New answers tagged raid5
Depending on what is running on your server, this may or may not be feasible. You can try to do an in place upgrade of your Server OS. You should be able to upgrade to Server 2008, and then you can proceed to extend the system partition. One gotcha to be aware of is that you can only upgrade Server 2003 32bit to Server 2008 32bit.
You should acquire new hardware and install a modern operating system like Windows Server 2012 R2 and then migrate your applications and data to it. Windows Server 2003 is quickly approaching end of support and you should be focusing your effort on getting off of it, not on rigging it to keep on running.
Still, two drives down in a RAID 5=game over Sad, but true
Problem solved, the lastest drivers (9.5.4) made problems - tried 9.5.3 which the support sent to me - they worked. Still have to try 3DM2 if it's working now.
Had the same issue with almost the same setup. The Perc S110 software raid is horrible and when you are throwing in parity it is even worse. To Fix this issue i recommend changing it to a Raid 10. It Flies after the change but you will have to back everything up...
mdadm -Ac partitions -m 0 /dev/md0 Scan all partitions and devices listed in /proc/partitions and assemble /dev/md0 out of all such devices with a RAID superblock with a minor number of 0. if the conf was successful you can add --detail --scan >> /etc/mdadm/mdadm.conf so it catches it on boot
My theory is that the power supply to the drives can't handle the load. When you issue the grow order, all the drives in the array have to start doing real work. This consumes more power. The power supply can't deliver and the voltage to the drives dips. Once the voltage gets too low, their motors shut off briefly - causing the clicking sound as their heads ...
To answer your questions, Can it be restored? First thing's first - STOP, sit back and just think a little. Yes, algorithm, chunk size and disk order is vital to getting whatever filesystem that was present, to properly re-assemble. But since you've overwritten the superblocks, you're now left with trial and error. Second, is there any way you can ...
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