Josh Berkus <josh@agliodbs.com> writes: > Merlin, > > > I think the danger about SATA is that many SATA components are not > > server quality, so you have to be more careful about what you buy. For > > example, you can't just assume your SATA backplane has hot swap lights > > (got bit by this one myself, heh). > > Yeah, that's my big problem with anything IDE. My personal experience of > failure rates for IDE drives, for example, is about 1 out of 10 fails in > service before it's a year old; SCSI has been more like 1 out of 50.
Um. I'm pretty sure the actual hardware is just the same stuff. It's just the interface electronics that change. > Also, while I've seen benchmarks like Escalade's, my real-world experience > has > been that the full bi-directional r/w of SCSI means that it takes 2 SATA > drives to equal one SCSI drive in a heavy r/w application. However, ODSL is > all SCSI so I don't have any numbers to back that up. Do we know that these SATA/IDE controllers and drives don't "lie" about fsync the way most IDE drives do? Does the controller just automatically disable the write caching entirely? I don't recall, did someone have a program that tested the write latency of a drive to test this? -- greg ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
