RE: Information on Enterprise Identity Mapping (EIM)?

["Andy Nolen-Parkhouse" <aparkhouse@xxxxxxxxx>]

The SCSI controller for disks (or most of the other cards) has never
been an IOP.  The IOP (Input/Output Processor) is the processor which
controls a number of slots on the bus and could be either an embedded
processor like the MFIOP or a separate card in a PCI slot.  The MFIOP
would do some practical work like controlling the CD-ROM or a QIC tape
drive, but generally, the IOPs manage overhead for the cards which do
the actual work.

The cards like Ethernet, disk controllers, etc. would be IOAs
(Input/Output Adapters).  I remember the announcement that they would be
dispensing with IOPs as they move towards an Infiniband fabric bus
architecture.  I think that it was mentioned in Bill Z's iSeries Nation
chat, although not referenced on the presentation materials.  Not sure
though.

Regards,
Andy Nolen-Parkhouse

> -----Original Message-----
> From: midrange-l-admin@midrange.com
[mailto:midrange-l-admin@midrange.com]
> On Behalf Of Pat Barber
> Sent: Tuesday, April 30, 2002 3:11 PM
> To: midrange-l@midrange.com
> Subject: Re: Information on Enterprise Identity Mapping (EIM)?
>
> They might do away with the term "IOP" but they will never do
> away with seperate intelligent processor(s) handling disk I/O.
>
> That's one of the "major" differences in the 400 vs
> everything else....
>
> Where did you see this "bus redesign" annoucement ???
>
>
> rob@dekko.com wrote:
> >
> > This is a multipart message in MIME format.
> > --
> > [ Picked text/plain from multipart/alternative ]
> > And they are doing away with IOP's with the bus redesign.
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