geofftech

Hitachi/ibm Using Piece Of Cache For Firmware.

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Hey does anybody know y they take some of the cache for the firmware?  Are they the only manufacturer that does this?

I think IBM/HGST is the only mfr to state the net cache size. Since some memory is needed for the onboard electronics anyway, it makes sense to use unified memory.

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I don't know "y" but I do know why they do it. The SDRAM is a lot faster than ROM, and it's a heck of a lot more efficient to stick one piece of memory on the board. So, they store the firmware on the disk and cache it at startup.

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Well, the firmware might use some of the 2MB buffer to store data or firmware code to be executed.

You could always check the ATA specs to see if a command is available to check the cache info... but as it has already been said, why bother ?

2 MB is not as good as 8 MB... but you can not change that unless you change the drive.

The firmware needs some of the space, and there is nothing you can do about it.

If you want to speed up this drive, defrag it ! that's about all you can do !

Good luck !

MEJV

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