Re: For the Technical guys

[DrFranken <midrange@xxxxxxxxxxxx>]

Caution!

The use of part numbers for Power Systems configuration is not a great idea.

IBM Uses feature codes because the underlying part number can AND DOES 
change. This may include sourcing parts from multiple suppliers (they 
ALWAYS do this) as well as changes in the part over time. That said even 
the feature code can appear to change for the same drive or I/O adapter 
but in those cases the change typically indicates a different mounting 
configuration. (e.g. Sff-1 Sff-2 or Sff-3 for disk units.)

While it's probable that a part number search will yield results it's 
also very probable that it will miss valid results.

A classic was the old 4GB SCSI disk unit. Those things came in more part 
numbers than you could shake a stick at. They physically changed from 
1.6" to 1" drives, changed the style of the case completely, embodied 
maybe a dozen manufacturers and yet if you had a 6607 it worked! This 
was also a good example of finding the same disk unit with different 
mounting. These things went into model 400s with NO mounting into 170s 
and 620s and 720s with a blue handled sled and into older 3xx and 5xx 
models inside a complete enclosure that even had another board in it!


        - Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 4/26/2018 1:48 AM, Gad Miron wrote:
> Thanks Larry, Rob,  Diego, Jim, Ed
>
> Point taken, I'll ask the BPs.
> (this is 11 such disks in a Raid5 configuration, perhaps not that bad?)
>
> Googling this drives I only found them (Part No. 00E9953 ) configurable for
> a P8 machines.
> https://www.ibm.com/support/knowledgecenter/en/POWER8/p8ecs/p8ecs_drive_parts.htm
>
>
> Do you have the part no. for a Power 9 machine?
>
> Gad
>
> date: Wed, 25 Apr 2018 09:04:47 -0400
> > from: DrFranken <midrange@xxxxxxxxxxxx>
> > subject: Re: For the Technical guys
> >
> > They are in the list but don't buy 'em! Even for test and dev those
> > things are slow. At least get the 15K Drives and a few more of them. For
> > test and dev you may find that the read intensive SSDs will work for you
> > also yilding vast leaps in performance at reasonable cost.
> >
> >           - Larry "DrFranken" Bolhuis
> >
> > www.Frankeni.com
> > www.iDevCloud.com - Personal Development IBM i timeshare service.
> > www.iInTheCloud.com - Commercial IBM i Cloud Hosting.
> >
> > On 4/25/2018 8:58 AM, Gad Miron wrote:
> > > Hi Techies.
> > >
> > > Looking at (competing) quotes for  a new S914 (P9) dev. machine:
> > >
> > > one BP configures 1.1TB 10K RPM SAS SSF-3 disks
> > > the other BP says these disks are not configurable for S914 IBM i
> > machines.
> > > Who is correct?
> > >
> > > TIA
> > > Gad