Andrew - Supernews <andrew+nonews@supernews.com> writes:
> On 2005-08-09, "Magnus Hagander" <mha@sollentuna.net> wrote:
>> ... or iDE disks with write cache enabled. I've certainly seen more than
>> what I'd call 1% (though I haven't studied it to be sure) that's because
>> of write-cached disks...
> Every SCSI disk I've looked at recently has had write cache enabled by
> default, fwiw.
On SCSI, write cacheing is default because the protocol is actually
designed to support it: the drive can take the data, and then take some
more, without giving the impression that the write has been done.
If a SCSI drive reports write complete when it hasn't actually put the
bits on the platter yet, then it's simply broken.
regards, tom lane