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RE: LVS use for mass-webhosting companys: Does it make sense ?

To: "Wayne" <wayne@xxxxxxxxxxxxxxx>, "Stephen Zander" <gibreel@xxxxxxxxx>, "Jochen Tuchbreiter" <jochen@xxxxxxxxxxxxxx>
Subject: RE: LVS use for mass-webhosting companys: Does it make sense ?
Cc: "Robert C." <robertc@xxxxxxxxxxxx>, <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: "Christopher Briggs" <hpuxadm@xxxxxxxxxx>
Date: Fri, 14 Apr 2000 21:57:29 -0400
Stephen, - and all.

Being an HP admin by default, you kind of caught me by surprise when you
said that:


>> SCSI controllers, allow both controllers to connect to two
servers and sharing the same file system.  You can
configure a LUN number on it and mount it on both
servers.

Are we suggesting that an admin could have DB files on an individual PV
that is linked between two systems(easily done) and have them mounted
at that same time without data corruption(didn't think this was possible -
I am familiar with the concept of the 'devices' being visible from two
systems,
but I didn't think both could mounted without the ownership of one of those
PV's or
devices being marked inactive(ServiceGuard package failover for example).

This is not a flame, so please excuse my ignorance..

Christopher.


-----Original Message-----
From: Wayne [mailto:wayne@xxxxxxxxxxxxxxx]
Sent: Friday, April 14, 2000 5:02 PM
To: Stephen Zander; Jochen Tuchbreiter
Cc: Robert C.; lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: LVS use for mass-webhosting companys: Does it make sense ?


Actually, HP has a device called "AutoRaid", it has dual
SCSI controllers, allow both controllers to connect to two
servers and sharing the same file system.  You can
configure a LUN number on it and mount it on both
servers.  Any change on one server will be visible
by another server.  It is not very expensive.

At 01:42 PM 4/14/00 -0700, Stephen Zander wrote:
> >>>>> "Jochen" == Jochen Tuchbreiter <jochen@xxxxxxxxxxxxxx> writes:
>     Jochen> I wonder if dual-homed-SCSI RAID solution will work fine
>     Jochen> with Software-RAID - does anyone have practical experience
>     Jochen> with this ? Dual-Homes SCSI sounds like a really
>     Jochen> interesting solution to me ...
>
>As a general comment, Dual-homed SCSI is *not* for the faint of heart.
>You might as well go to gfs, although that still has major drwbacks in
>the face of sytem failure.
>
>--
>Stephen
>
>"A duck!"
>






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