* RE: Swap RAID controllers
@ 2011-07-10 20:26 Dermot Paikkos
2011-07-10 22:01 ` terry white
0 siblings, 1 reply; 6+ messages in thread
From: Dermot Paikkos @ 2011-07-10 20:26 UTC (permalink / raw)
To: linux-admin
----- Original Message -----
>
That all depends on the make, model, and system in use, doesn't it?
Does it? My first thought was that the array configuration was stored on the EPROM on the controller. Take the card out and you loose the config.
For what it's worth, the card manufacturer is HP. The existing model is a P212 external SAS controller. The server is a HP Proliant DL165 G7. The host of is CentOS with a 2.6.18-194.17.4.el5xen kernel. I haven't seen anything in their documents that would suggests swapping controllers is possible or not. It simply not a question that the docs address.
Dp.
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: Swap RAID controllers
2011-07-10 20:26 Swap RAID controllers Dermot Paikkos
@ 2011-07-10 22:01 ` terry white
0 siblings, 0 replies; 6+ messages in thread
From: terry white @ 2011-07-10 22:01 UTC (permalink / raw)
To: Dermot Paikkos; +Cc: linux-admin
... ciao:
: on "7-10-2011" "Dermot Paikkos" writ:
:
: "Does it? My first thought was that the array configuration was stored
: on the EPROM on the controller. Take the card out and you loose the
: config."
i don't think so. "eprom", is going to retain its data across power
cycles. SO, removing the card would not be problematic in that sense. i
would suggest trying to backup the 'config' data to trusted media while
its available ...
--
... it's not what you see ,
but in stead , notice ...
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Swap RAID controllers
2011-07-10 18:32 Dermot Paikkos
2011-07-10 19:24 ` Carsten Aulbert
2011-07-10 19:46 ` N. Harake
@ 2011-07-10 19:53 ` Kyle Gordon
2 siblings, 0 replies; 6+ messages in thread
From: Kyle Gordon @ 2011-07-10 19:53 UTC (permalink / raw)
To: linux-admin
On 10/07/11 19:32, Dermot Paikkos wrote:
> Hi,
>
> I have a hardware RAID controller in a server and I strongly suspect it's faulty and causing the server to become un-responsive. I'd like to swap the controller to see if the problems goes away. I suspect that means I will loose the disk configuration. I don't expect a definite answer but does anyone know if I can simply swap the card (same manufacture, possibly different model) and it pick up the disk configuration?
>
> Fingers crossed,
> Dermot.
> --
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>
That all depends on the make, model, and system in use, doesn't it?
--
Kyle Gordon - 2M1DIQ
Web: http://lodge.glasgownet.com
Jabber/Email/SIP: kyle@lodge.glasgownet.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Swap RAID controllers
2011-07-10 18:32 Dermot Paikkos
2011-07-10 19:24 ` Carsten Aulbert
@ 2011-07-10 19:46 ` N. Harake
2011-07-10 19:53 ` Kyle Gordon
2 siblings, 0 replies; 6+ messages in thread
From: N. Harake @ 2011-07-10 19:46 UTC (permalink / raw)
To: Dermot Paikkos; +Cc: linux-admin
Usually control data are saved on disks, but still that depends on your raid control manufacture, expensive controllers like DDN and Netap save the data one three different disks, that allows you to easily replace the controller.
Backup your data before making any changes.
Good luck
Hussein
On Jul 10, 2011, at 8:51 PM, "Dermot Paikkos" <Dermot.Paikkos@sciencephoto.co.uk<mailto:Dermot.Paikkos@sciencephoto.co.uk>> wrote:
Hi,
I have a hardware RAID controller in a server and I strongly suspect it's faulty and causing the server to become un-responsive. I'd like to swap the controller to see if the problems goes away. I suspect that means I will loose the disk configuration. I don't expect a definite answer but does anyone know if I can simply swap the card (same manufacture, possibly different model) and it pick up the disk configuration?
Fingers crossed,
Dermot.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Swap RAID controllers
2011-07-10 18:32 Dermot Paikkos
@ 2011-07-10 19:24 ` Carsten Aulbert
2011-07-10 19:46 ` N. Harake
2011-07-10 19:53 ` Kyle Gordon
2 siblings, 0 replies; 6+ messages in thread
From: Carsten Aulbert @ 2011-07-10 19:24 UTC (permalink / raw)
To: Dermot Paikkos; +Cc: linux-admin
[-- Attachment #1: Type: Text/Plain, Size: 803 bytes --]
Hi
On Sunday 10 July 2011 20:32:43 Dermot Paikkos wrote:
> I have a hardware RAID controller in a server and I strongly suspect it's
> faulty and causing the server to become un-responsive. I'd like to swap
> the controller to see if the problems goes away. I suspect that means I
> will loose the disk configuration. I don't expect a definite answer but
> does anyone know if I can simply swap the card (same manufacture, possibly
> different model) and it pick up the disk configuration?
>
It all depends - mainly on the hardware. *Usually* it should pick up the
disks.
If you have a spare part and a spare system you can test this, e.g. set-u pa
RAID and after shutting down the system swap the drives and see if it still
works.
What controller is it?
Cheers
Carsten
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Swap RAID controllers
@ 2011-07-10 18:32 Dermot Paikkos
2011-07-10 19:24 ` Carsten Aulbert
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Dermot Paikkos @ 2011-07-10 18:32 UTC (permalink / raw)
To: linux-admin
Hi,
I have a hardware RAID controller in a server and I strongly suspect it's faulty and causing the server to become un-responsive. I'd like to swap the controller to see if the problems goes away. I suspect that means I will loose the disk configuration. I don't expect a definite answer but does anyone know if I can simply swap the card (same manufacture, possibly different model) and it pick up the disk configuration?
Fingers crossed,
Dermot.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-07-10 22:01 UTC | newest]
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2011-07-10 20:26 Swap RAID controllers Dermot Paikkos
2011-07-10 22:01 ` terry white
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2011-07-10 18:32 Dermot Paikkos
2011-07-10 19:24 ` Carsten Aulbert
2011-07-10 19:46 ` N. Harake
2011-07-10 19:53 ` Kyle Gordon
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