This statement restores disks from backup volumes that were created via the DUMP-DISK or DUMP-PUBSET statement.
Single disk save entity
If disks or a pubset were saved using the single disk save entity, you must enter a separate RELOAD-DISK statement for each disk when restoration takes place. All saves created using an FDDRL version < V16.0 are involved here. In FDDRL V16.0 and higher, such saves are created by specifying precisely one VSN in the case of DUMP-DISK, and in the case of DUMP-PUBSET using SAVE-ENTITY=*SINGLE-DISK.
Disk set save entity
If multiple disks were saved using the disk set save entity (at least 2 VSNs specified in DUMP-DISK), the disks to be restored are also specified in a VSN list. A single one of these disks can also be restored. In all cases the SAVE-ENTITY=*DISK-SET operand must be specified.
If a pubset was saved using the disk set save entity (DUMP-PUBSET with SAVE-ENTITY=*DISK-SET specified), the RELOAD-PUBSET statement should be used for restoration.
When restoration takes place from the disk set save entity, the last tape of the tape set is requested during the job creation phase, and the metadata at the end of the tape is analyzed. Information on the disk set is then output, and the output disks are requested and checked.
Notes
If OVERWRITE-DISK=*BY-OPERATOR is specified, message FBD1251 is issued, asking for confirmation before the disk is overwritten.
If the output disks are specified using their mnemonic names (MNs; OVERWRITE-DISK=*UNIT(....) operand), they can also be used if they are not initialized or have the wrong format. In this case they are automatically initialized and formatted in the required format.
If a tape is rejected in the case of RELOAD-DISK, important metadata on the FDDRL tape save is output. This data provides information on the characteristics of the saved disk. It helps you when mounting disks (with regard to device type, format, capacity), when restoring and when allocating MTCs for FDDRL saves (see chapter "Tape information and information on disk backup").
RELOAD-DISK | Alias: RLD | ||||||||||||||||||||||||||||||||||||||||
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DISK =
VSN of one or more input disks that were saved and are now to be restored. The device type of the disk is the same as that of the saved disk. It is determined automatically.
DISK = <vsn 1..6>
Specifies a single VSN: It is not necessary to specify anything in the SAVE-ENTITY operand for a disk of the single disk save entity (corresponds to the default). If a disk of the disk set save entity is involved, the SAVE-ENTITY= *DISK-SET operand must be specified.
DISK = list-poss(64): <vsn 1..6>
Specifies a list with multiple VSNs: This specification is only possible for disks of the disk set save entity. The VSNs can be specified in any order. Fewer disks can also be specified than for the save. The SAVE-ENTITY= *DISK-SET operand must be specified.
TAPE =
Specifies the volumes to be used for the restoration.
TAPE = *BY-VOLUME-CATALOG(...)
This specification is only possible when MAREN is being used.
The volumes are to be determined automatically by MAREN. The file name in the volume catalog and a version specification are required for this purpose.
FILE-NAME = <filename 1..41 without-cat-user-gen-vers>
Designates the file name of the save in the MAREN volume catalog. By default the file names for the save have the following format:
FDDRL.D.<vsn> for single disk
FDDRL.D.<vsn>-1 for disk set, where <vsn> designates the first VSN specified in the save and “1” the first disk set.
VERSION = *LATEST / <integer -999..0>
Designates a particular file version in the volume catalog and consequently a particular save version.
VERSION = *LATEST
Selects the latest save version, i.e. that created most recently.
VERSION = <integer -999..0>
Selects the specified save version, the specification being relative to the last save version created.
VERSION=0 corresponds to the last save version, VERSION=-1 to the last but one.
TAPE = *BY-OPERATOR
This specification is not permitted in robot operation.
The operator assigns the volumes when responding to the mount request.
TAPE = list-poss(255): <vsn 1..6>
The designation and order of the volumes is determined by a list. The volumes are requested in the specified order.
The first VSN must identify the first backup volume; otherwise the RELOAD-DISK run cannot be started. The first backup volume uniquely defines the save generation. FDDRL ensures that the continuation volumes are from the same save generation. If the continuation volumes are specified in the wrong order, FDDRL rejects each incorrect volume with message FBD2307 and requests the correct one.
In the mount process, the volumes specified here are requested. No reassignments to volumes with another VSN are permitted. If the operator rejects volumes which have been specified incorrectly, the restoration is terminated abnormally.
If not all the volumes required for restoration are specified, FDDRL uses the message FBD2300 to request the operator to enter the missing VSNs.
In the case of the disk set save entity you must ensure that the last VSN in the VSN list is requested twice. On the first occasion it is requested before the first VSN in order to read the metadata at the end of the last tape of the tape set.
TAPE-DEVICE-TYPE =
Specifies the volume type of the MTCs used for the restoration.
TAPE-DEVICE-TYPE = *BY-VOLUME-CATALOG
This specification is only possible when MAREN is being used.
MAREN determines the volume type itself. If the VSN is not specified (TAPE=*BY-OPERATOR), the default volume type set for MAREN is used here (MAREN parameter DEFAULT-DEVICE-TYPE).
TAPE-DEVICE-TYPE = <device>
Volume type of MTC on the basis of which device management is able to determine the type of device that will be required to process a tape. TAPE may not be specified.
SAVE-ENTITY = *SINGLE-DISK / *DISK-SET
Specifies whether the disk to be restored was saved as a single disk (single disk save entity) or in a disk set (disk set save entity). The default is the single disk save entity. Multiple VSNs can only be specified in the DISK operand in the case of disk sets. In this case SAVE-ENTITY=*DISK-SET must also be specified.
OVERWRITE-DISK =
Specifies the VSN of the output disk to be mounted. If restoration is successful, the output disk is given the VSN of the saved input disk (original VSN).
OVERWRITE-DISK = *SAME-VSN
The output disk to be mounted has the same VSN as the input disk that was specified under the DISK operand.
OVERWRITE-DISK = *BY-OPERATOR
The VSN of the output disk to be mounted is not known to the FDDRL user. The operator is responsible for assigning the correct VSN.
The operand value *BY-OPERATOR should not be used during normal operation, since an operator error may cause foreign disks to be overwritten inadvertently. *BY-OPERATOR is intended exclusively for cases where the VSN is not known. This situation can occur if a previous COPY-DISK, COPY-PUBSET, RELOAD-DISK or RELOAD-PUBSET run was not terminated correctly. In this case, the SVL still contains a dummy VSN which has been assigned by FDDRL (formed from the time of the FDDRL run) and which is designed to prevent BS2000 from working with this disk.
OVERWRITE-DISK = *UNIT(...)
The output disks to be mounted are specified using their mnemonic device names (MNs). The operator must confirm the disk assignment. The output disks can be used even if they are not initialized or have the wrong format. In this case they are automatically initialized and formatted in the required format (if this is possible with VOLIN).
UNIT = *SAME-UNIT
The output disks to be mounted have the same MNs as the saved original disks.
UNIT = list-poss(64): <alphanum-name 2..2> / <x-text 4..4>
Mnemonic device names (MNs) of the output disks.
When restoration takes place from a disk set, the MNs specified in a list are used in accordance with the backup sequence of the save.
OVERWRITE-DISK = list-poss(64): <vsn 1..6>
The output disks to be mounted have the specified volume serial numbers.