[ale] Sportin' SCSI/RAID

[Jeff Hubbs]

What you're saying is consistent with other info I'm finding, which is that
two systems cannot mount the same RAID volume over a shared SCSI bus at the
same time.  This and similar info is in the High Availability HOWTOs.  It
looks like for what I am thinking of doing, NFS etc. with a third system is
the sort of thing I'm facing.  I'm not thrilled with relying on disk access
over Ethernet (Fast, Gigabit, or otherwise), though, even if it's handled
out-of-band (i.e., NFS connectivity separate from network connectivity).
I've picked up some mentions about doing TCP/IP over SCSI, though, but no
concrete paths forward there.  

- Jeff

> -----Original Message-----
> From: jj at spiderentertainment.com [mailto:jj at spiderentertainment.com]
> Sent: Wednesday, December 22, 1999 3:33 PM
> To: Jeff Hubbs
> Cc: ale at ale.org
> Subject: Re: [ale] Sportin' SCSI/RAID
> 
> 
> I don't have too much experince with sharid a raid, but from 
> what I know, is you
> can do this:
> 
> 2 Servers  (Linux
> 1 Raid server (Linux
> 
> 2 servers are connected via NFS, or SAMBA.
> 1 Raid server runs MYSQL.
> 
> 
> Jeff Hubbs wrote:
> 
> > Does anyone here have any experience with sharing a RAID 
> array between two
> > Linux systems over a common SCSI bus?  What is required?  
> What are the
> > gotchas?  Is it less of a problem if one of the two 
> machines only reads from
> > the RAID volume?
> >
> > If the shared RAID array in question held, say, a MySQL 
> database, how would
> > both machines access it (again, presuming one machine only 
> reads)?  An
> > instance of MySQL on each system?
> >
> > - Jeff
> >
> > ** Happy Holidays to the ALE! **
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