UK Housing Association - Mimecast to Office 365 Migration

A UK, not-for-profit housing association was using Mimecast to archive and search email.  Having recently invested in the Microsoft Office 365 platform, non-legacy data had been migrated from their on-premise Exchange.  The client wanted to leverage their O365 investment and take advantage of 'unlimited' mailbox sizes in the new platform.  For increased user transparency and to reduce annual costs, TrueSwift was engaged to export the Mimecast data and import it into Office 365, securely and efficiently.  Upon completion, the legacy Mimecast solution was no longer required, significantly reducing annual running costs.

Data extracted from Mimecast cannot natively be ingested into O365. An element of post extraction data processing is required.

The date-based output from Mimecast needed to be converted into per-user entities prior to ingestion into O365 mailboxes.

There was a limited period before the Mimecast subscription expired and all data had to be exported by that date.

Due to internal resourcing constraints, the client required a service that did not rely on access to any resources, either personnel or infrastructure.

The use of the TrueSwift Migration Factory™ (TMF) solution was contracted to address all the clients’ needs.

In addition to professional services and specialist migration tools, the TMF solution included the required infrastructure to deliver the project, including network servers and storage to extract, process and transfer the data into the target O365 tenancy.

As all the infrastructure requirements were provided by TrueSwift, the lead time for engagement was just 24 hours and extractions from Mimecast were started within 48 hours.

The fully hosted, fully managed solution facilitated the swift and efficient extraction of data from the Mimecast platform to the client's O365 environment.

Once initiated, the extraction was scheduled to run 24/7.  Network bandwidth and data storage was configured to optimise this phase of the project.

Once extracted, the TrueSwift ArchiveX tool processed the data into per-custodian entities, storing it in a format optimised for fast ingestion into the target O365 environment.

The migration was also managed 24/7 to ensure the quickest throughput and reduced project timeframe.  Throughout the engagement, weekly calls were held to keep the client up to date with progress and to discuss any issues (including migration failures).  Weekly reports were also generated, providing detailed insight into performance and other throughput metrics.