#3 2 1 DATA BACKUP UPGRADE#

Azure replicates your data asynchronously to a secondary region, where LRS takes over and replicates it three more times.Īzure Backup protects you with 7-3-2 coverage–seven copies of your data with three different media types in two offsite locations.

Geo-redundant storage (GRS) replicates your data to a secondary region located hundreds of miles away from the primary region. Instead of switching backup copies from disk to tape (which slowly degrades over time), backup to Azure.ġ – secondary region paired with your primary region.

#3 2 1 DATA BACKUP UPGRADE#

These three replicas each reside in separate fault and upgrade domains.Ģ – Azure Storage coupled with your on-premises production disks meet the two types of media rule. Within an Azure Region, Locally Redundant Storage (LRS) replicates your data three times. If you add your production data, you are superior to 3-2-1 rule. How does Azure Backup follow the 3-2-1 rule?ģ – copies of your data are stored in the Azure region of your choosing. Worried about San Francisco falling into the Pacific? Keep a copy of your data in Michigan. Is your data center in Florida? Your backup needs to be in Oklahoma. Backup to disk, tape, and cloud!ġ – copy offsite (as far away as possible): Hurricanes Katrina and Sandy have shown us that keeping backups in a nearby storage facility just doesn’t cut it. The same media in different physical locations also satisfies this rule. Common hardware failures could take all of your data offline, making it unrecoverable. This is very versatile nowadays and each of the following implementations would count towards a 3-2-1 Rule configuration: Backups on disk (DAS, SAN, NAS and appliances) Backups on tape Backups on removable storage Storage snapshots (caution on separate media from production) Backups in object. More copies of your backup mean lower risk of losing everything.Ģ – different types of media: Backing up to the same physical disk as the system (or to the same storage array) is not logical. Good automation and discipline The single greatest obstacle to a proper 3-2-1 backup regimen is the discipline required to maintain it. The examples above where encryption is used are how it is beneficial, as opposed to how it is used by ransomware authors. The 3-2-1 backup rule has withstood the test of time and will help you overcome nearly any failure scenario.ģ – copies of data: This includes the original copy and two backups. Store these backups in a safe place, preferably under lock and key. If they had just heeded the tenants of the 3-2-1 backup rule, this situation could have been avoided altogether. As a result, they lost two years of work.

Backups were on the same drive array that had two failed disks. This is when I learned that the lab manager didn’t understand the 3-2-1 backup rule. I knew the system was regularly backed up. This past week I got the worst possible call.

3 2 1 data backup