Creating a ZFS pool

vdev_id.conf

# General Settings
# My pool lives behind an IBM M1015 host bus adapter, which comes with
# two SAS ports, each of which supports four SAS or SATA disks. These
# settings apply to it.
multipath     no
topology      sas_direct
phys_per_port 4
slot          phy
# Aliases
# NOTE: **NEVER** use sda, sdb, sdc; these can change between boots.
# Use the disk's identifier instead, as it appears in `/dev/disk/by-id`.
# Once this is done, you can refer to devices in ZFS operations using
# the friendly aliases you've created.
# ALIASES     UNIQUE DEVICE IDS
alias trunk1  wwn-0x8000c40012345678
alias trunk2  wwn-0x8000c40081234567
alias trunk3  wwn-0x8000c40078123456
alias trunk4  wwn-0x8000c40067812345
alias trunk5  wwn-0x8000c40056781234
alias trunk6  wwn-0x8000c40045678123
alias system  nvme-eui.00123456789abcde

zpool-create.sh

# zpool create
# ZFS pool options (note lowercase `-o` flag):
# -o ashift=12                   # use 4K sectors
# -o autoexpand=on               # if all disks replaced, expand to fill new storage
# -o autotrim=on                 # performance: on for SSDs, off for spinning rust
# ZFS (first) filesystem options (note uppercase `-O` flag): 
# -O acltype=posix               # use unix-style access control lists
# -O atime=off                   # don't update access time for files when read (performance)
# -O compression=zstd            # use newer zstd compression
# -O xattr=sa                    # use system-available extended attributes
# -O dnodesize=auto              # if `xattr=sa` set and workload makes heavy use of xattrs
# -O normalization=formD         # unicode normalization
# -O com.sun:auto-snapshot=false # for zfs-auto-snapshot
# REQUIRED: pool mount point (note lowercase `-m` flag):
# -m /var/local
# REQUIRED: pool name
# trunk
# REQUIRED: Storage vdev; six spinning-rust disks in RAID-Z2 (RAID-6) configuration
# raidz2 trunk1 trunk2 trunk3 trunk4 trunk5 trunk6
# OPTIONAL: Cache vdev; partition on fast SSD 
# cache system-part4
# OPTIONAL: Log vdev; partition on fast SSD 
# log system-part3

zpool create \
  -o ashift=12 \
  -o autoexpand=on \
  -o autotrim=on \
  -O acltype=posix \
  -O atime=off \
  -O compression=zstd \
  -O dnodesize=auto \
  -O normalization=formD \
  -O xattr=sa \
  -O com.sun:auto-snapshot=false \
  -m /var/local
  trunk \
  raidz2 trunk1 trunk2 trunk3 trunk4 trunk5 trunk6 \
  cache system-part4 \
  log system-part3