Samba backups provide a way to recover your Samba AD domain, in the unlikely event that it suffers a catastrophic failure. It does not backup individual DCs.
How do MySQL tables get corrupted? There are many ways to spoil data files. Often, corruption is due to defects in the underlying platform, which MySQL relies on to store and retrieve data - disk subsystem, controllers, communication channels, drivers, firmware or other hardware faults. Data corruption can also occur if the MySQL server daemon restarts suddenly, or your server reboots due to a crash of other OS components. If the database instance was in the middle of writing data to disk, it could write the data partially which may end up with a page checksum that is different than expected. There have also been bugs in MySQL so even if the server hardware is ok, MySQL itself can cause corruption.
Usually when MySQL data gets corrupted the recommendation is to restore it from the last backup, switch to DR server or take down the affected node if you have Galera cluster to serve data immediately from other nodes. In some cases you can't - if the backup is not there, the cluster was never set up, your replication is down for a very long time, or the DR procedure was never tested. Even if you have a backup, you may still want to take some actions to attempt recovery as it may take less time get back online.
Despite overall Elasticsearch stability, it is still possible for a cluster to get into a "red" state. One of the reasons for that to happen is if an index becomes corrupt. This can be caused by an abrupt loss of power, hardware failure or—more commonly—running out of disk space. In this post we'll discuss how to bring the cluster to a healthy state with minimal or no data loss in such situation.
When discussing disaster recovery, it’s important to take your business’ continuity plan into consideration. Backup and recovery processes are a critical part of any application infrastructure.
A well-tested backup and recovery system can be the difference between a minor outage and the end of your business.
You will want to take three things into consideration when planning your disaster recovery strategy: recovery time objective, recovery point objective and risk mitigation.
Recovery time objective (RTO) is how long it takes to restore your backups. Recovery point objective (RPO) is what point in time you want to recover (in other words, how much data you can afford to lose after recovery). Finally, you need to understand what risks you are trying to mitigate. Risks to your data include (but are not limited to) bad actors, data corruption, user error, host failure and data center failure.
get access via windows recovery system
Enables you to back up and restore your operating system, volumes, files, folders, and applications from a command prompt.
To configure a regularly scheduled backup, you must be a member of the Administrators group. To perform all other tasks with this command, you must be a member of the Backup Operators or the Administrators group, or you must have been delegated the appropriate permissions.
Relax-and-Recover is a setup-and-forget Linux bare metal disaster recovery solution. It is easy to set up and requires no maintenance so there is no excuse for not using it.