Etch amd64 + perc6/E RAID arrays + clustering (heartbeat)

[admin at matphot.com]

Thank you for the rapidity of your reply - that seems to be exactly  
what I need !  I'll look into it tomorrow and get back to you - thanks!

Sefu.

On Oct 10, 2008, at 12:17 AM, Chase Bolt wrote:

> I would take a look into DRBD. It is a Master/Slave relationship  
> between two
> servers, mirroring the specified drives. Server A would be the  
> Master and
> would replicate the chosen disks to Server B. When Heartbeat detects  
> Server
> A going down, it would promote Server B to become the new Master.
>
> It can take a bit to get the setup working correctly, but when you  
> do, it
> works really well.
>
> --Chase Bolt
>
> -----Original Message-----
> From: linux-poweredge-bounces at dell.com
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of admin at matphot.com
> Sent: Thursday, October 09, 2008 3:02 PM
> To: linux-poweredge at dell.com
> Subject: Etch amd64 + perc6/E RAID arrays + clustering (heartbeat)
>
> Dear All,
>
> First off, I've got four PE1950 machines running amd64 etch, each
> managing two MD1000's through perc6/E SATA controllers.
>
> My goal is to develop an always-available, high-security (high
> performance if possible) data storage system.
>
> Assuring the security/performance of the storage space under each
> server is not a great problem (either RAID 10 or RAID 50 or RAID 51),
> but I would like to consider perc6/E card failure, or the failure of a
> server itself, as I would like to provide a failproof-as-possible
> service that would be available uninterrupted around the clock. My
> idea was to have one server managing two first-level RAID 5 arrays
> 'mirrored' (clustered) to another managing also two first-level RAID
> arrays, with the content of one RAID array on one server 'mirrored' to
> another under the other server.
>
> I have read up on "heartbeat" (heartbeat-2) and it seems to do what I
> need as far as clustering servers goes, but what I can't find is a
> means to 'cluster' (or 'mirror') the contents of one RAID array to
> that of another under another server. Is this possible, or am I
> looking in the wrong place?
>
> I am still rather new to this, so any and all advice would be a great
> help.
>
> Thanks, best,
>
> J.M.S.
>
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