On 19-12-2021 23:07, Wol wrote:
On 19/12/2021 21:11, David F. wrote:
Thanks, the strange thing is it's seeing the physical drives (I
understand when the drives don't show up but once the drives show up
mdadm was agnostic), it's not not seeing the RAID configuration, the
customer says "First two are raid one and second set of 3 drives are
raid 5"?
Could it be the customer configured (or thought he did) the drives as
hardware raid in the BIOS, and then it's fallen into JBOD mode? Or is
linux bypassing the raid hardware somehow?
It's probable (in fact, very liklely) that linux doesn't recognise the
HP raid format, unless it's IMSM.
Cheers,
Wol
I suspect this is the S100i Smart Array controller. This is a SW raid
controller which only has a windows driver.
When you enable the raid in the BIOS the embedded raid manager lets you
configure a raid config that windows will recognize (with the driver
installed). Linux will only see the component disks and probably
actually get into trouble with the S100i enabled in RAID. That at least
is my experience with the comparable software raid on a gen8.
If no data / OS on the system, better to disable the SW raid and use
mdadm on the base disks
Cheers
Rudy
