On Mon, 14 Jul 2003, Roger B.A Klorese wrote:

> You're missing the basic point.

I don't think so.

> Most of today's disk drives and disk arrays don't have Ethernet adapters.

True.

> Yes, iSCSI is a protocol, but if you can't put that protocol over a wire
> through which you can reach a provider, the distinction is pedantic at
> best.
>
> In order for it to be useful, there need to be devices to talk to that will
> speak it.

OK, granted.

> Similarly, one can claim that SCSI is a protocol that's spoken over FC...
> But that doesn't mean you can connect an SCSI-over-FC disk drive to a
> parallel-SCSI HBA without an adapter.  For that matter, you can speak IP
> over FC... But that doesn't mean you can have IP-over-FC and
> IP-over-Ethernet-on-fiber devices talk to each other.

You have confused me with that paragraph.
However, let me clarify:

The idea is to use GFS (or something like it).
Lars Holmstr�m stated "Some other file systems (like GFS) requires
specific hardware as far as I understand (iSCSI or FC) and most of the
Clustered file systems simply share the storage, usually SCSI and would
sometimes be somewhat limited."

To which I replied (summarized): iSCSI has nothing to do with hardware.
and I proceeded to yammer about how iSCSI is a protocol that essentially
provides a block device over ethernet. My choice of the word "nothing"
is wrong.  What I meant to say is that the actual storage mechanism
*underneath* the iSCSI provider is irrelevant, and that *no*, a user
doesn't need to go out and acquire (typically) expensive hardware that
speaks iSCSI, the user could buy cheap IDE drives and use his or her
cheap, general-purpose machine running Linux to provide the iSCSI
connectivity.

Hope that clarifies things.
--
No more monkey ducks, jumping on the bed!

Jon Nelson <[EMAIL PROTECTED]>
C and Python Code Gardener


-------------------------------------------------------
This SF.Net email sponsored by: Parasoft
Error proof Web apps, automate testing & more.
Download & eval WebKing and get a free book.
www.parasoft.com/bulletproofapps1
_______________________________________________
courier-users mailing list
[EMAIL PROTECTED]
Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users

Reply via email to