Boot From Mirror Drive

[AlexRabbot]

Hi,

I am tryingh to boot up the server (Ultra 10) and getting the message: 'Can't open the boot device'. This server has 2 mirrored drives and no external drives. How difficult is to boot this server from the mirror drive (9.1GB IDE drive), then install the new 9.1GB drive and then remirror it? If anyone done this before, please post some steps how to do it.
Thanks in advance,
Alex

 

[comtec17]

How are you mirroring these disks?

 

[AlexRabbot]

I beleive mirroring was done using DiskSuite 4.1 RAID0, because the system was installed at the end of 1999.
I don't think RAID1 was used otherwise I was able to boot from the mirror drive, right?

Thank you,
Alex

 

[comtec17]

If you were using RAID0 then you were not protected via a mirror, you were stripping your disks. In a RAID0 configuration, if you lose one disk it could be a "game over" scenario. I have personally experienced the pain of running RAID0 and will never do it again since there is no parity or mirroring.

I hope someone else here could shed some light on this to help you out.

Best of luck....

 

[AlexRabbot]

Comtec17,

Sorry, I made a mistake. It's not RAID0. Mirroring was done using RAID1. I have two disks. In case of RAID1, could you please let me know how to boot the system from the miirrored disk?

Thanks,
Alex

 

[mikeclark]

Run printenv from the OK> prompt, look for the entry boot-device, this is often set to disk. If so try boot disk1 which is what the mirror would probably be set to (if it is setup as a boot device)