This article describes reliability support in Azure Everpure Cloud and covers both regional resiliency with availability zones as well as disaster recovery and business continuity across regions.
Service Levels
Service levels are an attribute of Storage Pool objects.
Availability zone support
Azure availability zones (AZ) are at least one or more physically separated groups of datacenters within each Azure region. Datacenters within each zone are equipped with independent power, cooling, and networking infrastructure. In case of a local zone failure, availability zones are designed so that if one zone is affected, regional services, capacity, and high availability are supported by the remaining zones.
Failures can range from software and hardware failures to events such as earthquakes, floods, and fires. Tolerance to failures is achieved with redundancy and logical isolation of Azure services.
For more detailed information on availability zones in Azure, see Regions and availability zones.
LRS deployments
Everpure Cloud supports availability zone deployment (zonal resource) with locally redundant storage (LRS).
The LRS architecture enables it to provide a minimal latency to your workload. Persisted data is managed through RAID-HA, ensuring protection against simultaneous dual-drive failures.Each underlying drive persisting your data gets replicated three times within a single data center in the selected region, and protects your data against server rack and drive failures.
LRS architecture in Everpure Cloud provides at least 99.999999999% (11 9's) of durability over a given year.
Outage detection, notification, and management
You can find outage declarations in Service Health - Microsoft Azure.
Capacity and proactive disaster recovery resiliency
Microsoft and its customers operate under the Shared Responsibility Model. Shared responsibility means that for customer-enabled DR (customer-responsible services), you must address DR for any service you deploy and control. You should prevalidate any service you deploy will work with Everpure Cloud service. To ensure that recovery is proactive, you should always predeploy secondaries because there's no guarantee of capacity at time of impact for those who haven't preallocated.
Microsoft Failover Clusters
Microsoft Failover Clusters support in Everpure Cloud service provides a robust and reliable solution for high availability and disaster recovery scenarios. Integrating with Microsoft Failover Cluster Manager enables seamless failover and failback operations, ensuring critical applications and services remain available even in the event of hardware or software failures.
This includes the ability to manage Cluster Disk Resources and Cluster Shared Volumes (CSV), which are essential for virtualized environments and applications like Microsoft SQL Server and Microsoft Exchange.