[comp.sys.att] Differences between a 3B5 and a 3B15

friedl@vsi.UUCP (Stephen J. Friedl) (03/31/88)

Hi folks,

     One of my customers is upgrading his 3B5 to a 3B15, and I am
wondering what kinds of performance improvements we can expect.
He currently has 700MB of disk and 6MB of RAM, and will likely
just be swapping processor boards.  We do very disk intensive
work and find the 3B5 quite reasonable:  the upgrade is not
being done exclusively for performance reasons -- support, SVR3
and expandability are big issues as well.  I would appreciate
hearing (via email) from others who have made this switch.

     Thanks,
     Steve

-- 
Steve Friedl           V-Systems, Inc.            *Hi Mom*
friedl@vsi.com {uunet,ihnp4}!vsi.com!friedl attmail!friedl

scl@virginia.acc.virginia.edu (Steve Losen) (04/01/88)

In article <463@vsi.UUCP> friedl@vsi.UUCP (Stephen J. Friedl) writes:
>Hi folks,
>
>     One of my customers is upgrading his 3B5 to a 3B15, and I am
>wondering what kinds of performance improvements we can expect.
>He currently has 700MB of disk and 6MB of RAM, and will likely
>just be swapping processor boards.  We do very disk intensive
>work and find the 3B5 quite reasonable:  the upgrade is not
>being done exclusively for performance reasons -- support, SVR3
>and expandability are big issues as well.  I would appreciate
>hearing (via email) from others who have made this switch.
>--
>Steve Friedl           V-Systems, Inc.            *Hi Mom*
>friedl@vsi.com {uunet,ihnp4}!vsi.com!friedl attmail!friedl

We upgraded about 10 3b5's to 3b15's.  The virtual memory speeds
things up noticably (I have no hard numbers) and since our 3b5's
had no MAUs, floating point operations on the 15's are obviously
several orders of magnatude faster.

BEWARE!!!  If you intend to run SVR3 (unavailable for 3b15's yet
as far as I know) you'll probably need to do another hardware upgrade.
Evidently SVR3 requires new hardware that our upgraded 3b15's don't
have.  Furthermore, we recently got some new 3b15's and these will
also require hardware upgrades for SVR3 :-(

We are running release 2.1.2 and this probably won't run on the
"suitable for release 3" version of the 3b15.  Talk to AT&T
to get the whole scoop.  You might want to wait for release 3 to
come out before upgrading your 3b5's to save yourself some bucks.
-- 
Steve Losen     scl@virginia.edu
University of Virginia Academic Computing Center

steve@redwood.UUCP (Steve Mitchell) (04/12/88)

#Somebody once said..
#
#BEWARE!!!  If you intend to run SVR3 (unavailable for 3b15's yet
#as far as I know) you'll probably need to do another hardware upgrade.
#Evidently SVR3 requires new hardware that our upgraded 3b15's don't
#have.  Furthermore, we recently got some new 3b15's and these will
#also require hardware upgrades for SVR3 :-(
#
#We are running release 2.1.2 and this probably won't run on the
#"suitable for release 3" version of the 3b15.  Talk to AT&T
#to get the whole scoop.  You might want to wait for release 3 to
#come out before upgrading your 3b5's to save yourself some bucks.
#-- 
#Steve Losen     scl@virginia.edu
#University of Virginia Academic Computing Center

Our AT&T rep helped us fill out the PO for the upgrade last week.  
They're runnig a promo: Hardware upgrade (new cache&cc, power, and
scsi) plus software for 16K (after academic discount I think).
But, get this, source license will run 100K for the public, 55K for
the academic community.  With the co-processor (add ~14K) it will 
be a 2.2 MIP machine..

--smitch

-- 
----------
Steve Mitchell  (steve@CSUFresno.edu)
CATI / CSU, Fresno / Fresno, CA  93740-0115 / (209) 294-2361
"BILL.  He's hot.  He's hip.  And he's hairy."

pjh@mccc.UUCP (Peter J. Holsberg) (04/13/88)

$55,000????  For the source license?  What does that entitle you to?
-- 
Peter Holsberg                  UUCP: {rutgers!}princeton!mccc!pjh
Technology Division             CompuServe: 70240,334
Mercer College                  GEnie: PJHOLSBERG
Trenton, NJ 08690               Voice: 1-609-586-4800

steve@redwood.UUCP (Steve Mitchell) (04/14/88)

pjh@mccc.UUCP (Peter J. Holsberg) wrote:
#
#$55,000????  For the source license?  What does that entitle you to?

I'm sorry, did I say source license?  I ment the source code itself.

--smitch
-- 
Steve Mitchell  (steve@CSUFresno.edu)
CATI / CSU, Fresno / Fresno, CA  93740-0115 / (209) 294-2361
"Remember, folks ... ask for those 'Bill the Cat' flammable pajamas by name.
 That's 'B-I-L-L.' not 'G-A-R-F-I-E-L-D.'"

pjh@mccc.UUCP (Peter J. Holsberg) (04/15/88)

In article <1005@redwood.UUCP> steve@redwood.UUCP (Steve Mitchell) writes:
== pjh@mccc.UUCP (Peter J. Holsberg) wrote:
== #
== #$55,000????  For the source license?  What does that entitle you to?
== 
== I'm sorry, did I say source license?  I ment the source code itself.
== 

What does a source license entitle one to, then?



-- 
Peter Holsberg                  UUCP: {rutgers!}princeton!mccc!pjh
Technology Division             CompuServe: 70240,334
Mercer College                  GEnie: PJHOLSBERG
Trenton, NJ 08690               Voice: 1-609-586-4800

steve@redwood.UUCP (Steve Mitchell) (04/17/88)

pjh@mccc.UUCP (Peter J. Holsberg) wrote:
#In article <1005@redwood.UUCP> steve@redwood.UUCP (Steve Mitchell) writes:
#== pjh@mccc.UUCP (Peter J. Holsberg) wrote:
#== #
#== #$55,000????  For the source license?  What does that entitle you to?
#== 
#== I'm sorry, did I say source license?  I ment the source code itself.
#
#What does a source license entitle one to, then?

Beats me.. I was thinking of the CSU's source license.  I guess that
means if one of our campuses buys source, all campuses can have copies.
At any rate, we are trying to hammer that out know, we don't want to
upgrade without source.

--smitch


-- 
Steve Mitchell  (steve@CSUFresno.edu)
CATI / CSU, Fresno / Fresno, CA  93740-0115 / (209) 294-2361
"Remember, folks ... ask for those 'Bill the Cat' flammable pajamas by name.
 That's 'B-I-L-L.' not 'G-A-R-F-I-E-L-D.'"