Hi

The only way to connect 10 zOS machines to a TS3500 library is to split the 
library into 10 logical libraries unless you have one zOS machine that can act 
as a library manager (through TSM for example). This is done through the admin 
interface of the 3500 and basically means you will have 1 drive for each zOS 
machine.

I'm no zOS specialist, so i'm not sure if DFSMS can handle library sharing. But 
only 1 machine can control a logical library, which means that you cannot have 
all zOS machine trying to act as library managers over a single control path.

According to the DFSMS manual 
(http://publib.boulder.ibm.com/infocenter/zos/v1r9/index.jsp?topic=/com.ibm.zos.r9.idarc00/c8026.htm)
 it looks like you should be able to do this library sharing in DFSMS so that 
you can dynamically use the drives between all zOS machines, but like I said, 
I'm no zOS guy. Perhaps there is someone else on the list who knows this better.

Best Regards

Daniel Sparrman

-----"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> skrev: -----


Till: ADSM-L AT VM.MARIST DOT EDU
Från: Mehdi Salehi <ezzobad AT GMAIL DOT COM>
Sänt av: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
Datum: 03/19/2011 15:25
Ärende: Re: Ang: Control unit port load balancing in TS3500

Maybe this is more clear-cut:
How can ten z/OS systems connect to a TS3500 library that has ten TS1130
drives and one 3592-C06 control unit? How is the MPIO mechanism?

P.S:
3592-C06 control unit has only four 4Gbps FICON ports for z/OS hosts
path failover feature is available in the library.

Thank you,
Mehdi