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Gold Medal Software - Volume 3 (Gold Medal) (1994).iso
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4403.TXT
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1994-03-04
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STACKER NOTE STACKER NOTE
BACKING UP STACKER DRIVES
(Applies to Stacker 4.0)
STAC FAX 4403 (02-08-1994)
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BACKGROUND
You can use your favorite backup program, like Fastback, Norton
Backup, or the DOS backup program to back up your Stacker drives.
A Stacker drive may be backed up like any other drive. If you
compressed drive C, have your backup program back up the files on
Stacker drive C.
COMMON QUESTIONS
Which drive do I back up?
Do I back up the STACVOL file?
Are the backed up files compressed?
How do I restore my backup made on a Stacker drive?
How do I read the Stacker Toolbox Backup Status Gauge in
Windows?
Which drive do I back up?
Back up your compressed drive(s) as you normally would. If you
have left any of your drives uncompressed and have installed
programs or data on them, you should back them up also. You do
not need to back up the small uncompressed drives that are
created when you compress your drives. In order to determine
which drives are the uncompressed "host" drives, go to the DOS
prompt and type:
STACKER <enter>
You will see a display something like this:
Drive C was drive C at boot time [ D:\STACVOL.DSK = 102.3MB]
Drive D was drive D at boot time
In this example, the C drive is compressed and the D drive is its
uncompressed physical drive. Back up the C drive and not the D
drive.
Do I back up the STACVOL file?
Your backup software may display a large hidden file on your
uncompressed drive called STACVOL.xxx. This file is the file that
contains all of your compressed data. When you back up the
Stacker drive, you have already backed up the contents of the
STACVOL file, and you do not need to back it up again.
Are the backed up files compressed?
Stacker uncompresses files as they are read from the hard drive.
They are then handed to the backup software in their original,
uncompressed state. If the backup software uses compression, it
will recompress the files before storing them to diskette or
tape. This means that the files can be restored to any drive,
compressed or not.
How do I restore my backup?
Restore your backup to any drive in the same way that you
normally would. You should remember that your backed up data is
uncompressed. If you restore it to a drive that does not have
Stacker running, it will also be uncompressed on the target hard
drive. This means that if you have had a major disk crash and are
restoring your backup to that drive, you must first run the
Stacker SETUP on that drive in order for the restored backup to
be compressed. This may be important if the drive is not
physically large enough to hold all of the backed up data.
How do I read the Stacker Toolbox Backup Status Gauge?
The Backup Status Gauge displays how much of your drive has not
been backed up. It does this by examining the files on your drive
for the archive bit. The archive bit is a DOS attribute that is
"set" on each file whenever it is created or modified. Most
backup programs "clear" this attribute whenever they back up a
file. The backup programs can use the archive attribute to keep
track of files that have changed since the last back up. In the
same way, the Backup Status Gauge can report the same files by
telling you what percent of your files have the archive bit set.
See your DOS documentation for further information on the archive
attribute.
Note
Not all backup methods clear the archive
attribute. If you use such a method, the
Backup Status Gauge will not show your
disk's true status.
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Copyright 1994 Stac Electronics