HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Command Line Interface Reference Guide (EK-G80CL-RA. C01, March 2005)

CLI Command Descriptions
82 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Command Line Interface Reference Guide
The relationship of the parameters can be summarized as follows:
If the ADD SNAPSHOT_UNITS command is entered, storageset-name
becomes snapshot-unit and archives the current contents of
source-unit at that instant.
These parameters are described in the following paragraphs.
snapshot-unit
Identifies the unit number assigned to the snapshot unit (see the ADD UNITS
command for an explanation of unit numbers).
The snapshot unit is created with all host access disabled by default. Issue a
SET unit-name ENABLE command to set up host access.
The snapshot unit is created on the same controller as the source unit and
always remains online to the same controller as the source unit.
storageset-name
Identifies the name of the storageset that becomes the snapshot unit. The
storageset must have the following characteristics:
■ Capacity equal to or greater than the source unit
■ Initialized
■ Not a partition or a concatset
source-unit
Identifies the unit whose contents are frozen in time and preserved on the
snapshot unit. The source unit must have the following characteristics:
■ Less than 1.024 TB
■ Writeback cache enabled
■ Non-transportable
■ Must be preferred to one controller or the other (see the
PREFERRED_PATH switch of the SET unit-number command).