RE: iSCSI: One Node or Two?

[David Dillard <david.dillard@veritas.com>]

Mark,

I agree that your suggested rewordings clear things up (certainly works for
me anyway).


Thanks,

David


> -----Original Message-----
> From: Mark Bakke [mailto:mbakke@cisco.com]
> Sent: Monday, January 28, 2002 11:30 AM
> To: David Dillard
> Cc: IETF IPS Workgroup Reflector (E-mail)
> Subject: Re: iSCSI: One Node or Two?
> 
> 
> David-
> 
> The "or" is meant to be a non-exclusive or.  An iSCSI Node can
> be both an initiator and a target, and have the same iSCSI name
> for both.  See draft-ietf-ips-iscsi-name-disc-04:
>            
> >           2. iSCSI Names 
> >               
> >                 The main addressable, discoverable entity 
> in iSCSI is an iSCSI 
> >                 Node.  An iSCSI node can be either an 
> initiator, a target, or 
> >                 both. 
> 
> I agree that we should fix up the wording in the iSCSI draft to
> clarify this.  How about changing:
> 
> Section 1. Definitions:
> >         - iSCSI Name: The name of an iSCSI initiator or 
> iSCSI target.  
> 
> To:
> 
>         - iSCSI Name: The name of an iSCSI node, which can be an iSCSI
>           initiator, target, or both.
> 
> 2.5.1 iSCSI Architecture Model
> >                 b) iSCSI Node - The iSCSI Node represents a 
> single iSCSI 
> >                 initiator or iSCSI target.  There are one 
> or more iSCSI 
> >                 Nodes within a Network Entity.
> 
> To:
> 
>                 b) iSCSI Node - The iSCSI Node represents a 
> single iSCSI 
>                 initiator and/or iSCSI target.  An iSCSI Node 
> can be both
>                 and initiator and a target.  There are one or 
> more iSCSI 
>                 Nodes within a Network Entity. 
> 
> 
> I think that these two changes should clear this up.
> 
> --
> Mark
> 
> 
> David Dillard wrote:
> > 
> > As defined in the latest draft an iSCSI Node "... 
> represents a single iSCSI
> > initiator or iSCSI target."
> > 
> > By this definition an LU that acts as both an initiator and 
> a target, such
> > as a data mover for extended copy, is two iSCSI nodes.  
> This LU will have
> > two iSCSI names, one for the initiator side of the LU and 
> one for the
> > target.  Therefore, there will be two  iSNS "entries" for this LU.
> > 
> > My question is: Is this intended?
> > 
> > Regards,
> > 
> > David
> 
> -- 
> Mark A. Bakke
> Cisco Systems
> mbakke@cisco.com
> 763.398.1054
>