Kevin,

I tend to agree, however, the AutoRAID does not work like JBOD, so it really
isn't 12 "drives" on one channel. The AutoRAID suppports up to 8 LUNs,
therefore, 8 LDEVs, per AutoRAID. So the channel would "see" 8 devices. The
AutoRAID also has a cache, albeit small, and the technology to keep the most
frequently accessed data in a RAID 0/1 space.

A question that I have for the group/HP is "what is the maximum amount of
storage (GB) that is recommended on one fast-wide interface?". The "8-10
drives per FWD channel" has been a rule of thumb, but with 18GB drives and
the AutoRAID, you can be looking at 140-180GB per channel!!!

Regards,

>       _________________________________________
>
>       Rocky J. Costantino
>       Vice President
>
>       Computer Design & Integration, LLC
>       696 Route 46 West
>       Teterboro, NJ 07608
>
> *     e-mail  [log in to unmask]
> *     Web     http://www.cdillc.com
> *     Phone   (201) 931-1420 x224
> *     Fax             (201) 931-0101
>
>


-----Original Message-----
From: Kevin Newman [mailto:[log in to unmask]]
Sent: Monday, May 15, 2000 10:47 AM
To: Costantino, Rocky
Cc: [log in to unmask]
Subject: Re: 12H Array


I would wonder about that, how can 12 SCSI drives not saturate a FW SCSI
interface?

Kevin

"Costantino, Rocky" wrote:

> This means all I/O through
> one (fast-wide)channel. Not knowing the nature of your app, this may or
may
> not, be reason for concern. I have been told by certain HP folks that the
> disks will be the bottleneck before the channel becomes an issue, even on
a
> fully loaded AutoRAID...
>
> Regards,
>
> >       _________________________________________
> >
> >       Rocky J. Costantino
> >       Vice President
> >
> >       Computer Design & Integration, LLC
> >       696 Route 46 West
> >       Teterboro, NJ 07608
> >
> > *     e-mail  [log in to unmask]
> > *     Web     http://www.cdillc.com
> > *     Phone   (201) 931-1420 x224
> > *     Fax             (201) 931-0101
> >
> >