[ale] Redundant File Servers

[Chris Ricker]

On Tue, 14 Sep 2004, Christopher Fowler wrote:

> On Tue, 2004-09-14 at 10:59, Chris Ricker wrote:
> > You can, though depending on what you're doing you still need a distributed
> > filesystem (like GFS) on top of that.
> > 
> 
> 
> Why?
> 
> Does'nt the iSCSI look like a scsi disk in Linux?  Could'nt you raid
> several disks from different iSCSI servers.  But that would only help if
> you are concerend about the iSCSI server and not the front server.

It depends on what you're doing and what you're wanting.

Say you do a mirror across two drives, one each in two different iSCSI
targets. Without a distributed filesystem, you can still only access the
filesystem riding on that mirror from one (iSCSI client) server at one time.  
You're protected against any one iSCSI target crashing, but not capable of
shared access to the filesystems riding on the RAID riding on iSCSI.

later,
chris