10 More Discussions You Might Find Interesting
1. Solaris
Hi all,
Can anyone provide me with a site or book that gives detailed information about taking dump of a unix server on a tape and then restoring the server from the dump
Also i want information about migration from old server to new server (solaris 5.6 to solaris 8) (3 Replies)
Discussion started by: asalman.qazi
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2. Solaris
Hi Gurus,
I need help. Mine is an Ultra 10 machine running on solaris 7. Problem with solaris 7 is, it can no longer recognize IDE disks greater that 10GB. My workaround is ro use an external SCSI disk since it is recognizable with solaris 7. I backup my filesystems (residing on the IDE... (2 Replies)
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3. Solaris
I need to monitor our nightly backups and find a way to send an email out if the nightly backup does not kick off or fails.
Thanks for your help! (7 Replies)
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4. Solaris
Hello Everybody
I have two servers, name A & B. I need to take a backup of one directory(/girish) on serverA. But my tape drive is in serverB through tar command. But when I run the following command it doesn't take the backup. Could any one correct my command to take a backup
tar cvf - ... (0 Replies)
Discussion started by: girish.batra
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5. SCO
I am trying to make a full backup of my system using the cpio command. The Tape Unit is a SCSI DDS.
The process started fine but after about 30 minutes, it just stopped and showed the following message:
1755 Signal 31 - Core dumped
Any idea of what is causing this and how to fix it?
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6. UNIX for Dummies Questions & Answers
Hi,
I performed backup on tape and I want to append more files to my previous backup on the same backup tape. But before I do that I need to know the backup file size of the first backup I performed so that I know the available size on the backup tape. Can someone help me what command I will use... (0 Replies)
Discussion started by: ayhanne
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7. UNIX for Dummies Questions & Answers
Hi there: I'm new here
Can anyone help me:
I have DS15 Alpha server : Unix 5.1B
Now i need to connect a DLVT VS80 1U Rackmount Tape Drive unit.
What is the exact comman to mount the DLTape IV??
How do i make backuo @ copy file to the tape?
Thanx to all (0 Replies)
Discussion started by: ayzeayem
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8. UNIX for Advanced & Expert Users
Hi everybody,
My objective : copy a server, and be able to replicate it ( entirely) to a test environment. (Not for backing up the server)
I have went through the man pages (i admit,not comprehensively) of tar and dump.
I notice that they are loosely the same. since both allow me to... (1 Reply)
Discussion started by: new2ss
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9. UNIX for Advanced & Expert Users
Trying to answer a question about whether tar table-of-contents is a good tool for verifying tape data. (1 Reply)
Discussion started by: tjlst15
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10. UNIX for Advanced & Expert Users
Hi all!
I'm new in this forum. I need to ask a few question.
I would like to know if it is possible to use dump and tar command for backup in one tape.
If it is possible, how do I restore it back?
Fyi, I'm using the Digital Unix 4.0E OSF/1 box. (old box) :-)
Thank you. :) (0 Replies)
Discussion started by: apokobondo
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DUMP(1M) DUMP(1M)
NAME
dump - incremental file system dump
SYNOPSIS
dump [ key [ argument ... ] filesystem ]
DESCRIPTION
Dump copies to magnetic tape all files changed after a certain date in the filesystem. The key specifies the date and other options about
the dump. Key consists of characters from the set 0123456789fusd.
f Place the dump on the next argument file instead of the tape.
u If the dump completes successfully, write the date of the beginning of the dump on file `/etc/ddate'. This file records a separate
date for each filesystem and each dump level.
0-9 This number is the `dump level'. All files modified since the last date stored in the file `/etc/ddate' for the same filesystem at
lesser levels will be dumped. If no date is determined by the level, the beginning of time is assumed; thus the option 0 causes the
entire filesystem to be dumped.
s The size of the dump tape is specified in feet. The number of feet is taken from the next argument. When the specified size is
reached, the dump will wait for reels to be changed. The default size is 2300 feet.
d The density of the tape, expressed in BPI, is taken from the next argument. This is used in calculating the amount of tape used per
write. The default is 1600.
If no arguments are given, the key is assumed to be 9u and a default file system is dumped to the default tape.
Now a short suggestion on how perform dumps. Start with a full level 0 dump
dump 0u
Next, periodic level 9 dumps should be made on an exponential progression of tapes. (Sometimes called Tower of Hanoi - 1 2 1 3 1 2 1 4 ...
tape 1 used every other time, tape 2 used every fourth, tape 3 used every eighth, etc.)
dump 9u
When the level 9 incremental approaches a full tape (about 78000 blocks at 1600 BPI blocked 20), a level 1 dump should be made.
dump 1u
After this, the exponential series should progress as uninterrupted. These level 9 dumps are based on the level 1 dump which is based on
the level 0 full dump. This progression of levels of dump can be carried as far as desired.
FILES
default filesystem and tape vary with installation.
/etc/ddate: record dump dates of filesystem/level.
SEE ALSO
restor(1), dump(5), dumpdir(1)
DIAGNOSTICS
If the dump requires more than one tape, it will ask you to change tapes. Reply with a new-line when this has been done.
BUGS
Sizes are based on 1600 BPI blocked tape. The raw magtape device has to be used to approach these densities. Read errors on the filesys-
tem are ignored. Write errors on the magtape are usually fatal.
DUMP(1M)
09-21-2005
