Messaging Disaster Backup/Recovery
Business critical IT systems require tried and true disaster recovery plans.Trinity Consulting's DBAR offering provides the business and technical guidance to weigh the options and choose the solution that maximizes your disaster recovery ability while minimizing the time it requires.
Our Disaster Backup & Recovery service offering delivers guidance and expertise in:
- Requirements Planning - Here we uncover the business requirements that determine the recovery window that ultimately sets performance requirements. We develop a solid prescriptive plan that identifies critical components and the impact of their failure.
This step is critical, and often overlooked, or not given proper consideration even in small environments.
Consider the following real-world scenario with an advertised 4 hour SLA:- In one organization, their current hardware allowed them to replay transaction logs at a rate of 6 - 8 files/minute
- The company was using a 4-day full back-up cycle and differential on interim days
- On a given day, a storage group on Exchange Virtual Server 1 (EVS-1) hosting 95 mailboxes generated 324 log files, while a storage group on (EVS-2) generated 453
- Using these numbers is it likely that collectively these two servers are capable of yielding over 3,100 log files in the period of 4 days
Considering 8 files per minute are replayed this equates to a total of 388 minutes, or 6 hours 28 minutes to replay the logs after a restore operation
In the case of a full backup on day 1 (Monday at 11:59 PM) and a database failure at the end of the business day on Friday (prior to the next full backup) restore time may take a matter of minutes depending on whether disk-to-disk or disk-to-tape is used, but the replay of log files can be expected to take on the order of 6 1/2 hours, missing the SLA by 2 1/2 hours. Functional & Design Specifications - After Requirements Planning we guide you through designing the systems configuration and DR plans to meet your business requirements
Performance Testing & Certification - Once built, the solution is placed into the QA environment and undergoes a series of stress and failover tests using real-world performance and load scenarios prior to implementation
Implementation - Once QA testing is complete, the system is pilot tested and placed into production. Here we validate the formal operational procedures your staff will use moving forward
Operational Procedures - In this phase we define, document, and transfer the knowledge required to operate, maintain, and implement the DR plans as part of the Operational Model