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Wednesday, March 25, 2009

Non Volatile Cache Command Proposal for ATA8-ACS

Non Volatile Cache Command Proposal for ATA8-ACS
Nathan Obr

In order for the host to be able to provide guidance to the device on what sectors the NV Cache should contain, there needs to be new ATA commands that are capable of:
Device identification – NV cache size and power modes supported
Features negotiation – enable or disable use of the NV Cache
Entering the NV Cache power mode
Leaving the NV Cache power mode
Pinning (add and removes) LBAs in NV Cache
Synchronizing the NV Cache with magnetic media
Query LBAs in NV Cache
Query cache misses for access profiling
Afterwards, some commands for NV Cache have been added into ATA8-ACS.

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