Add disk 2 zfs RAIDZ2-0

[itNGO]

Good morning,

I try to get some information about the possibility to expand an RAIDZ2-0.
Is this already possible, besides it might degrade performance?

So can I add another 2 identical disks to the pool shown here, without recreate?

root@TANK:~# zpool status pool: rpool state: ONLINE config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_3190A00XFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A04NFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A01WFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A018FVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A00BFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_3190A03UFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A042FVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A03BFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A02SFVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_31A0A038FVNG-part3 ONLINE 0 0 0 ata-TOSHIBA_MG08ACA16TEY_21A0A0C1FVNG-part3 ONLINE 0 0 0 special mirror-2 ONLINE 0 0 0 nvme1n1p2 ONLINE 0 0 0 nvme0n1p2 ONLINE 0 0 0 logs mirror-1 ONLINE 0 0 0 nvme1n1p1 ONLINE 0 0 0 nvme0n1p1 ONLINE 0 0 0 cache nvme1n1p3 ONLINE 0 0 0 nvme0n1p3 ONLINE 0 0 0 errors: No known data errors

 

[LnxBil]

So can I add another 2 identical disks to the pool shown here, without recreate?

No, that is not yet possible.


You have special device, slog and L2ARC all on one disk? How does that perform?

 

[itNGO]

No, that is not yet possible.


You have special device, slog and L2ARC all on one disk? How does that perform?

It performs very good for our usecase. We use the host to have PBS and VEEAM-VMs on it. So it is more or less a big TANK for Backup.
About 200TB usable Storage. But we will see in the next weeks... just 10% data on it so far.... IOWAIT is below 1% all the time....