If you're looking to access an older operating system within a newer architecture, emulation would be your preferred route. Practically speaking, when a certain application is released in a new version, rather than address compatibility issues and migration for every digital object created in the previous version of that application, one could create an emulator for the application, allowing access to all of said digital objects.ĭifference between a virtual machine and an emulatorĮmulation and virtualization carry many similarities, yet they have distinct operational differences. He further states that this should not only apply to out of date systems, but also be upwardly mobile to future unknown systems. Jeffery Rothenberg, an early proponent of emulation as a digital preservation strategy states, "the ideal approach would provide a single extensible, long-term solution that can be designed once and for all and applied uniformly, automatically, and in synchrony (for example, at every refresh cycle) to all types of documents and media".
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The emulator allows the user to have access to any kind of application or operating system on a current platform, while the software runs as it did in its original environment. Emulation addresses the original hardware and software environment of the digital object, and recreates it on a current machine. Emulation focuses on recreating an original computer environment, which can be time-consuming and difficult to achieve, but valuable because of its ability to maintain a closer connection to the authenticity of the digital object. Learning objective: (2) Explain what an emulator isĮmulation is a strategy in digital preservation to combat obsolescence.
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