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Drive swap with impact to volume1

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2
0
NAS
DS920+
DS920+ with current storage config:
  • Storage Pool 1: 2x10TB, RAID1, volume1, ext4
  • Storage Pool 2: 2x6TB, RAID1, volume2, btrfs
Goals:
  • Replace 2x6TB with 2x14TB
  • Convert to a single SHR-1 storage pool with a single volume that uses btrfs file system
I would be able to fit all of the data on both current volumes onto a single 14TB drive.

What's the best way to make this happen without having to re-do all my packages (all the @ folders are on volume1)?
 
Last edited:
Does all data fit on the 10TB? That would make conversion less painful,
Synology can only expand with the bigger disks, so you need to start with the 6 or 10TB.

Both pools need conversion and I am not aware of a supported way to do this without "redoing" all packages. You will have to HB them and restore on the new volume (this is not too difficult anyway).

You can export all data to USB and restore, and HB the packages to USB as well, that is probably what most people would do.

I think my path would be something like this, as internal move is so much faster than USB export/import:
The process is basically meant to first have all the data on one 14TB disk, and then create an SHR1 from the existing disks.

0) make sure your backups are done. This process moves data and there is no redundancy during the process.
1) pull the two 6TB disks from a properly shutdown system.
2) Install one 14TB in a basic volume, BTRFS
3) Move (using shared folder location change!) all your shared folders from the 10TB to the single 14TB
4) HB the packages to the 14TB as well, you may also export system settings to be on the safer side.
5) shutdown
6) Pull the two 10TB
7) Startup and make sure the NAS works and contains all the data and HB backups
8) shutdown and add again the 2 6TB disks as a separate pool, make sure these are imported as existing disks!
9) Move (using shared folder location change!) also all your shared folders from the 6TB to the 14TB
You should now have a working NAS with all your data on one single 14TB disk

10) Now you can setup the final SHR1:
e.g. you want the SHR to be 10+10+14+14:
Start adding 10+10+14, initialize it as new pool with one volume SHR1 BTRFS.
11) Then move back all the shared folders to the newly created SHR1, and restore the HB with packages.

12) Finally add the last 14TB that is now empty to the SHR to get 10+10+14+14

A lot of work, with plenty of opportunities to lose your data so take care!
 
On your first comment on all data fitting on 10TB, let's assume for sake of discussion the answer is yes. Heck, let's assume the 6TB drives aren't in the chassis. There's still no way to avoid having packages bounce between volume1/volume2, correct? I think the process would look like this:

1) Add 2x14TB into empty chassis slots and create new SHR-1 pool as volume2, btrfs
2) Copy all data and HB backup/restore packages from 2x10TB volume1 to new 2x14TB volume2
3) Delete volume1 and 2x10TB pool
4) Create new 2x10TB SHR-1 pool with new volume1, btrfs
4) Copy all data and HB backup/restore packages from 2x14TB volume2 back to newly created 2x10TB volume1
5) Delete volume2 and 2x14TB pool
6) Add 2x14TB drives to 2x10TB SHR-1 pool, expand

The data would never exist on a single drive at any point in time, which is what I'd like to avoid in this process.

As far as the 6TB drive's, I think I would just pull 1 drive from the RAID1 and connect via USB, then copy from the degraded RAID1 to the externally connected 6TB drive. I would obviously do this before the steps above. After I get the new 4 drive SHR-1 pool completed, I could copy the data from the external 6TB to the SHR-1 volume.

I realized I have a number of custom packages (SynoCommunity) that HB doesn't see. Instead of using HB to restore packages, could I just stop all packages and then copy all the @ folders between the volumes, and then start packages once it's all done? I could still HB backup the native packages for safety and use any internal backups available for custom packages.
 
Yep, and indeed the process is simpler in case all data fits on a 10 tb volume.
The apps swap: it is unsupported I have no experience doing it like that,
You use the word copy for the data transfer; I recommend to move the folders by using location change. Copy is way slower.
 
Last edited:
I recommend to move the folders by using location change. Copy is way slower.
Move the Shared Folders in Control Panel > the Shared Folder > change Location field ;)
 

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