Trying to understand backup command in Solaris

     We are switching over our backups from running on
a Sun0s 4.1.4 machine to one that is using Solaris 2.5
  I look at the man page for the command 'st' and it seems
to be written in Aramic.   So I need help.
     But most of all I need a working example.  So, okay,
say I have a server called sniffle and I want to use an
Exebyte 8505 8mm cartridge system in the 5 Gbyte format
with the partition names in the format /dev/dsk/c0t0d0s0
to /dev/dsk/c0t2d0s7 what would the backup script look
like?
bwsaulAsked:
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burnotteConnect With a Mentor Commented:
the best way to perform a backup under solaris 2.x is to use the command ufsdump and use ufsrestore to restore the backup.

here is a exemple:

ufsdump 0ufc /dev/rmt/0n /dev/rdsk/c0t0d0s0
ufsdump 0ufc /dev/rmt/0n /dev/rdsk/c0t0d0s1
and so on

the parameters 0ufc means :
0 : the dump level 0 ( full backup )
u : update the file /etc/dumpdates so you can know when your last backup as been done
f : specify the device name ( in this case /dev/rmt/0n )
c : set the write size to 63k instead of 32k


/dev/rmt/0n is the device name for your drive .
the device name /dev/rmt/0n if it is the first drive
/dev/rmt/1n if it is the second and so on.
don t forget the n for no-rewind.

/dev/rdsk/c0t0d0s0 is the file system that you want to backup.
you can also replace /dev/rdsk/c0t0d0s0 by the name of the mount point : for exemple /opt .

for the restore of the backup use the command ufsrestore

ufsrestore rvf /dev/rmt/0n
and this the number of time that you use ufsdump
ufsrestore restore the backup in the current directory so be award to be in the good directory when you restore your backup.

I hope this will help you.

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