ZFS Pool Configuration – core-pool
Quick-view matrix
| Setting |
Value |
Notes |
| Pool name |
core-pool |
Single-disk lab pool |
| Vdev layout |
1 × stripe |
4 TB USB HDD |
| Sector size |
ashift=12 |
4 KB alignment, good for SSD/HDD |
| Compression |
lz4 |
Default for SCALE |
Prerequisites
- TrueNAS SCALE Web UI available
- A spare disk visible as
/dev/sdb (4 TB USB HDD)
- No important data on that disk – operation is destructive
Step 1 – Create the pool (CLI)
zpool create -f -o ashift=12 core-pool /dev/sdb
Step 2 – Enable compression
zfs set compression=lz4 core-pool
Validation
zpool status core-pool
zfs get compression core-pool
