Solved

Windows 2008 Server+Raid 1+Data loss

Posted on 2014-02-03
7
210 Views
Last Modified: 2016-12-08
Hello

the strangest event happened with my Windows 2008 Server. It got 6 disks, groupped by two in Raid 1 Array - Mirror (that's 3 usable logical disks). The mainboard uses two raid controllers so four of the disks are in one controller and two in the second one.
One morning the system was displaying the Loading Operating System text but did not purceed to loading the OS.
Rebooting a few times the system and the raid controller with 4 disks gave a different errors that the raid matrix is faulty/rebuilding/ or distroyed. In the end (just reboot/check the cables), I have reached the windows repair option, run the checkdisk on the system disk but nothing, the OS could not overpass the repair option. Checkdisk made corrections, fixes.
At that point I have connected the disks individually to another computer (using a usb/sata converter). The problem is that I cannot find all the data that was stored on the disks. Running Easus Recovery did not gave different results. *the four disk controller was reporting Rebuild status on the matrix, so on a new disk I have installed windows and Intel Raid controller software to do this. I have only rebuild one pair (two disks) but the information was not the most recent one and some was missing.
At this point I've reached the conclusion that the first controller has done something bad, I've left the other pair of disk untouched (other that scan with Easus) but I need the information that was stored on them. Might be that the raid sync was lost at some point even thou the disks show the same data if I check them individually.
I need advices on what to do next, my fear that connecting these two raid matrix disks to the system and running the rebuild of the matrix will lead to losing my data forever and as usual that data is important.

*none of the disks are failing (phisically)
*the second controller seems to have done it's job, those two disks connected to it are untouched by the data loss
*windows was runing the "Previous Versions" feature


thank you,
cosmin
0
Comment
Question by:Cosmin Curticapean
  • 4
  • 3
7 Comments
 
LVL 19

Expert Comment

by:Kash
ID: 39829158
hi,
   you have mentioned you tried to connect disk individually. I hope you didn't initialize them as you would be stuck because as they were the part of a RAID, the data alongwith config info would have saved on RAID and booting them separately would have broken the RAID. In that case you have lost everything.

I take it you had a software RAID of some kind. Looks to me like some kind of corruption and either it got corrupted or destroyed. Again, you are back to square one. Either rebuild the RAID and then recover data from the backup if any.

I would suggest you have a hardware RAID instead of a software one. Good luck
0
 

Author Comment

by:Cosmin Curticapean
ID: 39829167
if you refer to the windows initialization (from Disk Management), I didn't go there, the disks were available just by connecting. The RAID is for sure software based. Basically the repair option is the only one that could (by a mirracle) recover the data, even thou individually the disks show no trace of the data?
0
 
LVL 19

Expert Comment

by:Kash
ID: 39829268
it is definitely a software raid if you could see in disk management.

Has the repair option done any good so far.

is it a production server and if yes, have you got the backup ?
0
Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

 

Author Comment

by:Cosmin Curticapean
ID: 39829276
some of the backup exists, some doesn't. the data is huge (500GB) and i have incremental backup done on the system onto separate media.
The repair option did not do any good on two disks, on the other two, that were hit harder I didn't performed yet. I was saving them till the best solution comes. (maby data recovery software).
0
 
LVL 19

Expert Comment

by:Kash
ID: 39829477
good luck with that. I am not sure if data recovery software will do any good in case of a RAID setup. I will be interested to find out about that.

I would jot a brand new RAID and start the restore from the backup.
0
 

Accepted Solution

by:
Cosmin Curticapean earned 0 total points
ID: 40332104
closing: the information was lost, took the drives to two different data recovery companies. Also the cause of this was undetermined. Guess is that the software controler caused this, but, like I said is just a guess.
0
 

Author Closing Comment

by:Cosmin Curticapean
ID: 40338637
-the information was lost.
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
In 2017, ransomware will become so virulent and widespread that if you aren’t a victim yourself, you will know someone who is.
To efficiently enable the rotation of USB drives for backups, storage pools need to be created. This way no matter which USB drive is installed, the backups will successfully write without any administrative intervention. Multiple USB devices need t…
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question