adding two existing hdd (raid1 from NAS) to proxmox zfs

[ap20132022]

hi everyone,
I'm new here.
I have proxmox installed on a fujitsu i5, 8Gb RAM, 257Gb SSD. And I have a zyxel NAS with two HDDs each of them has 3Tb (configured as RAID1).

I want to move my two HDDs to my fujitsu and configure them over ZFS.

Today I tried to copy (backup) all my data from my 3Tb HDD to my Laptop. After a while searching and trying I can connect one of my RAID HDD to my laptop and copy files to my laptop. I used mdadm and lvm2 to do it. Now my laptop recognize it as

3TB eexxtt44
RAID Member

Next step: I want to connect these two RAID1 HDD to my proxmox. How can I do it?

I think the easiest way is format the HDD and connect them as new HDD. But I have to copy all the backup files from my laptop to the hdd again. I don't know whether it possible to keep all the files on my HDD and just change it from RAID1 to ZFS. I think it's difficult (my "experience: it was not so easy for me to connect this Raid HDD to my laptop and backup files. But it's possible ). And I know the risk. That why I have backed up all files to my laptop.

(my fujitsu mainboard doesn't support Hardware RAID)

Thank you very much for your advice and have a nice weekend.

 

[Richard]

I don't know whether it possible to keep all the files on my HDD and just change it from RAID1 to ZFS.

Not possible, ZFS RAID and hardware RAID are different technologies.

 

[alexskysilk]

Next step: I want to connect these two RAID1 HDD to my proxmox. How can I do it?

Most likely the zyxel nas is just a small embedded linux box. just attach the disks to your proxmox host, and then-

pvscan
vgscan
vgs (to obtain the VG name)
vgchange -ay [vg from above)

(you may not need to do any of the above if the vg activates automatically- this may happen if you attach both disks at once.)

then you can mount the resulting logical volume as you please in proxmox.

 

[ap20132022]

Thank you very much for your answer. After reading your advices and information from internet I decided to apply:
- I wiped up one of my two 3Tb HDD Raid1 and put it to zfs pool als single disk
- I connected the second disk to my proxmox
(see screenshot: sdb is my 1.disk and sdc is my 2. disk)

Now I want to copy all the data from the second disk to the first one (which now als single disk on zfs pool).
Next steps: after copying all the data, I want to wipe up the second disk and use "zfs attach" to add the second disk to my zfs pool. I hope that the 2. disk will be resilverd with data from the 1. disk

Question:
- what do you think about this process?
- how can I copy the data from the second disk (which has Raid1 from NAS) to the first disk (now empty on zfs pool)? I want to connect the second disk directly to proxmox and use "mdadm and lvm2" to access to this disk. Is it possible?

Thanks again for your help and have a nice weekend.