NOTE:
You can use the
YKDROP
command to drop the REXX variables in any Host-Discovered
Array Index structure that was loaded by using the
YKLOAD
command.
Table 147 (page 333)
shows the Host-Discovered Array Index structure. The prefix for the name of
the Host-Discovered Array Index structure is one of the following:
•
When the
YKLOAD
command is used for creating the structure:
HCC.HDA.
•
When the
YKSCAN
command is used for creating the structure:
stem-name-specified-in-ARRAYS-parameter
Each REXX variable is preceded by a period (
.
).
Table 147 Host-discovered Array Index Structure
Description
REXX variables
Number of storage systems (number of n)
0
Serial number of a scanned storage system
SerialNum
n
1
Device Address Domain ID
DADID
Value specified to stem-name for Host-Discovered Array structure,
excluding the trailing period.
Prefix
Map information acquired from CU number
CUMap
Map information acquired from CCA
CCAMap
CU
xx
2
Command device map information
CDEVMap
1
Created for each
SN
(storage system serial number), thus index information for each device connected to the host is
created.
2
Created for each CU, thus the device index information is created for each defined CU (CU number). The xx in
CU
xx
is a hexadecimal value.
Example of CUMap:
For
CUMap
,
1
is assigned to the area that conforms to the CU number.
When defined
CU
number is
00
,
01
,
03
, and
05
, the value for
CUMap
is
11
1
1
.
Example of CCAMap:
For
CCAMap
,
1
is assigned to the area that conforms to the CCA.
When defined
CCA
is
01
,
02
,
05
, and
06
, the value for
CCAMap
is
11
1
1
.
Example of CUxx:
If
11
1
1
is set to CCAMap of CU=05, the value for
CU05.CCAMap
is
11
1
1
.
stem-name is fixed so that the
YKLOAD
command and the
YKSTORE
command can access the structure.
Host-discovered Array Structure
The Host-Discovered Array structure is created by using one of the following methods:
•
Executing the
YKLOAD
command to load copy groups, so that the disk configuration definition
file will be converted to the Host-Discovered Array structure.
•
Executing the
YKSCAN
command, so that the scanned information will be converted to the
Host-Discovered Array structure with a prefix specified in the
STEM
parameter.
The
YKSTORE
command saves the Host-Discovered Array structure to the configuration file.
NOTE:
You can use the
YKDROP
command to drop the REXX variables in any Host-Discovered
Array Structure that was loaded by using the
YKLOAD
command.
The information in the Host-Discovered Array Index structure is used for referring to the
Host-Discovered Array structure. For the structure, see
“Host-discovered Array Index Structure”
(page 332)
.
About REXX Variable Structures 333
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