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Forum Discussion
how do I read data from a removed Duo V2 disk
I just updated my ReadyNAS Duo V2 to dual 2TB red disks, removing a 1TB Barracuda. It occurred to me that this was a good opportunity to test ReadyNAS data recovery, using the Barracuda. I put the 1TB in a USB enclosure and connected it to a Ubuntu 12.04 notebook, but it did not auto-mount.
I have searched this forum for instructions but all I could find were for SPARC-based units. There said to install and use "fuseext2' and 'lvm2". Are the Duo V1 procedures apply to the Duo V2?
I only thought that this was a good time to try something that I might need for myself or some one else in the future.
I have searched this forum for instructions but all I could find were for SPARC-based units. There said to install and use "fuseext2' and 'lvm2". Are the Duo V1 procedures apply to the Duo V2?
I only thought that this was a good time to try something that I might need for myself or some one else in the future.
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- I removed the disk from the USB enclosure and installed it in a PC as the only SATA drive. I then booted the PC with a Knoppix 7 live CD. It did not show up in Knoppix although it was recognized by the BIOS.
My Linux is limited (as are most PC users) so I believe that I must manually mount the disk. So more research.
It seems like getting to data on a disk that has been removed from a ReadyNAS is not as simple as I would have believed. - I would use http://www.ext2fsd.com/ and try mounting the disk in Windows. There are also multiple different utilities to recover data, TestDisk should work fine on a single RAID1 member.
- There is a good article on Cnet regarding access to ext2/3 drives from Macintosh systems:
http://reviews.cnet.com/8301-13727_7-57457850-263/how-to-manage-ext2-ext3-disks-in-os-x/ - This might help (it worked for Duo v1):
viewtopic.php?f=11&t=35153&p=384437&hilit=read+disk+in+pc#p384437 - The disks in the Duo v2 use the EXT4 filesystem. The process is quite different to what is used for the Duo (v1) units. There is no need for fuseext2 as the Duo v2 uses the standard 4k block size.
You would need to start the RAID using mdadm (you may need to install this via apt-get), do a vgscan, vgchange -ay etc.
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