Claudio Valderrama C. wrote:

>>
>>And recovery - Netfrastructure
>>has a log and requires a recovery process after a crash.
>
> Does that mean that Jim gave up on the idea of having automatic recovery due
> to intelligent caching disk controllers, SCSI adapters, file systems and the
> like?

Basically, yes. First, careful write requires a huge amount of
discipline in programming. Second, it imposes some restrictions
that are inconvenient - no double-linked structures. Third,
sequential writes to a log file are faster than scattered writes
directly to the database file. And, as you point out, intermediate
layers make reliable writes harder and harder to guarantee.

Regards,

Ann