Re: Model 9406-170 Memory Upgrade Options?

[DrFranken <midrange@xxxxxxxxxxxx>]

OK It works like this.  Essentially you can fill those slots with 
whatever number of 3001 and 3002 (and 3004 IIRC)  DIMMs until you get to 
1GB total. This would be the most velocity and memory the thing can 
handle. You CAN go right on past 1GB all the way to 2GB (at least) 
however once you pass 1GB you get an A900 1760 on the front panel (with 
the yellow light) which indicates you must run Reclaim Main Storage. 
Problem is that the only way to run that is via an IPL (it's 
automatic).  However the real problem is that your clock speed is cut in 
half as a penalty for blowing past the IBM storage limit on the 
machine.(It's actually a hardware limitation that results in the clock 
speed reduction)  As a result you have lots of memory but little forward 
velocity.

So crank it up to 1GB and let 'er rip.

Need any FC #3002s? I got lots.....

   - Larry "DrFranken" Bolhuis

On 6/24/2010 12:52 PM, Leonard Burns IV wrote:
> Anyone have any experience with an older Model 9406-170, Proc Feat 2159
> running V5R2M0 and upgrading the memory? Currently it has 2 x 128mb option
> 3002-00 chips in the memory expansion board. I pulled the board out and it
> has 16 slots, two of which are being used. Everything I can find indicates
> that this system has a max system memory of 832mb, which would be ~6 x 128mb
> chips.
>
>
>
> Does anyone know if this model / feature can actually support more than the
> 832mb of memory? If I fill every slot will the system work with 16x128, but
> not support more than 832 in the OS?  Seems weird to have so many slots and
> only support half of them if they're filled with 128mb modules.
>
>
>
> Anyone have any luck putting more memory into this beast than the 832mb
> "limit"? Or know which slots to populate if I put in another 4 x 128mb
> modules?
>
>
>
>
>
> Leonard
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>