RE: LPAR issue

["Al Barsa" <barsa@xxxxxxxxxxxxxxxxxxx>]

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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  |       To:       midrange-l@midrange.com                                     
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  |       cc:                                                                   
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  |       Subject:  RE: LPAR issue                                              
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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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