February 2010
Intermediate to advanced
460 pages
16h 22m
English
book
z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
by Paul Rogers, Robert Hering
Content preview from z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
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Chapter 5. Sysplex considerations 233
on each system. Each z/OS UNIX on each other system then reads the couple data set
(CDS) and determines that it needs to send a mount request to the local zFS for that file
system. Each “local mount” causes zFS to open the data set (for read). In this way, the mount
on SC65 causes the file system to be mounted on every member of the sysplex.
For R/O mounted file systems, file requests are sent directly to the local physical file system,
which directly reads the file system data on DASD (as shown in Figure 5-66). That means
each zFS on each system has the zFS file system opened (for read) and directly accesses ...
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