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Top Forums UNIX for Dummies Questions & Answers why need to mirror disk if we had backups ? Post 302186426 by cero on Thursday 17th of April 2008 07:51:21 AM
Old 04-17-2008
Mirroring keeps your server alive when a disk fails.
Backups keep your company alive in case of a disaster.

With backups you can recover from logical errors, maybe a user deleting a business critical file - mirroring cant help you here.

Business critical servers need both: service continuity (mirroring) in case of a disk failure and business continuity (backup) in case you lose the entire server.
 

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check_backuppc(8)					      System Manager's Manual						 check_backuppc(8)

NAME
check_backuppc - A Nagios plugin to monitor BackupPC SYNOPSIS
check_backuppc [options] DESCRIPTION
check_backuppc is a nagios plugin that reports on the status of BackupPC. By default, it monitors both archive and backup hosts for errors. OPTIONS
-a, --archive-only Only check the status of archive hosts. -b, --backup-only Only check the status of non-archive hosts. -s, --status-only Only check the status of the backups, omit connection failures that are less than $Conf{FullPeriod} old. -H, --hostname hostname Only check the specified host. Uses hostnames that BackupPC is configured to use, can be specified multiple times. -x, --exclude hostname Do not check the specified host. Uses hostnames that BackupPC is configured to use, can be specified multiple times. -w, --warning age The days old at which a failure is considered a warning, default 1. -c, --critical age The days old at which a failure is considered critical, default 8. -r, --reduce count The maximum number of failed hosts for which to reduce reported severity, default 0. -h, --help Show summary of options. NOTES
This plugin must be run on the same host and as the same user as BackupPC. An archive host only takes on a reported type of archive after its first archive run. EXAMPLES
/usr/local/lib/nagios/plugins/check_backuppc -r1 -w3 -c8 -b -x otter Check the status of all backup hosts except "otter". Warn if a failed backup is older than three days old, return critical if a failure is older than eight days old unless there is only a single failure. In that case, warn if the single failed backup is older than eight days. AUTHOR
Seneca Cunningham <tetragon@users.sourceforge.net> SEE ALSO
sudo(8). backuppc(8). check_backuppc(8)
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