ZFS: Difference between revisions
Created page with "How to use ZFS: ==Background== There are three levels to understand * zpools are a JBOD of one or more vdevs * vdevs are groups of drives, likely in raidz(2|3) or mirror. * d..." |
(No difference)
|
Revision as of 01:01, 7 November 2021
How to use ZFS:
Background
There are three levels to understand
- zpools are a JBOD of one or more vdevs
- vdevs are groups of drives, likely in raidz(2|3) or mirror.
- datasets are filesystems stored on a zpool
- z
Usage
# Create a zpool with a mirror vdev zpool create -f -o ashift=12 $zpool_name mirror \ /dev/disk/by-id/diskA \ /dev/disk/by-id/diskB
Pros and Cons
VS Snapraid + btrfs + mergerfs
- Pros
- ZFS has realtime parity.
- ZFS can work while degraded.
- ZFS snapshots with send and receive.
- ZFS has encryption on per-dataset.
- ZFS handles everything altogether including parity on permissions
- Cons
- The main con is that ZFS is less expandable. You need to buy all of your drives up front.
- If many drives die, i.e. >2 for raidz2, you lose all your data.