hi ricardo
> Any one can suggest me softwares for mirror a server (Backup) ?
lots of backup and mirroring software..
- backup and mirroring is very very different...
assuming you want mirroring...
mirror.pl - common software...
=========
if you want to copy/mirror hda(sda) to hdb(sdb) --> use raid1
( hardware or software raid )
if you want something old/simple...to mirror from cron...
in quickie psuedo code:
#!/usr/bin/perl
#
# run this perioidicaly fron cron
#
$DIR = "/etc /root /opt /home /usr/local /var/log " ; # directories
you want to mirror
#
$INC = "-mtime -1"; # once a day
#INC = "-mmin -60"; # every hour
#
` mount /Mirror `; ( where /Mirror is a local disk or disk on
another machine )
` find $DIR $INC -print | tar zcf - -T - | ( cd /Mirror ; tar zxvfp - )
`;
` umount /Mirror `; # don't leave your mirror mounted....rm -rf
/....
#
# quick and simple....and full of holes...
- and yeah...the above grew into a "part-time job" to tke care of everybody's
"issues"
- was fun... lots of issues...
if you cannot loss of any data...
- the program creating the data should save the data in both places...
if you cannot handle the downtime due to hardware/software failure during the
"mirroring" you need to do mirroring at the disk controller level...
- problem with it...is if your original data is corrupted...your mirror
will
be also instantly corrupted...
what if the "mirror" disk gets 100% full...
what if the mirror fails to run or complete...than the new pass does not pickup
the last pass + this pass
- hardware down, network down, 2Gb files... "window's style names"
etc..etc..etc...
add a html gui to search the backup/mirror logs and see that certain key files
is mirrored....
-
- sorry...i had fun doing the "what ifs" across 192Gb of data...
-
c ya
alvin
