Seagate ST980825AS User's Guide download pdf (Page 25)

.4 Attributes

The

table

in this section should be regarded as a general reference only.

Attributes and threshold values for any given hard disk drive are determine

by the

drive manufacturer

Each attribute has a raw value

(displayed in

Hexadecimal format)

–

the meaning of which is up to the manufacturer

–

and a normalized value that

rang

between

1 and

253 (1 representing the

worst value

and 253 representing the b

est).

Depending on the

drive

manufacturer, a value of 100 or 200 will often be

chosen as the "normal" value. Manufacturers that have supported one or

more S.M.A.R.T. attributes in various products include: Samsung, Seagate,

IBM (Hitachi), Fujitsu, Maxtor

Western Digital.

These manufacturers do not necessarily agree on precise attribute definitions

and measurements

For example,

the Reallocated Sectors Count

(ID 05) attribute value

decreases as the number of reallocated sectors increases. In this case,

the

attribute's raw value will often indicate the actual number of sectors that

were reallocated, although vendors are in no way required to adhere to this

convention.

In the table below, the following conventions are used:

Higher raw value is better

Lower raw value is better

Value varies by manufacturer

Yellow

highlight

Attribute value beyond the threshold value may indicate

imminent hard disk failure

1 2 ... 20 21 22 23 24 25 26 27 28 29 30

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Seagate ST980825AS User's Guide Page 25

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