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List:       classiccmp
Subject:    RE: AS/400 Public Auction and IBM Model 3745 (was S/390 thread)
From:       "Dave" <dave.g4ugm () gmail ! com>
Date:       2012-03-29 23:28:15
Message-ID: 832FE376714B4D0B9D3AE8AEC8633C48 () EMACHINE
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> -----Original Message-----
> From: cctalk-bounces@classiccmp.org 
> [mailto:cctalk-bounces@classiccmp.org] On Behalf Of jim s
> Sent: 29 March 2012 23:11
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: AS/400 Public Auction and IBM Model 3745 (was 
> S/390 thread)
> 
> 
> It will be ground up for gold scrap by 99.99% of the buyers.  
> Sad ending 
> to a nice system.  I think they are some sort of modified 370 
> architecture internally.  This is the beast that did all the 
> comms in / 
> out of mainframes before they started to use the RT type technology, 
> then later the P390's.

Its later than a P390, but similar in concept. You can have two CPUs in an
MP3000. You can have real disks and tapes or emulated disks and tapes. In
addition it has a built in SAN that looks like real disks to the s/390
cpu's. When we had one at work this was the most unreliable part. The
technical intro is here:-

http://www.redbooks.ibm.com/redbooks/pdfs/sg245633.pdf

Ours from work went for gold scrap. The cost of transferring the OS licence
is usually expensive, and the only free OS it will run is zLinux. 

> 
> I know that oversimplifies the progression, but is basically the 
> story.   I'd love to have one to play with, but the size 
> makes it pretty 
> prohibitive to think about (not to mention power, etc.)
> 

F it has disks in the only bit you need is the CPU. It's a CPU and i/o in a
box.

> I would think I could run it on an R390 with the right OS as 
> well, not 
> sure.  I know the P/390 and R/390 channels will run tape and 3174 
> channel attached, but not sure about whether the channels would run a 
> 3745 or not.
> 

The channels are real bus and tag channels and will run a 3745. However they
can have built in LAN cards so you don't normally need a 3745.
 
> Jim
> 
> On 3/29/2012 2:41 PM, Sam Onella wrote:
> > There's also another huge 
> beasthttp://www.publicsurplus.com/sms/all,tx/auction/view?auc=
> 682194  which they're describing as "FRONT END PROCESSOR ~ 
> WORN Make:IBM Model:3745 Serial Num:0000061".  While it's 
> certainly impressive in mass, from what I can tell
> 


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