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T2000 Hardware RAID

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Operating Systems Solaris T2000 Hardware RAID
# 1  
Old 04-15-2009
T2000 Hardware RAID


I have a root with hardware RAID on c0t0d0 and c0t2d0. I would like to set the boot device sequence in OBP for both hdds.

I have checked in ls -l /dev/rdsk/ for the path of c0t2d0 but it does not exist. Can anyone shed some lights on this?

0. c0t0d0 <LSILOGIC-LogicalVolume-3000 cyl 65533 alt 2 hd 16 sec 273>

# 2  
Old 04-15-2009
it is a hardware raid... the os can only see one disk. so everything is ok.
# 3  
Old 04-15-2009
if you did raidctl -c c0t0d0 c0t2d0
The result will be that the OS will only see c0t0d0 from format.
# 4  
Old 04-15-2009
I am planning to patch my system and unplug disk0 as fallback plan. My concern is whether it will crash my system by the time i boot from disk2? I only have /pci@780/pci@0/pci@9/scsi@0/sd@0,0 (disk0 path) in my OBP boot-device. Would it be suffice as there isn't any disk2 path available.
# 5  
Old 04-16-2009
Its hot-swappable. You can just pull out the disk while the system is running or you can bring the system down to the OK> prompt then pull out the disk you want to.
# 6  
Old 04-16-2009
Thanks incredible, the disk swapping is working fine.

By the way, will OBP's delete-volume work in detaching the hardware mirror while preserving the data?
# 7  
Old 04-17-2009
yes, it will.. but your purpose of h/w raid is to minimize downtime or i would say, 0% downtime right? so no reason to go to OBP level at the 1st place

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