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#1 2009-01-06 06:02:46

xpertise
New member
Registered: 2009-01-06
Posts: 1

RAID 1 Drive Mapping Lost after Power Down and No Longer Available

We purchased the DNS-323 and two 500gb Seagate drives as the primary network storage device for our business.  We set them up as Raid1 thinking that we would now have shared access across our network for all PC's and have a backup.  WRONG!

Everything was fine until I powered down the device for a day.  When I powered it back up the drive volumes were no longer mapped or available, the Easy Search Utility recognized the device, but the drives were not listed for mapping.

After several hours on the phone with DLink support, including multiple disconnections and questionable senior tech's, the solution given is as follows:

- Remove both drives from the DNS-323
- Set them as slaves
- Install them into a Linux box (which we don't have)
- Backup the data to another storage device
- Reinstall the drives back into the DNS-323 and then reformat

Although this may get the device working properly again, the critical issue here is the business critical data that we now have concerns about being lost forever.  Not a good way to start off the year.

All of the standard technical support knowledge base book has been read to me over the phone verbatim several times. (reset, remove and reinstall drives, close and re-open the easy search utility, etc.)

If anyone has any creative idea how to reconfigure the DNS-323 to recognize the original drives for mapping not re-formatting, how to recover the folders and files within or some other creative idea, it would be greatly appreciated.

Lesson Learned: the DNS-323 is not a backup storage device and it is Linux based.  Therefore the drives cannot be mounted in a Windows based PC for recovery. 

PS - I bought a 3rd 500gb Seagate drive to house all of the data in yet another location as a backup.  It is currently blank and available for any potential solutions.

Thanks in advance for any assistance!

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#2 2009-01-06 11:06:19

mig
Member
From: Seattle, WA
Registered: 2006-12-21
Posts: 532

Re: RAID 1 Drive Mapping Lost after Power Down and No Longer Available

xpertise wrote:

Lesson Learned: the DNS-323 is not a backup storage device and it is Linux based.  Therefore the drives cannot be mounted in a Windows based PC for recovery.

Sorry to hear of you situation, but there still may be hope to recover your data...

The drives of the DNS-323 are formatted as an EXT2 file system.
There is an free driver software (http://www.fs-driver.org) that allows you to mount
EXT2 drives on a WindowsXP system.

There are also bootable Linux Live CDs (http://www.knoppix.com) that will boot (almost)
any PC into a Linux system without installing anything on the PC.  Linux runs from the CD,
and there are no changes to the original PC drives.  Remove the Linux Live CD and reboot
to the original OS.  This is an easy way to get a temporary a Linux PC.

If your DNS-323 drive is recognized on a computer system by either of the above two methods,
then you could backup the data.

What is the state of the blue lights on the front of the DNS-323 when you power it up?  Are any
light flashing?  Are any lights amber/pink/white (not blue)?

Lesson (that should be) Learned: RAID1 is not a backup.
RAID1 will ONLY protect your data from a single hard drive failure.  What happened to your DNS-323
is really not clear at this point, but it is definitely NOT a single hard drive failure.

Last edited by mig (2009-01-06 11:07:05)


DNS-323 • 2x Seagate Barracuda ES 7200.10 ST3250620NS 250GB SATAII (3.0Gb/s) 7200RPM 16MB • RAID1 • FW1.03 • ext2 
Fonz's v0.3 fun_plug http://www.inreto.de/dns323/fun-plug

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