11/3/2022 0 Comments Smart utility hard drive![]() Mathematically, one attribute is perfect if the following inequality is TRUE (you may skip this paragraph if you hate maths): A - f(r) >= C (1)Ī - theoretical maximum value, the "best" possible value for the attribute. ![]() If the Threshold is 0 for any attribute, that attribute is not able to predict failure (because the Value cannot be less than 0). function in modern motherboard BIOSes warns the user at this point before booting the operating system. Manufacturers/vendors replace the hard disk in the terms of warranty. If this is not true for a critical attribute, failure is predicted, the hard disk is considered bad and it should be replaced immediately (the attribute determines the problem). SMART UTILITY HARD DRIVE SOFTWARENote: software may display more information based on these fields (for example, the status of an attribute, which can be "OK" or "Always OK" etc.) and may give help in evaluation or management of the attributes.Īn attribute is correct, when the Value is greater than or equal with the Threshold. An attribute can be for example critical (able to predict failure) or statistical one (does not directly affect condition). Status flags: indicate the main purpose of the attribute. Worst (byte): the worst (smallest) value ever found in the previous lifetime of the hard disk. On a new hard disk, this number is high (a theoretical maximum, for example 100, 200 or 253) and it is decreasing during the lifetime of the disk. This number is calculated by the algorithm, using the raw data (see above). Value (byte): the current relative "health" of the attribute. Threshold (byte): the (failure) limit value for the attribute. ![]() Sometimes different parts (for example, low, middle, high 16 bits) of this value contain different kind of information. This data is then processed by an algorithm designed by the hard disk manufacturer.
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