topic Re: DL380-G5 with P400-512 and linux MD in Operating System - Linux

DL380-G5 with P400-512 and linux MD

lcaron — Thu, 15 Mar 2007 10:00:37 GMT

Hi,

I just god a new DL 380 G5 with a smart array P400-512.

I want to use the linux software raid capabilities (aka md) on it.

When i boot linux i only see disks under /dev...cciss.....

How do i get /dev/sda, /dev/sdb ....?

Thanks

Laurent

Re: DL380-G5 with P400-512 and linux MD

Ivan Ferreira — Thu, 15 Mar 2007 16:54:46 GMT

Why do you want to use linux software raid if the smart array controller provides "hardware based" array capabilities?

You can check the configuration or modify the configuration using Array configuration utility, included in the smart start CD.

Re: DL380-G5 with P400-512 and linux MD

lcaron — Fri, 16 Mar 2007 02:15:17 GMT

The face is I don't want to use hardware raid.

Should the hardware controller goes bad, i want to be able to move the disks to another server (another brand/controler) without any hassle.

Laurent

Re: DL380-G5 with P400-512 and linux MD

Ivan Ferreira — Fri, 16 Mar 2007 09:34:33 GMT

With smart arrays, you can physically move the disks to another controller and the configuration will be picked up from the disks. The new controller will retain the raid configuration.

Re: DL380-G5 with P400-512 and linux MD

lcaron — Fri, 16 Mar 2007 09:37:07 GMT

What will happen if i move the disks to a non hp server with a non hp smart array card ?

Re: DL380-G5 with P400-512 and linux MD

lcaron — Tue, 20 Mar 2007 09:22:07 GMT

i'm wondering about the partitions, data ....

Re: DL380-G5 with P400-512 and linux MD

Ivan Ferreira — Tue, 20 Mar 2007 09:38:35 GMT

>>> What will happen if i move the disks to a non hp server with a non hp smart array card ?

In that case, I'm not sure, but probably you won't be able to read the RAID configuration and you won't be able to boot.

But I think that this will be a disaster situation, in which case, you probably need to have another recovery option, like a system backup using mondo rescue, that allows you to restore the system image to a different physical disk layout.

Re: DL380-G5 with P400-512 and linux MD

lcaron — Tue, 20 Mar 2007 09:46:31 GMT

hmmm, the aim of using software raid is to be able to put the disks in another server (even non hp one).