Hi, The NSS4100 storage system failed to start the raid10.
The message is:
Failed to start RAID
Please check that all components are present
All the disks are present as you can see in the attached image.The system has been restarted twice. Is there a possibility to start again the raid without losing data?
Hi Dan- Sorry for taking too long. I was busy with other project. Anyway, here is my answer to your problem:
Case # 1: If the disk is placed in the original when the RAID array was configured. Then a reboot and/or restore the saved configuration to the NSS will fixed the problem since the setting configuration will read the information from the disk to re-synchronize the RAID array.
Case # 2: There is a console access to internal hardware to get to Linux level (currently, we are not supporting to linux level). Under Linux command, user can run a sinple command to re-synchronized the RAID array.
I would recommend to call Cisco technical support and talk to them to see if there is anyway a SE can visit your office to help you out. Sorry for the problem that you have, I hope I could help you more but this issue needs to have someone physically there to help you out. I understand the data is very important to you so please call technical support.
I hate to say you have to do again from scratch, this means lost the data (no body like this).
There are number of way that you can configure for RAID Array (JBOD, RAID0, RAID1, RAID5, RAID5+Spare, and RAID10). I read from your posted, the system configured for RAID10. RAID10 is operated as a pair for data mirror.
Here is some RAID Array infor:
1) JBOD (No data protection, when your disk is bad. You lost all the data). The concept of read/write date is similarly to PC. Fast at first but the more data you have on the disk, it will eventually slow down.)
2) RAID0 (No data protection, however, write data to disk is better in performance. A disk is dead, then data are lost)
3) RAID1 (Data protection. A disk is dead. The other still operating and performance is degrading.)
4) RAID1+Spare (Similarly to RAID1, just auto-rebuild for RAID1 when a disk is failed)
5) RAID5: (Data protection. Minimum of 3 disks. Allowed one disk fails)
6) RAID5+Spare: (Data protection. Required 4 disks. Auto rebuild when a disk failed)
7) RAID10: (Data protection. Working in pair with disk in slot 1/2 is first pair and disks in slot 3/4 is second pair). This is important because disks in slot 1/2 can not be put into slot 3/4 if it already had the RAID10 information. The error I see from the GUI is look like the disk may have been moved or swapped around un-intentional.