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

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Chapter 6 97
STORE and TurboSTORE/iX Command Options
STORE Options
MAXTAPEBUF should be used when storing to magnetic tape, DDS, or 3480 cartridges.
Currently, it is not necessary to specify MAXTAPEBUF when storing to MO devices or disk
files, since the maximum record size of 32K is already being used.
Normally when a STORE command is issued, a default record size of 16 kilobytes is used.
However, by using the MAXTAPEBUF parameter of the STORE command, the maximum
record size of the specified device is automatically used. If multiple backup devices are
specified, using the STORESET parameter, in conjunction with MAXTAPEBUF, STORE uses the
maximum record size, which is the lowest common denominator of the different devices.
This is necessary to ensure that the record sizes are the same on all volumes of the backup
set.
NOTE
Do not use the MAXTAPEBUF parameter with a backup device of 32 KB record
size if you anticipate that you will later restore the backup created to a
backup device whose maximum record size is 16 KB. Restoring a backup to a
larger maximum record size device, on the other hand, does not cause any
problem.
To increase record size when storing files, use the MAXTAPEBUF parameter in your STORE
command. For example:
FILE T;DEV=TAPE
STORE @.OPERATOR.SYS;*T;MAXTAPEBUF
Notification of File Availability (NOTIFY)
During the STORE process, the fileset that you are storing is usually unavailable for
modification. Files can be modified again after STORE is completed. If you are doing an
on-line backup using:
• TurboSTORE/iX 7x24 True-Online Backup
online backup
(using the ONLINE option
only), the files being stored are unavailable for a short time at the beginning of the
store. However, once they have been attached to STORE's logging mechanism, they are
available for modification.
• TurboSTORE/iX 7x24 True-Online Backup with
true-online backup
, (using the
Table 6-1. Maximum Tape Record Sizes
Tape Drive Record Size
HP 7974 16 KB
HP 7978A 16 KB
HP 7978B 32 KB
HP 7979 32 KB
HP 7980(XC,S,SX) 32 KB
DDS (all) 32 KB
3480 32KB