De-Indirection for Flash-Based SSDs With Nameless Writes

Provided by: University of Wisconsin-La Crosse
Topic: Storage
Format: PDF
The authors present Nameless Writes, a new device interface that removes the need for indirection in modern Solid-State storage Devices (SSDs). Nameless writes allow the device to choose the location of a write; only then is the client informed of the name (i.e., address) where the block now resides. Doing so allows the device to control block allocation decisions, thus enabling it to execute critical tasks such as garbage collection and wear leveling, while removing the need for large and costly indirection tables.

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