RE: LPAR issue

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Al
CD drives are cheap in the scope of things. We did run across a case which
required room for more IOP/IOA  card slots and if we added in the CDROM for
that  partition it  would have  cost   the client more money for one of the
higher cost towers to house it verses a switchable unit

  Al Barsa wrote:

>The CD rom for the Primary partition must be the one in the MFIOP, and
>cannot be switched.  I would suggest that for the paltry cost of CD roms,
>you might be better putting them in all of the partitions.
>
>Al
>
>Al Barsa, Jr.
>Barsa Consulting Group, LLC
>
>400>390
>
>914-251-1234
>914-251-9406 fax
>
>http://www.barsaconsulting.com
>http://www.taatool.com
>
>
>
>
>
>|---------+----------------------------->
>|         |           Glenn Ericson     |
>|         |           <Glenn-Ericson@att|
>|         |           .net>             |
>|         |           Sent by:          |
>|         |           midrange-l-admin@m|
>|         |           idrange.com       |
>|         |                             |
>|         |                             |
>|         |           07/13/2002 10:04  |
>|         |           AM                |
>|         |           Please respond to |
>|         |           midrange-l        |
>|         |                             |
>|---------+----------------------------->
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>   |
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   |       To:       midrange-l@midrange.com
                                                       |
   |       cc:
                                                       |
   |       Subject:  RE: LPAR
issue
                         |
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>[ Picked text/plain from multipart/alternative ]
>Paul,
>I  would  recommend a  switchable IOP as a solution. The
>IOP  could  handle  either or both your  tape and CD.  This  suggests  only
>one IOP as well.
>
>If you had a  4partition system you might get  2  tapes/CDs & IOPs   and
>switch them into the  partitions to meet our  processing requirements (i.e
>0 to 2 tape drives in  a partition).
>
>Tape drive  like the 3590, for instance,  have  2 cables to attach to the
>system  or partition. This  is OK too but requires an IOP per partition.
>
>So there are  options  versus   cable swaps.
>
>                  Glenn
>
>At 10:03 PM 07/12/2002 -0400, PaulMmn wrote:
> >We switched a 3490 between 2 machines for a while using the hot
> >cable-swap method.  However, I don't recommend it as a permanent
> >thing-- all those pins on the plug; I cringed every time we moved the
> >cable.
> >
> >--Paul E Musselman
> >PaulMmn@ix.netcom.nospam.com
> >
> >
> >
> >>You're probably not SUPPOSED to, but I have switched a
> >>3590 amongst 3 partitions, just by moving the cable from
> >>one to the other, hot. It worked like a charm. Devices
> >>got activated nicely, etc. Of course, that was while at
> >>the lab in Rochester last year, so problems has lots of
> >>support  :-)
> >>>  Joe,
> >>
> >>-snip-
> >>
> >>>
> >>>  With expensive high-speed tape drives, there is some savings.  If you
> >>>  had three RAID controllers in a single enclosure, you could use one
>for
> >>>  each of three partitions, rather than purchasing three enclosures.  I
> >>>  think that you could do Ethernet cards, but why would you want to?  It
> >>>  would be possible to configure a system to share optical drives, but
> >>>  generally each partition is configured with one so that you could do a
> >>>  system load.  This may be a requirement.
> >>
> >>-snip-
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