On Nov 30, 2011, at 1:39 PM, m.roth@5-cent.us wrote:
Ross Walker wrote:
On Nov 29, 2011, at 3:35 PM, m.roth@5-cent.us wrote:
I've got two drives from a now-dead server, they were RAIDed, a mirror, I'd assume. I need to see if there's anything on them I need to transfer to the replacement, so I just shoved them into another Dell server, with a PERC 5 controller - I think that's what the dead one had. I fired up MegaRAID storage manager... but can't see any way to tell it to recreate that RAID. Anyone done this?
Probably old news now, but in the PERC card's BIOS you want to import foreign config, save it and restart.
Ok, no one else was using one of the two I have available (most are now surplussed, so there's only a few left in service) is not being used at the moment, so I rebooted, and went into the firmware. Foreign was greyed out, unreachable, no matter what I did.
We're probably writing the drives off - there *shouldn't* be anything to be recovered on them, but I was just tryin' to be sure....
It may be the drives were software mirrored? Or maybe mirrored with a different controller like a PERC 'i' which works differently then the 'e' controllers.
I have heard of people setting their PERCs in pass-through mode and doing software RAID, or setting the drives up as a bunch of single disk RAID0 drives and doing software RAID, so I wouldn't rule it out.
See if there is a partition table on the disks or a whole disk LVM VG.
For my own amusement, I installed MegaCli 4, and am trying to puzzle my way through the lack of documentation, only the output of MegaCLI64 -?....
The MegaCli is the most archaic utility.
I have a storage server in one of my datacenters that has a PERC 6i and two PERC 6e controllers and I use a combination of MSM framework and MegaCli to manage it.
I'll do an rpm dump when I get a chance and list the Dell/LSI packages installed.
-Ross