The Challenge – DRaaS Can’t Guarantee High Availability
Although organizations are increasingly turning to disaster recovery as a service (DRaaS) to solve complex business and operational issues, many organizations can’t afford the business risks of doing so. Still others are adopting hybrid cloud solutions without truly understanding that they are potentially jeopardizing not only application uptime but also service level agreements (SLAs), regulatory compliance, productivity, revenue, reputation, and more. The problem is, current DRaaS solutions cannot guarantee continuous availability of their critical applications; once a disaster occurs, data loss is guaranteed—along with protracted recoveries, application downtime, reconciliation costs, and other untenable risks.
Here’s why: In a DRaaS solution, the organization’s primary data center is managed on premises, and the cloud service provider runs the secondary DR site. This site must be far enough away from the primary site to avoid disruption in the event of a regional disaster. This distance makes synchronous replication—with its associated latency and high communication costs—unfeasible for cloud service providers. Without synchronous replication, data loss is guaranteed, and application disruption is sure to be long and drawn out. Even if a service provider’s SLA assures high availability, there really is no way to guarantee high application availability in a DRaaS environment. Depending on the amount of data loss sustained in a disaster, the recovery time can grow dramatically as IT staff scramble to restore applications to consistency and do other tasks associated with data loss.
The Solution – True Zero Data Loss as a Service (ZDLaaS) Enables HA
Axxana’s Phoenix for Oracle on Microsoft Azure offers a true high availability solution that enables organizations to take advantage of hybrid disaster recovery services for their mission-critical applications. By guaranteeing zero transaction loss, it ensures the highest application availability—all at a fraction of the cost of traditional disaster recovery solutions, and without the latency and costly communication lines associated with synchronous replication.
With Phoenix for Oracle on Microsoft Azure, existing production databases remain on premises, and standby databases used for disaster recovery are deployed on the Microsoft Azure cloud. Axxana’s Phoenix Black Box, which functions as a mini disaster-proof data center, resides on the organization’s premises and protects yet-to-be replicated data. When a disaster strikes at the production site, the protected data is conveyed from the Black Box to the standby site in the Microsoft Azure cloud. Here, Phoenix recovery technology manages the data recovery process to ensure seamless application continuity. Because there is never data loss, organizations can move to failover without performing costly and time-consuming data reconciliation processes. They maintain the highest application availability, while meeting or exceeding even the most stringent recovery time objectives (RTOs) and SLAs.
Protected storage unit with DR capabilities
Installed at the production site, the Black Box is designed to withstand a wide variety of extreme conditions that may occur during a disaster.
Redundant Communication Systems Once a disaster has occurred, the Black Box has several methods of sending the transaction data to the remote site:
- Over an existing WAN (if the disaster is local and the WAN still operates)
- Downloading the transaction data over Wi-Fi to a laptop and transferring it over a secured alternative WAN connection
- Transferring the encrypted and authenticated transaction data via a VPN over a 4G network using multiple LTE modems.