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norewind_close_disabled(5)			    norewind_close_disabled(5)

NAME
       norewind_close_disabled	- determine whether access to tape device spe‐
       cial files without the no-rewind-on-close option is allowed

VALUES
   Default
   Allowed values
DESCRIPTION
       Note: this tunable was named in releases prior to HP-UX 11i v3.

       This tunable notifies the tape driver whether it should allow access to
       device  special files without the no-rewind-on-close option.  When this
       tunable is on, the tape driver will fail any open on a tape device spe‐
       cial file that does not have the no-rewind-on-close option (that is, or
       with a status of

       The tunable allows the safe sharing of tape devices in SAN tape	backup
       solution configurations.	 The disabling of device special files without
       no-rewind-on-close in a SAN tape backup solution configuration prevents
       the  accidental sending of a rewind command on close from HP-UX systems
       via standard tape  commands  like  which	 would	corrupt	 a  backup  in
       process.

   Who Is Expected to Change This Tunable?
       Anyone.

   Restrictions on Changing
       Changes to this tunable take effect immediately.

   When Should the Tunable Be Turned On?
       This tunable should be turned on if the system is going to be used in a
       SAN tape backup solution configuration.

   What Are the Side Effects of Turning the Tunable On?
       The tape driver will fail any open to a tape device special  file  that
       does  not  have	the  no-rewind-on-close	 option	 with a status of This
       behavior prevents the usage of any tape device special file without the
       no-rewind-on-close option.

   When Should the Tunable Be Turned Off?
       This  tunable  should  be turned off if the system is not part of a SAN
       tape backup solution configuration or  the  system  utilizes  will  not
       function	 unless	 it has access to device special files without the no-
       rewind-on-close option.

   What Are the Side Effects of Turning the Tunable Off?
       A rewind may be issued accidentally from this system on close, possibly
       corrupting a backup being issued from another system on the SAN.

   What Other Tunables Should Be Changed at the Same Time?
       None.

EXAMPLES
       Query the current value of the tunable:

       Set the value of the tunable to

       To save the value of the tunable across reboots:

WARNINGS
       All HP-UX kernel tunable parameters are release specific.  This parame‐
       ter may be removed or have its meaning changed in  future  releases  of
       HP-UX.

       Installation of optional kernel software, from HP or other vendors, may
       cause changes to tunable parameter values.   After  installation,  some
       tunable	parameters may no longer be at the default or recommended val‐
       ues.  For information about the effects of installation on tunable val‐
       ues, consult the documentation for the kernel software being installed.
       For  information	 about	optional  kernel  software  that  was  factory
       installed on your system, see at

AUTHOR
       was developed by Hewlett-Packard.

SEE ALSO
       scsi_tape(7), scsimgr_estape(7).

			   Tunable Kernel Parametersnorewind_close_disabled(5)

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