z/OS Network File System Guide and Reference
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MVS implicit prefix

z/OS Network File System Guide and Reference
SC23-6883-00

Table 1 summarizes the interpretation of the mount statements based on the IMPPREFIX setting.

Table 1. Mount statements based on the IMPPREFIX setting
Mount\IMPPREFIX MVS HFS MVS,HFS HFS,MVS
v2/v3
/abc[,procattr] MVS HLQ z/OS UNIX dir
  1. MVS HLQ if a data set exists
  2. z/OS UNIX dir otherwise
  1. z/OS UNIX dir if exists
  2. MVS HLQ otherwise
/abc[/def...][,procattr] Invalid z/OS UNIX dir
  1. MVS Invalid, so
  2. z/OS UNIX dir
  1. z/OS UNIX dir if exists,
  2. Invalid otherwise
/a[.b...][(mbr)][,procattr] MVS PDS with member 'mbr' if PDS exists; otherwise invalid z/OS UNIX dir
  1. MVS PDS with member 'mbr' if PDS exists
  2. z/OS UNIX dir otherwise
  1. z/OS UNIX dir if exists,
  2. MVS PDS with member 'mbr' otherwise
v4
/abc[,procattr] MVS HLQ z/OS UNIX dir
  1. MVS HLQ if a data set exists
  2. z/OS UNIX dir otherwise
  1. z/OS UNIX dir if exists
  2. MVS HLQ otherwise
/abc/def[,procattr] MVS PDS with member 'def' if PDS exists; otherwise invalid z/OS UNIX dir
  1. MVS PDS with member 'def' if PDS exists; otherwise invalid, so
  2. z/OS UNIX dir
  1. z/OS UNIX dir if "/abc" exists,
  2. MVS PDS with member 'def' if PDS exists; otherwise invalid
/abc/def/...[,procattr] Invalid z/OS UNIX dir
  1. MVS Invalid, so
  2. z/OS UNIX dir
  1. z/OS UNIX dir if "/abc" exists,
  2. Invalid otherwise
/a[.b...][(mbr)][,procattr] MVS PDS with member 'mbr' if PDS exists; otherwise invalid z/OS UNIX dir
  1. MVS PDS with member 'mbr' if PDS exists; otherwise invalid, so
  2. z/OS UNIX dir otherwise
  1. z/OS UNIX dir if exists,
  2. MVS HLQ otherwise
Parent topic: Valid mount path specifications

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