z/OS MVS System Initialization Logic - Messmer The Brain House
z/OS MVS System Initialization Logic - Messmer The Brain House
z/OS MVS System Initialization Logic - Messmer The Brain House
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DASD Pathing…<br />
1 (P)<br />
Path Testing<br />
Each Path<br />
CCW:<br />
94 Release<br />
Messages:<br />
IGGN504A; IGGN505A; Required<br />
Dataset missing; I<strong>OS</strong>120A moved<br />
to MSI<br />
Zürich | 26. Oktober 2004<br />
2 (D)<br />
UCB Device Characteristics<br />
<strong>Initialization</strong><br />
One Path<br />
CCWs:<br />
E4 Sense Id; 64 RDC; 54<br />
Subsystem; FA RCD<br />
Message:<br />
IEC334I (duplicate SSID)<br />
NIP Resource <strong>Initialization</strong><br />
3 (S)<br />
SDP<br />
Each Path<br />
CCWs:<br />
E4 Sense Id (one Path)<br />
FA RCD (each Path)<br />
Message:<br />
I<strong>OS</strong>291I (Configuration<br />
Mismatch)<br />
4 (V)<br />
VOLSER<br />
One Path SDP Device<br />
Each Paths non-SDP device<br />
Messages:<br />
IEA213A; IEA214A<br />
(Duplicate VOLSER)<br />
DASD pathing consists of 4 different phases: path testing on each path (P), read device characteristics (D), self-describing<br />
product (S) and VOLSER processing (V)<br />
Any error consitions detected during the DASD pathing steps are reported to the NIP console via messages IGGN504A,<br />
IGGN505A, IEC334I, I<strong>OS</strong>291I, IEA213A or IEA214A (any A or action messages requires operator response)<br />
CCW = Channel Command Word<br />
RCD = Read Configuration Data<br />
RDC = Read Device Characteristics<br />
SDP = Self-describing Product<br />
SSID = Subsystem ID (DASD CUs)<br />
© 2004 IBM Corporation 23
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