RE: Disk upgrade with no downtime - possible? Follow up question

Pete,

I don't know about HMC, but System i Navigator has some "stuff" under Configuration and Services/Hardware/Disk Units that might give you what you want. You do need an SST id and password to access the Disk Units segment.

Jerry C. Adams
IBM System i Programmer/Analyst
--
B&W Wholesale
office: 615-995-7024
email: jerry@xxxxxxxxxxxxxxx


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Pete Helgren
Sent: Wednesday, March 11, 2009 2:38 PM
To: Midrange Systems Technical Discussion
Subject: Re: Disk upgrade with no downtime - possible? Follow up question

Thanks Kirk. That was what I needed.

(I may be needing Dr. Franken at this point) I was told by this
customer that the expansion unit was full. That is, there wasn't any
room to stick 5 additional drives into the unit. However, when I go to
the expansion unit itself and open each of the cages, there is one cage
that is completely empty and two others that have 5 slots open in
total. So, the question is: How do I find out what controller these
"cages" are connected to? I am guessing that they are allocated to the
production side but if I can see what is allocated to each partition, I
might be able to stuff these 5 drives into the remaining cage and add it
to the LPAR (if it hasn't been) and then just create a new parity set.

I can print out a rack config I guess but it would be great to see a
"map" and understand how the hardware is allocated to each LPAR. Is
there a way to do that? Can the HMC do that for me?

Pete


So, if I understand correctly

Kirk Goins wrote:

Pete Helgren wrote:

Former question is still open (in response to Kirk) but may be related
to this one:

What are the requirements for having more than one parity set in an
ASP? It *looks* like the same IOA can have multiple parity sets but I
can't tell what the "bus" requirements are. Basically, reading the
documentation, it says that each "bus" can support a parity set (I
think) but I am not sure what a "bus" is (unless it is the large 4 wheel
type that carries people). It may mean that each IOA has multiple
connectors for a set of disks. I am asking specifically what do I need
to look for in the config in order to make sure that I *can* have
multiple parity sets on the LPAR?

The reason I am asking is that I would like to make use of the 5 - 70GB
drives in the development LPAR and, since I cannot add them to the
existing parity set, perhaps I can create two parity sets?

Pete

Yes a Single IOA ( disk controller ) can support multiple raid sets.
Once you have all five 70s in the machine you can go to DST and Start
Parity Protection it should show you the five 70s and tell it to
start/build the raid set.