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GullySystem

Cloud and Server Migration for One Application

Cloud and server migration moves one application, its database and its files onto new infrastructure. The whole move is rehearsed on a copy before anyone is asked to switch.

What usually forces a move

  • An ageing office machine that a power cut or flooding can stop
  • A hosting provider closing, raising rates or dropping your plan
  • A virtual server bought years ago that no longer carries today’s load
  • Two systems that must be merged after an acquisition

How the move is carried out

Lift and shift

The application moves largely unchanged, which suits a case where the move date matters more than restructuring the software. Little is rewritten.

Re-platforming

Parts are adjusted during the move so that a managed database or storage service replaces a self-run one. The change is planned.

Database copied and compared

Data is copied, checksummed and compared with the source, and the new database is confirmed identical to the old one before cut-over.

Files verified separately

Uploads, scanned documents and historical exports are moved and checked apart from the database, since they fail in different ways. Both are counted.

Cut-over inside an agreed window

Both systems run side by side before anybody switches. Your staff check their screens, reports and printing on the copy. The cut-over then happens in a window agreed with your customers, with a defined point to roll back to.

FAQ

Frequently asked questions

Can our application keep running during the migration?

Yes, until the cut-over. The new environment is built and loaded alongside the old one, and only the final switch needs a quiet window.

What decides lift-and-shift or re-platforming?

It depends on the urgency and the state of the code. A provider closing soon points to lift and shift. A planned move can also replace a self-run database.

What if something behaves oddly after we switch?

The old environment stays intact and reachable for an agreed period. Rolling back is then a decision and not a rebuild.

Who owns the new environment afterwards?

You do. It is created in your own cloud account from the start. It is not transferred later.

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