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computerclub:helpcenter:smart_hard_drive

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SMART is hard

From a big picture perspective, the HD can be considered a computer that manages the devices in the HD. The devices are the motors, heads and disks. This implies that from the perspective of your computer, the HD behaves like a smart device (pun intended).

Having a way to look at SMART information is good, but… For the uneducated, making sense of the data is hard. Why? Because some errors are corrected by the HD before a command from the computer is completed by the HD. SMART data includes statistics that indicate corrected errors, that can precede the HD not being able to correct an error.

So how can a consumer differentiate between soft errors (errors that were corrected), hard errors (uncorrected errors) and soft errors that should indicate Replace The HD ?

Gsmartcontrol can display the contents of a LOG of HD events. If the LOG displayed by gsmartcontrol shows messages that are the color RED, the HD probably needs to be replaced.

SMART data includes statistics about corrected errors. Corrected errors can include positioning errors ( The HD determined that it positioned the heads in the wrong place) and media errors. (The HD determined a part of the disk surface is incapable of storing data).

Positioning Errors

A positioning error occurs when the HD detects the heads are in the incorrect postion. How is this possible? When data is recorded on the media, part of the data includes the position of the data.

Media Errors

Media errors can be detected because the data on the media includes correction data. When data is read from the media, the HD verifies the data is good and/or trys to correct the data with the correction data. If a sector of media is determined to be bad, then the HD may reallocate spare sectors for a bad sector on the media. HD's have a finite number of spare sectors for reallocation. If the HD exhausts the supply of spare sectors, data may be lost.

Gsmartcontrol Video

This video demonstrates gsmartcontol. It starts a bit slow, but does cover the important features of the tool. Youtube video about gsmartcontrol.

Alternatives to GsmartControl

alternativeto.net identifies alternatives to gsmartcontrol

Vendor comments about SMART.

Seagate offers this comment: Seagate and SMART

Discussion

gds, 2021/02/09 02:17

If you have an older suddenlink modem it is only capable of 200mps max. If you upgrade to a 1 gig modem you will see a difference. I had the same issue and I went to Best Buy and purchased the new modem and a faster router and now I am seeing between 360-400mps wireless and 420mps on an ethernet cable. Might be something for you to explore. My suddenlink modem was an Arris TM822 which I keep because I have a landline connection.

John Jenkinson, 2021/02/08 00:00

Have you power cycled your cable modem? Unplug from power for 10-15 seconds then plug back in, wait for it to initialize. some suddenlink reps forget to tell customers this. try fast.com for speed tests. this site can gang many streams for a more true bandwidth test. also, the Cyber Security SIG did a presentation on WiFi, speed etc. check the presentation with audio https://vimeo.com/395848238

RegBrockwell, 2021/02/08 15:27

I upgraded to 400Mbs Suddenlink service. My computer located by the modem and router is still only showing 80-90mbs. My ipad at the same location will show 200mbs. My laptop also shows 80-90Mbs. What is happening and how can I get close to 400Mbs.

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/home/sctxcompclubora/sctxcompclub.net/data/attic/computerclub/helpcenter/smart_hard_drive.1561983228.txt.gz · Last modified: 2019/07/01 12:13 by pb