel AX210, that some devices would not connect to 802.11ax but use 802.11n, some would use only 40mhz instead of 80mhz, and some would ignore 5Ghz completely). ...

May 30, 2025 · 4 min · Edvard