STORE and TurboSTORE/iX Products Manual (B5151-90003)

54 Chapter3
Preparing Storage Devices
Storing to Disk Files
Storing to Disk Files
Using TurboSTORE/iX 7x24 True-Online Backup (product number HPB5152AA), you
have the ability to store files to disk files. This feature allows you to quickly back up
filesets. It also allows you to create archive files that maintain all MPE file attributes.
Since the disk backup file created is a flat, binary disk file, it can be moved to different
systems, or even different operating systems, and then RESTORE can be used to extract the
archived files. Disk files created by TurboSTORE can only be created and restored on
systems running MPE/iX 5.5 or later. They cannot be restored on a pre-5.5 system.
File equations are used to tell TurboSTORE to store to a disk file. Instead of setting up the
store device file equation to reference a tape device, set up the file equation to point to a
disk file. For example:
:FILE MYBACKUP;DEV=DISC
or
:FILE MYBACKUP=FULLBACK.BACKUPS.SYS;DEV=DISC
When specifying the file equation, ;DEV=DISC MUST be specified in order to Store to a disk
file. The target of the file equation can point to any MPE or HFS filename. Any other
information specified in the file equation will be ignored by TurboSTORE, so only the
filename and DEV=DISC should be used.
It is strongly recommended that you do NOT build the target disk file before invoking
STORE. TurboSTORE will create the target disk file as a binary file, with a default record
size of 256 bytes. The file will also be created with the file code 2501. The file system
mnemonic for this is STORE. For example, here is a listing of a TurboSTORE disk backup
file created by STORE:
:LISTFILE MYBACKUP,2
FILENAME CODE ------------LOGICAL RECORD----------- ----SPACE----
SIZE TYP EOF LIMIT R/B SECTORS #X MX
MYBACKUP STORE 128W FB 8736 16776959 1 10272 8 *
Although it is not recommended, you can create the target disk files before starting the
backup. Only normal, fixed, or undefined length record files can be specified. STORE opens
the file for user-mapped write access, so any restrictions that apply for user-mapped access
apply for store disk files. Store will NOT change the file code of an existing disk file, so if
you want the file to have the proper file code, specify it when you build the file.
If STORE fills up the first disk file specified for the backup, it creates as many additional
disk files as needed, or uses existing disk files. They will be built with the same default file
characteristics as the first disk file. The naming convention used for additional files is to
append the reel number to the end of the first disk filename. The resulting name will be an
HFS-syntax name.