User guide

PARAMS, Continued
A WRITE command may fail for several reasons:
If a parameter is modified that requires the unit and the
unit cannot be acquired. (For example, it is not in the
available state with respect to all hosts. Changing the unit
number is an example of a parameter that requires the
unit.)
If a parameter is modified that requires controller
initialization and the user replies negatively to the request
for reboot. (Changing the nodename or the allocation
class are examples of parameters that require controller
initialization.)
Initial drive calibrations are in progress on the unit. (WRITE
is inhibited during this time.)
WRITE Syntax
WRITE
WRITE
Parameters
None
ZERO
The ZERO command clears a block of counters or all known
blocks of counters.
ZERO Syntax
ZERO counter
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