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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278 z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
The value can also be set or changed dynamically by using the zfsadm config command.
6.14.4 New block security
The setting for nbs specifies whether new block security is used generally. If a file was
extended or new blocks were allocated for a file, but the user data was not written to disk
when a failure occurred, then the newly allocated blocks are shown as all binary zeros (0) and
not whatever was on disk in those blocks at time of failure.
Setting this value to OFF gives some performance benefit:
nbs=off
The value can also be set or changed dynamically by using
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