Best Practices of Database Disaster Recovery in the DT Era

https://www.alibabacloud.com/blog/best-practices-of-database-disaster-recovery-in-the-dt-era_594169?spm=a2c65.11461447.0.0.44351932QARzlv


The four solutions are case-to-case basis:

The database disaster recovery seems very solid. Many top companies like Microsoft, Amazon, etc are solid too. How Microsoft protects your data
Microsoft has done excellent work in “SaaSifying” their applications. And just as with other SaaS providers, they do a great job with the data protection activities that typically fit within disaster recovery situations. For example, in a Microsoft article about backing up email in Exchange Online or Hosted Exchange they write:

“… Exchange Online uses the Exchange Server feature known as Database Availability Groups to replicate Exchange Online mailboxes to multiple databases in separate Microsoft datacenters. As a result, you can readily access up-to-date mailbox data in the event of a failure that affects one of the database copies. In addition to having multiple copies of each mailbox database, the different datacenters back up data for one another. If one fails, the affected data are transferred to another datacenter with limited service interruption and users experience seamless connectivity.”

Microsoft has architected a resilient environment to maintain its uptime SLA (99.9%), which also will protect your data. However, none of the snapshots created are available to administrators or end-users quickly and easily restore lost data. If users accidentally delete data from their mailboxes (according to a recent Global SaaS Data Protection survey, user error is the leading cause of SaaS data loss), Microsoft provides manual recovery from the Deleted Items folder and Single Item Recovery from the Recoverable Items folder. But are these methods enough for your organization’s retention requirements?