Software Manual

72 ShadowImage for the XP128/XP1024/XP10000/XP12000
Table 22 ICKDSF command parameters
Command Parameter Description
ESTPAIR DDNAME |
SYSNAME |
UNITADDRESS
DDNAME = dname = JCL statement identifying the volume.
SYSNAME = sysxxx = SYSNAME in the ASSGN system control statement.
UNITADDRESS = ccuu = device number.
PRI Primary volume (S-VOL): SSID, serial number, channel connection address.
You can set an additional parameter corresponding to each request instead
of a serial number.
(1) For an Add and Split request (refer to ”Adding and Splitting Pairs” on
page 56), the parameter is MSF00. This request is valid for MODE(COPY)
only. The parameter locations and descriptions are as follows:
Byte 0-6: Fixed value (xF0*7)
Byte 7: Indication of MRCF. ‘M’ = MRCF Å Distinguishes SI390 from TC390.
Byte 8: Subcode-1. ‘S’ = Split Å Requests simultaneous add and split.
Byte 9: Subcode-2. ‘F’ = Fast Mode Å Requests quick split.
Byte 10-11: Not used (xF0*2)
(2) For a Quick Resync request, the parameter is MRF00. This request is valid
for MODE(RESYNC) only. The parameter locations and descriptions are as
follows:
Byte 0-6: Fixed value (xF0*7)
Byte 7: Indication of MRCF. ‘M’ = MRCF Å Distinguishes SI390 from TC390.
Byte 8: Subcode-1. ‘R’ = Resync Å Distinguishes resync from add.
Byte 9: Subcode-2. ‘F’ = Fast Mode Å Requests quick resync.
Byte 10-11: Not used (xF0*2)
(3) For a Quick Restore request, the parameter is MRQ00. This request is
valid for MODE(RESYNC) only. The parameter locations and descriptions are
as follows:
Byte 0-6: Fixed value (xF0*7)
Byte 7: Indication of MRCF. ‘M’ = MRCF Å Distinguishes SI390 from TC390.
Byte 8: Subcode-1. ‘R’ = Resync Å Distinguishes resync from add.
Byte 9: Subcode-2. ‘Q’ = Quick Mode Å Requests quick restore.
Byte 10-11: Not used (xF0*2)
(4) For a Reverse Resync request, the parameter is
MRR00. This request is
valid for MODE(RESYNC) only. The parameter locations and descriptions are
as follows:
Byte 0-6: Fixed value (xF0*7)
Byte 7: Indication of MRCF. ‘M’ = MRCF Å Distinguishes SI390 from TC390.
Byte 8: Subcode-1. ‘R’ = Resync Å Distinguishes resync from add.
Byte 9: Subcode-2. ‘R’ = Reverse Resync Å Requests reverse resync.
Byte 10-11: Not used (xF0*2)
If you set a parameter other than the above parameters, the command will be
rejected.
SEC Secondary volume (T-VOL): SSID, serial number, channel connection address.