While S.M.A.R.T. looks like a really great safety feature, it isn't really that useful or even necessary for most users. For S.M.A.R.T. to work, it is not just a matter of enabling it in the BIOS. You must also keep a S.M.A.R.T.-aware hardware monitoring utility running in the background all the time.
That's quite alright if the hard disk you are using has a spotty reputation and you need advanced warning of any impending failure. However, hard disks these days are mostly reliable enough to make S.M.A.R.T. redundant. Unless you are running mission-critical applications, it is very unlikely that S.M.A.R.T. will be of any use at all.
With that said, S.M.A.R.T. is still useful in providing a modicum of data loss prevention by continuously monitoring hard disks for signs of impending failure. If you have critical or irreplaceable data, you should enable this BIOS feature and use a S.M.A.R.T.-aware hardware monitoring software. Just don't rely completely on it! Back up your data on a CD or DVD!
Please note that even if you do not use any S.M.A.R.T.-aware utility, enabling S.M.A.R.T. in the BIOS uses up some bandwidth because the hard disk will continuously send out data packets. So, if you do not use S.M.A.R.T.-aware utilities or if you do not need that level of real-time reporting, disable HDD S.M.A.R.T. Capability for better overall performance.
Some of the newer BIOSes now come with S.M.A.R.T. monitoring support built-in. When you enable HDD S.M.A.R.T. Capability, these new BIOSes will automatically check the hard disk's S.M.A.R.T. status at boot-up. However, such a feature has very limited utility as it can only tell you the status of the hard disk at boot-up. Therefore, it is still advisable for you to disable HDD S.M.A.R.T. Capability unless you use a proper S.M.A.R.T.-aware monitoring utility.
enabling S.M.A.R.T. in the BIOS uses up some bandwidth because the hard disk will continuously send out data packets.
Originally posted by: tcsenter
I've been spared an unexpected hard drive failure three times now thanks to enabling SMART, the most recent being Sunday night on a Western Digital 80GB Caviar SE that is less than two months out of its crappy 1 year warranty. I extended the warranty for the other four WD drives I have, at $15 per drive. No more retail kit Western Digital drives for me (the bulk drives actually have a longer warranty and are cheaper - go figure).
However, be warned that if you ever get a SMART warning, don't assume you have plenty of time to back up your data. Your drive could have many days or weeks before failing, or it may have only many minutes. I immediately prepared a Ghost boot disk and cloned the failing 80GB drive to a spare 120GB drive I had. The 80GB drive bit the dust about 30 minutes later.
Originally posted by: Peter
The rojakpot explanation is incorrect, in that the drive doesn't need BIOS to "enable" anything. SMART-equipped drives do their monitoring all the time.
enabling S.M.A.R.T. in the BIOS uses up some bandwidth because the hard disk will continuously send out data packets.
This is horribly incorrect. Disk drives don't "send out data packets" unless there is a request from the host to do so. One more time: SMART needs no enabling, and does not inherently cost performance.
Even if you're not using a monitoring utility, having the BIOS poll the SMART status once at boot is useful. This lets you detect close-to-failure drives when you power the machine up. Of course this is useless with servers that are on 24/7.
Good post, troll.Originally posted by: 1EZduzit
Originally posted by: tcsenter
I've been spared an unexpected hard drive failure three times now thanks to enabling SMART, the most recent being Sunday night on a Western Digital 80GB Caviar SE that is less than two months out of its crappy 1 year warranty. I extended the warranty for the other four WD drives I have, at $15 per drive. No more retail kit Western Digital drives for me (the bulk drives actually have a longer warranty and are cheaper - go figure).
However, be warned that if you ever get a SMART warning, don't assume you have plenty of time to back up your data. Your drive could have many days or weeks before failing, or it may have only many minutes. I immediately prepared a Ghost boot disk and cloned the failing 80GB drive to a spare 120GB drive I had. The 80GB drive bit the dust about 30 minutes later.
Too bad you can't do that for your broken. inbred, brain.