On Fri, 2005-Mar-04 16:37:05 -0600, Jason Young wrote: >Why not put a flash chip into the drive's onboard electronics, of the same >size as the drive's cache, or the max possible size of all outstanding >cached writes?
That seems to be a better idea. ISTR that once upon a time, vendors made chips that had RAM shadowed by EEPROM which gave you the non-volatility of EEPROM with the read/write performance of RAM. Since the EEPROM was written at once, you only needed 10-20 msec hold-up to preserve your RAM. >At least some modern drives (seen this on HP/Compaq servers, etc) already >have flash-upgradeable firmware. It's just a matter of adding a little >more. You would use it only when power fails, so it's not like you would >wear it out. I think that most modern drives have very little firmware in ROM - just a bootstrap - with most of the firmware stored on the disk itself. -- Peter Jeremy _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
