Executive Summary

A leading chartered accounting and financial consulting firm was entrusted with safeguarding critical business data such as tax filings, audit reports, and GST documentation. With growing operational demands and increasing concerns around the reliability of an on-premise NAS environment, the firm required a secure, scalable, and compliance-ready backup and disaster recovery solution.

Aabasoft implemented a hybrid cloud architecture leveraging Amazon S3, Amazon EFS, and the Druva SaaS platform. The solution enables automated weekly offsite backups, disaster recovery access through a cloud-based file system, and immutability-enabled backups to ensure regulatory compliance and data resilience.

About Customer

The customer is an established chartered accounting firm registered under ICAI, serving both regional and multinational clients. The firm provides audit, tax advisory, and statutory compliance services and manages highly confidential financial records across multiple departments. This required a solution that ensured secure access, high availability, and tamper-proof data protection.

Customer Challenge

The firm faced multiple limitations with its traditional on-premise NAS setup:

• No remote access during power or network outages
• Absence of a disaster recovery plan, resulting in extended downtimes
• Manual backup processes with no offsite replication or version control
• Scalability constraints as data volumes increased
• High risk of data loss due to lack of immutability and limited storage protection

Solution Overview

Aabasoft designed a cloud-native backup and disaster recovery architecture with the following components:

• Amazon S3 as the first-stage offsite storage for weekly NAS backups
• Amazon EFS as the disaster recovery file system for secure, scalable access
• Amazon EC2 with AWS Transfer Family (SFTP) to provide secure file access to EFS during outages
• Druva SaaS platform for automated EFS backups with immutability, version control, and audit logging
• AWS Lambda scripts to automate weekly data movement from Amazon S3 to Amazon EFS

This architecture ensures continuous data protection and guaranteed access during any failure scenario.

Results and Benefits

• RTO 1 Hour, RPO 12 Hours: Rapid recovery with minimal data loss
• Cloud-based DR: Amazon EFS enables secure and scalable access during disruptions
• S3 Lifecycle Optimization: Short-term archival without manual intervention
• Secure SFTP Access: Remote access to critical files without VPN dependency
• Druva Integration: Immutable backups, versioning, and detailed audit trails
• Compliance-Friendly: Supports audit and data governance requirements
• Low TCO: Cost-effective design using SaaS, serverless automation, and managed AWS services

Conclusion

Aabasoft’s cloud-native backup and disaster recovery strategy enabled the client to transition from a high-risk, on-premise NAS environment to a secure, scalable, and fully automated AWS-based architecture. By leveraging Amazon S3 for offsite staging, Amazon EFS for disaster recovery access, and Druva for immutable backup protection, the firm achieved strong business continuity, improved collaboration during outages, and enhanced regulatory compliance.

This modern, auditable cloud solution future-proofs the firm’s infrastructure while ensuring the security and availability of critical financial data.