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RND4000v2 - RND4000 NV+ v2 - Readynas Wont Switch On Boot Up
Hello All, I am hoping for some guidance here. I have a Readynas NV+ v2 that wont switch on or boot up. The power supply has a green light indicator on the inline transformer brick and there...
Detritusuk wrote:
Lets be clear too, that the main aim is to get the data off that's required from the drives. Configured as Flex Raid. 4 disks and single hard drive redundancy.
It should be possible to mount the RAID array manually in an x86 linux system.
You can also use RAID recovery software in a PC - R-Studio would work. You'd want the $79.99 version.
Note you can see if the software can access your data before purchase.
Hi Sandshark - thanks to your advice I have made quite a lot of progress towards recovering the data from my failed - ReadyNAS. I think I am tantalisingly close to getting R-Studio to read the data from my 4 drives
I was able to remove the drives, put them into external (USB) chassis and confirm that the drives all appear to spin up as expected.
Using R-Studio and heeding their advice in the manual I decided to avoid changing anything on the 4 drives and get R-Studio to re-create a virtual RAID. I am not 100% certain that I have labelled the drives in the correct sequence so have tried a number of options – I am reasonably sure that the sequence I am now using is correct and R-Studio seems to show that the physical integrity of the disks is good and shows green blocks across all the drives. It seems to be able to find lots of credible file names but I cannot load or read the content and the log file shows this MFT error.
`unexpected MFT record ...` and ending `... check raid for consistence`
The R-Studio support team have suggested I need to check the RAID 5 settings used by the NAS box. Please can you help me to define those settings for the ReadyNas?
It seems R-Studio needs the following - The current values it is using are in bold:
RAID Type: RAID 5
BlockOrderFor: Left Synchronous Standard
Parity Delay: Not used
First Parity:
No of rows: 4
Block size: 64 kb
My research suggests the block size may be the cause of error and that it should be "16 kb".
In parallel with work on the 4 drives I have also been experimented trying to resuscitate the Netgear chassis. Using 2 clean drives I have managed to reinstall the Netgear firmware on the chassis and it seems to be working as it should. I have not tried to reinstate the 4 drives into the chassis to see if it will fully recover the data and functionality – I recognise that there is a risk this will write new content to the drives and potentially corrupt the system further.
I think I am tantalisingly close to recovering the data, but am not sure what safe steps to take next. Any advice you can offer will be very much appreciated.
Unfortunately, I don't know what the correct parameters are. Typically, R-Studio can figure them out.
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