NETGEAR is one of the well-known NAS vendors.
Inside its ReadyNAS devices disks are combined into a RAID and used to store data, plus provide a variety of other storage-related services.
All these functions are controlled by a Linux-based operating system inside the NAS, which NETGEAR calls “NAS OS”.
NETGEAR devices can be divided into two groups.
The first group includes the devices released before 2013 with operating system versions prior to NAS OS 6.
In these "old" NETGEAR devices data storage is organized
in the following way – disks are cut into partitions which are combined into a RAID with md, and then md-arrays are combined into a single LVM volume.
As for filesystem, Linux ext4 is used in such configurations.
The second group includes devices that use NAS OS 6, released in 2013 or later.
In modern NETGEAR NASes data is stored in another way. Disks are still combined into a RAID using md, but the next level is BTRFS filesystem rather than LVM.
How to recover data from a NETGEAR ReadyNAS
If your ReadyNAS does not work you can recover data from it using ReclaiMe File Recovery. Note that ReclaiMe is able to recover data from NETGEAR devices using
either ext 4 or BTRFS. So to recover data you need:
- Pull the disks out of the NETGEAR and connect them directly to a PC running Windows. If possible, use SATA ports on the motherboard, although USB is acceptable as well.
- Download and launch ReclaiMe File Recovery software.
- Select NETGEAR "disk" in the device list of ReclaiMe. Look for your NETGEAR device either under Linux LVM volumes section (older devices) or under BTRFS section (newer devices).
- Wait until ReclaiMe File Recovery brings up data. Usually, you need to wait till 3-4% of the scan. Check the files and folders and if you are satisfied with the result, click the Save button and start copying data; otherwise, wait to see if more data is recovered.
All the steps on video