Air Cleaner User Manual

Tab to change the option. “yes” indicates that the data will be
compressed before it is written to the backup media.
Compressing the data usually increases backup performance
and uses between 25 and 40% less space on the media. For best
performance, do not select this option if the backup device
provides its own hardware data compression. Compressing
data with software uses considerably more CPU cycles to
process the data.
Incremental backup level (0=full)
Default=(Blank/None). To perform an incremental backup of
the volume group, enter an incremental level. Level 0 indicates
a backup of all files and logical volumes. Leaving this field
blank also backs up all files and logical volumes but the
previous level 0 incremental backup information, if any, is not
overwritten. Refer to “Understanding Incremental Backups” on
page 4-1 for additional details.
User description
Default=(Blank/None). Enter up to 60 characters of descriptive
information to add to the volume label on the backup. Do not
use single (’) or double (″) quotation marks in the description.
Host read permission
Default=all hosts. By default, all hosts with access to the system
on which this file is written have permission to read, or restore
from, this image. Press Tab to limit read permission to the
original host or the server on which the file is written. This
option is displayed only when you back up to a disk image file.
User read permission
Default=all users. By default, any user on a host with access to
the system and directory on which this file is written has
permission to read, or restore from, this image. Press Tab to
limit the read permission to only the original user, the root user
on the original host, or the server to which the file is written.
This option is displayed only when you back up to a disk
image file.
Rewind tape before starting backup?
Default=yes. Press Enter to rewind the tape before the backup
begins. If you are placing multiple backup images onto a single
tape, then select “no” to place this backup on the tape at the
current location. This option is displayed only when you back
up to a tape device. For a system backup, tape boot information
is placed on the tape at the beginning of the first backup. This
information is not placed on the tape for subsequent backups.
Note: If this is the first backup to this tape, or if you have
restarted the system, reinserted the tape, or changed the
tape drive block size, you should select to rewind the
tape. Only if you completed another backup and have
not performed any of these functions will the tape be
positioned correctly at the end of the previous backup
image.
Forward to End of Tape Before Starting Backup
Forwards to the end of the last SysBack backup on the tape for
all backup types. Use this option when stacking multiple
Chapter 4. Performing Backups 4-19