Delete a ZimaOS RAID: Stop Shares Before wipefs

Bottom Line: Stop Shares and Services Using the RAID Before You Try to Delete It

The user thought the RAID itself could not be removed. The actual blocker was simpler: the Samba share was still active. Once the share was disabled, the array could be deleted without immediately resorting to low-level wiping.

Use the ZimaOS Storage UI Before Destructive CLI Tools

Current ZimaOS supports RAID 0, 1, 5 and 6 through the storage workflow. If the array is still managed by ZimaOS, remove dependent shares/apps first, then use the Storage UI for the layout change. The current ZimaOS RAID guide is the supported baseline.

The ZimaOS RAID recovery guide is worth reading before touching a disk that may still contain needed data.

wipefs Is a Last Resort Because It Removes Filesystem and RAID Signatures

lsblk -f
findmnt
sudo umount /dev/DEVICE_PARTITION
sudo wipefs -n /dev/DEVICE   # inspect signatures only

Start with wipefs -n, which lists signatures without erasing them. The wipefs manual explains the destructive and no-act modes. Use actual erase operations only after data is backed up and the device identity is verified.

Creating a New RAID Erases the Old Storage Layout

If the drives contain anything important, copy it elsewhere and verify the copy before deleting/recreating the array. RAID protects against some disk failures; it is not a backup.

The ZimaOS backup guide provides the safer pre-change workflow.

What About Using NVMe as a Cache?

The source thread also asked about bcache/dm-cache. Current public ZimaOS docs do not expose a supported one-click SSD cache layer for an HDD RAID. Linux does have advanced block-cache technologies, but manually inserting one underneath a ZimaOS-managed array changes the storage architecture and recovery path. The kernel's bcache documentation is the technical reference if you intentionally build that advanced setup.

Prefer SSD for App Data Before Adding a Block Cache

For many home servers, keeping Docker/app databases on SSD and bulk media on HDD gives most of the practical responsiveness benefit with a much simpler failure model. The ZimaOS data migration guide supports that design directly.