How to control a null output in EMC storage? Post: 302911087

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nscadm

nscadm(1M)						  System Administration Commands						nscadm(1M)

NAME

       nscadm - network storage control utility

SYNOPSIS

       nscadm freeze device

       nscadm unfreeze device

       nscadm isfrozen device

DESCRIPTION

       The nscadm command performs several network storage control functions.

       The  nscadm  freeze command closes existing references to the specified device, and blocks future accesses. This allows maintenance of vir-
       tual volume device drivers (for example, RAID 0, RAID 1, RAID 5) to be performed without shutting down the system.

       The nscadm unfreeze command reverses the effects of nscadm freeze for the specified device.

       The nscadm isfrozen command returns the current status of the specified device.

OPTIONS

       The nscadm command supports the following option.

       -h	    Display the usage menu.

OPERANDS

       The nscadm command line supports the following operand.

       device

	   Specifies the storage device to be acted upon by nscadm.

EXIT STATUS

       For the freeze and unfreeze, subcommands nscadm returns the following exit values:

       0	    Success

       255	    Error

       For the isfrozen subcommand, nscadm returns the following exit values:

       0	    Device is currently frozen.

       1	    Device is not currently frozen.

       255	    Error

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscmr, SUNWscmu	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       scmadm(1M), attributes(5)

SunOS 5.11							    2 Oct 2007								nscadm(1M)