Hitachi AMS 2000 Reference Manual page 28

Table 1-4: Paircreate Command Parameters (Continued)
Parameter
Options
(continued)
1–10
Hitachi AMS 2000 Family Command Control Interface (CCI) Reference Guide
Example: 
When the CTG is not used in TrueCopy
# paircreate -g VG01 -vl -f never
When the CTG is used in TrueCopy (The CTGID is assigned automatically.)
# paircreate -g VG01 -vl -fg never
When the CTG is used in TrueCopy (The CTGID is specified expressly.)
# paircreate -g VG01 -vl -fg never 1
When the CTGID is assigned automatically in TCE
# paircreate -g VG01 -vl -f async
When the CTGID is specified expressly in TCE
# paircreate -g VG01 -vl -f async 1
-vl (-pvol) or -vr (-svol): ?Specifies the data flow direction and must always
be specified. The -vl (-pvol) option specifies "local" and the host which issues
the command possesses the primary volume.
The -vr (-svol) option specifies "remote" and the remote host possesses the
primary volume while the local host possesses the secondary volume.
-c <size>: You can use this option to specify the copying pace (1 - 15) to
be used for the initial data copy. You can shorten the copy time by specifying
a large number. (1 to 5: slow, 6 to 10: normal, 11 to 15: prior)
-fq <mode>: Specify "normal" or "quick" with "-split".
-nocopy (TrueCopy and TCE): Creates paired volumes without copying data
in the case in which the data consistency of simplex volumes is assured by
you.
-nomsg: Suppresses messages to be displayed when this command is
executed. It is used to execute this command from a user program. This option
must be specified at the beginning of a command argument. The command
execution log is not affected by this option.
-split [Split-Marker] (ShadowImage and SnapShot only): Splits the paired
volume after the initial copy operation is complete. Also, an optional character
string (with ASCII 31 characters), which is specified by a user, can be added
to the S-VOL (V-VOL) as a <Split-Marker>.
-m <mode> (ShadowImage only): For mode, users can specify the following
option:
noread: Specifies the noread mode for hiding the secondary volume. The
secondary volume becomes 
read-disabled when this mode option is specified. The secondary volume is
read-enabled when this 
mode option is omitted. Note: The primary volume becomes read-disabled
only during a reverse 
resync operation (restore option of pairresync command).
mode=grp [CTGID] (SnapShot and ShadowImage only) Makes a group for
splitting all SnapShot and ShadowImage pairs specified in a group. SnapShot
and ShadowImage guarantee data consistency among multiple LUNs in a
group at a single point in time when doing a split using the "pairsplit -g
<group>" command (except "-S" or "-E" option).
A CTGID is assigned automatically if you do not specify the "CTGID" option in
this command. If "CTGID" is not specified and the maximum CTG already
exist, an EX_ENOCTG error will be returned. Therefore, the "CTGID" option
can forcibly assign a volume group to an existing CTGID.
Note: This option cannot be specified with "-split" option in the same
command. A plurality of pairs can be created to one P-VOL. But, the number
of pairs that can be set in one group is one pair per one P-VOL (see
3, "Paircreate Command", on page 1-11
Command –m Option (Correct Example)", on page
mode=cc (Volume Migration only): This option instructs the copying of the
volume migration to be made.
Performing CCI Operations
Value
and Figure 1-4, "Paircreate
1-12).
Figure 1-