Borrow Glance now, and spend time looking at disk access currently.
If it's heavy now, it will be heavier on less spindles, BUT the new
disks are probably a lot faster than the old, also the newer CPU will
help.
Spend money on memory, you cant have too much, and it really counts.
If you've spent time moving datasets around to make full use of your 6
spindles, remember that you'll only have two, thus having less scope for
this.

Good luck

Neil (2c) Harvey



> -----Original Message-----
> From: HP-3000 Systems Discussion [SMTP:[log in to unmask]] On
> Behalf Of Therm-O-Link
> Sent: 27 February 1997 08:56
> To:   [log in to unmask]
> Subject:      Disk Utilization
>
> Here's our current disk layout:
>
> 4 2203A 670MB drives, SYSGEN paths: 4.1.0, 4.1.1, 4.5.2, 4.1.2
> 2 7937H 571MB drives, SYSGEN paths: 4.1.4, 4.1.5
>
> Roughly 3.8 GB, all in the <long_name> volume set on a Series 948.
>
> We are contemplating (very seriously) going to a series 918 with two
> disk drives, a 2GB and a 4GB.  We have a 40-user license and do not
> exceed 32 sessions at any time.  We will probably (over the next year
> or two) add another 20 sessions, but the total session count will not
> exceed 64.  We have most of our users accessing one application, with
> two or three others accessing a second application.
>
> My nebulous-question-of-the-week is:
>
> Will we see any disk access time degradation by going from six
> spindles
> down to two or will the newer drives be quicker?
>
> If the answer to this is the infamous "It depends", how can I
> determine
> for sure what the answer will be for us?  Thanks in advance.
>
> Jim Phillips                            Manager of Information Systems
> E-Mail: [log in to unmask]      Therm-O-Link, Inc.
> Phone: (330) 527-2124                   P. O. Box 285
>   Fax: (330) 527-2123                   Garrettsville, Ohio  44231