Carrying on from my earlier post, there is an interesting post by the founder of DATAllegro on his blog here, stating that now Microsoft have purchased DATAllegro they will be migrating their appliance from Ingres/Linux to SQL Server/Windows.

Over on the Microsoft BI Blog there is a post lauding how they have rave reviews for DATAllegro warehouses with data volumes over 200+ TB and amasing query response times.

So what will the move to Widows and SQL Server bring?

What will the migration path be like?

How will customers feel about the requirement to constantly apply windows patches to their “appliance”?

How many 200TB SQL Server/Windowswrehouse sites are out there at the moment?

Given the move from one technology stack to another is always fraught with difficult (just think SAS FM, SPM and ABM) then I would hate to be a DATAllegro customer with a 200TB warehouse at the moment.