Filesystem: ZFS (RAID1) vs ZFS (RAIDZ-1)

[titan.boreal]

TL;DR
ZFS RAID1 vs RAIDZ-1?

Hello comrades,
After a long trip with Proxmox 6 its time to move on to 7 now.
Trying a new clean install i found the BTRFS implementation (not interested for now) and an old intrigue that I could never answer.

-Why on the Filesystem options i get options like ZFS (RAID) and ZFS (RAIDZ)?
-What differences i have using ZFS RAID1 vs RAIDZ-1?
-Is any better than the other one to avoid boot errors?

ps:- Why Proxmox only makes ZFSs by Name (sda, sdb, etc.) and not by disk id?

When I select any of them the menu bellow is exactly the same so i couldn't found any clue.

Here i only want 2 "cloned" disk for the main OS.
After installing i usually make some other pool (for LXCs and VMs) by shell to make it by disk id.

Thanks in advance.
Rgrds.-

 

[oguz]

hi,

-Why on the Filesystem options i get options like ZFS (RAID) and ZFS (RAIDZ)?
-What differences i have using ZFS RAID1 vs RAIDZ-1?
-Is any better than the other one to avoid boot errors?

check our wiki page about zfs on linux [0], you'll find the answers you're looking for.

in general the more redundancy you have in your disks the less chance of losing data to corruption.

ps:- Why Proxmox only makes ZFSs by Name (sda, sdb, etc.) and not by disk id?

do you mean you want to see the disk uuid on the list?

[0]: https://pve.proxmox.com/wiki/ZFS_on_Linux#_installation_as_root_file_system

 

[titan.boreal]

[0]: https://pve.proxmox.com/wiki/ZFS_on_Linux#_installation_as_root_file_system

Thanks! very useful.
Cannot believe i didint find it there before. I always believe that RAIDZ-1 is the same as RAID-1 but without a proper raid interface.

do you mean you want to see the disk uuid on the list?

Its more like "how the zfs its created" than a "seleccion view".
For example, my old proxmox v6 srv the os "rpool" its created by id.


If i created a new pool by Proxmox GUI it gets by SD* example:


So if i want to create a pool by disk id to avoid any SD* mixing problem or easier disk error troubleshooting i have to created by shell zpool create [PoolName] -o ashift=12 raidz2 /dev/disk/by-id/ata-WDC_W... /dev/disk/by-id/ata-TOSHIBA_H... /dev/disk/by-id/ata-WDC_W... /dev/disk/by-id/ata-ST1000...


Thanks