Monday, May 25, 2015

Memory Virtualization in Storage Management

      An OS feature that presents larger memory to the application than physically available

4  Additional memory space comes from disk storage

4  Space used on the disk for virtual memory is called ‘swap space/swap file or page file.

4  Inactive memory pages are moved from physical memory to the swap file

4  Provides efficient use of available physical memory


4  Data access from swap file is slower – use of flash drives for swap space gives best performance 



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