Most recent hard disks do include S.M.A.R.T. support. You might find interesting to read the "What is S.M.A.R.T. and how can we use it to avoid data disaster?" article. S.M.A.R.T. can even report the temperature for your hard disk. If your disk controller, and its related drivers, allow it, SpeedFan can almost always access and report reliability data from any hard disk manufactured since 1995.
SpeedFan properly accesses the temperature sensor available in the following hard disks:

Manufacturers EXCELSTOR    17 FUJITSU    122 HITACHI    189 HP Compaq    3 IBM    53 MAXTOR    163 MDT    14 SAMSUNG    135 SEAGATE    297 SILICON IMAGE    1 TOSHIBA    67 WESTERN DIGITAL    1026

Hard disks from MAXTOR that include a temperature sensor Manufacturer Model Size Notes MAXTOR MAXTOR 2F020J0 19.6GB MAXTOR MAXTOR 2F020J1 20.8GB MAXTOR MAXTOR 2F020L0 20.84GB MAXTOR MAXTOR 2F030J0 30.0GB MAXTOR MAXTOR 2F030J1 30.0GB MAXTOR MAXTOR 2F030L0 30.75GB MAXTOR MAXTOR 2F040J0 40.1GB MAXTOR MAXTOR 2F040J1 41.1GB MAXTOR MAXTOR 2F040L0 41.1GB MAXTOR MAXTOR 3H500F0 500GB MAXTOR MAXTOR 4A160J0 164GB MAXTOR MAXTOR 4A250J0 251GB MAXTOR MAXTOR 4A300J0 300GB MAXTOR MAXTOR 4D080H4 80.0GB MAXTOR MAXTOR 4K020H1 19.9GB MAXTOR MAXTOR 4K040H2 39.1GB MAXTOR MAXTOR 4K060H3 58.6GB MAXTOR MAXTOR 4K080H4 78.2GB MAXTOR MAXTOR 4R040L0 41GB MAXTOR MAXTOR 4R060J0 60.1GB MAXTOR MAXTOR 4R060L0 60.1GB MAXTOR MAXTOR 4R080J0 80.0GB MAXTOR MAXTOR 4R080L0 80.0GB MAXTOR MAXTOR 4R120L0 123GB MAXTOR MAXTOR 4R160L0 164GB MAXTOR MAXTOR 5A250J0 251GB MAXTOR MAXTOR 5A300J0 300GB MAXTOR MAXTOR 5A320J0 324GB MAXTOR MAXTOR 6B080M0 82GB MAXTOR MAXTOR 6B080P0 82GB MAXTOR MAXTOR 6B100M0 100GB MAXTOR MAXTOR 6B100P0 100GB MAXTOR MAXTOR 6B120M0 123GB MAXTOR MAXTOR 6B120P0 123GB MAXTOR MAXTOR 6B160M0 164GB MAXTOR MAXTOR 6B160P0 163.9GB MAXTOR MAXTOR 6B160R0 164GB MAXTOR MAXTOR 6B200M0 203.9GB MAXTOR MAXTOR 6B200P0 204GB MAXTOR MAXTOR 6B200R0 204GB MAXTOR MAXTOR 6B200S0 204GB MAXTOR MAXTOR 6B250R0 251GB MAXTOR MAXTOR 6B250S0 251.0GB MAXTOR MAXTOR 6B300R0 300GB MAXTOR MAXTOR 6B300S0 300GB MAXTOR MAXTOR 6E020L0 20.84GB MAXTOR MAXTOR 6E030L0 30.0GB MAXTOR MAXTOR 6E040L0 40.1GB MAXTOR MAXTOR 6E040T0 40GB MAXTOR MAXTOR 6G160E0 160GB MAXTOR MAXTOR 6G160P0 160GB MAXTOR MAXTOR 6H400F0 400GB MAXTOR MAXTOR 6H400R0 400GB MAXTOR MAXTOR 6H500F0 500GB MAXTOR MAXTOR 6H500R0 500GB MAXTOR MAXTOR 6K040L0 41.1GB MAXTOR MAXTOR 6L020J1 20.1GB MAXTOR MAXTOR 6L020L1 20.1GB MAXTOR MAXTOR 6L040J2 39.1GB MAXTOR MAXTOR 6L040L2 39.1GB MAXTOR MAXTOR 6L040P0 41GB MAXTOR MAXTOR 6L060J3 58.6GB MAXTOR MAXTOR 6L060L3 58.6GB MAXTOR MAXTOR 6L080J4 78.2GB MAXTOR MAXTOR 6L080L0 82GB MAXTOR MAXTOR 6L080L4 78.2GB MAXTOR MAXTOR 6L080M0 82GB MAXTOR MAXTOR 6L080P0 82GB MAXTOR MAXTOR 6L100M0 100GB MAXTOR MAXTOR 6L100P0 100GB MAXTOR MAXTOR 6L120M0 123GB MAXTOR MAXTOR 6L120P0 123GB MAXTOR MAXTOR 6L160M0 164GB MAXTOR MAXTOR 6L160P0 164GB MAXTOR MAXTOR 6L160R0 164GB MAXTOR MAXTOR 6L200M0 204GB MAXTOR MAXTOR 6L200P0 204GB MAXTOR MAXTOR 6L200R0 204GB MAXTOR MAXTOR 6L200S0 204GB MAXTOR MAXTOR 6L250M0 251GB MAXTOR MAXTOR 6L250R0 251GB MAXTOR MAXTOR 6L250S0 251.0GB MAXTOR MAXTOR 6L300R0 300GB MAXTOR MAXTOR 6L300S0 300GB MAXTOR MAXTOR 6L320R0 320GB MAXTOR MAXTOR 6N040T0 40GB MAXTOR MAXTOR 6V080E0 82GB MAXTOR MAXTOR 6V160E0 160GB MAXTOR MAXTOR 6V200E0 204GB MAXTOR MAXTOR 6V250F0 251GB MAXTOR MAXTOR 6V300F0 300GB MAXTOR MAXTOR 6V320F0 320GB MAXTOR MAXTOR 6Y040L0 41GB MAXTOR MAXTOR 6Y040P0 41GB MAXTOR MAXTOR 6Y060L0 60,1GB MAXTOR MAXTOR 6Y060M0 61.5GB MAXTOR MAXTOR 6Y060P0 60.1GB MAXTOR MAXTOR 6Y080L0 80.0GB MAXTOR MAXTOR 6Y080M0 82GB MAXTOR MAXTOR 6Y080P0 80.0GB MAXTOR MAXTOR 6Y120L0 120.1GB MAXTOR MAXTOR 6Y120M0 122.9GB MAXTOR MAXTOR 6Y120P0 120.1GB MAXTOR MAXTOR 6Y160L0 164GB MAXTOR MAXTOR 6Y160M0 163.9GB MAXTOR MAXTOR 6Y160P0 163.9GB MAXTOR MAXTOR 6Y200M0 203.9GB MAXTOR MAXTOR 6Y200P0 200.0GB MAXTOR MAXTOR 6Y250M0 251.0GB MAXTOR MAXTOR 6Y250P0 250.9GB MAXTOR MAXTOR 7B250R0 251GB MAXTOR MAXTOR 7B250S0 251GB MAXTOR MAXTOR 7B300R0 300GB MAXTOR MAXTOR 7B300S0 300GB MAXTOR MAXTOR 7H500F0 500GB MAXTOR MAXTOR 7H500R0 500GB MAXTOR MAXTOR 7L250R0 251GB MAXTOR MAXTOR 7L250S0 251GB MAXTOR MAXTOR 7L300R0 300GB MAXTOR MAXTOR 7L300S0 300.1GB MAXTOR MAXTOR 7L320S0 324GB MAXTOR MAXTOR 7V250F0 251GB MAXTOR MAXTOR 7V300F0 300GB MAXTOR MAXTOR 7V320F0 320GB MAXTOR MAXTOR 7Y250M0 251.0GB MAXTOR MAXTOR 7Y250P0 251.0GB MAXTOR MAXTOR ST980215A 80GB MAXTOR MAXTOR STM31000333AS 1000GB MAXTOR MAXTOR STM31000340AS 1000GB MAXTOR MAXTOR STM3120814A 120GB MAXTOR MAXTOR STM3160211AS 160GB MAXTOR MAXTOR STM3160212A 160GB MAXTOR MAXTOR STM3160215A 160GB MAXTOR MAXTOR STM3160215AS 160GB MAXTOR MAXTOR STM3160811AS 160GB MAXTOR MAXTOR STM3160812A 160GB MAXTOR MAXTOR STM3160812AS 160GB MAXTOR MAXTOR STM3160815A 160GB MAXTOR MAXTOR STM3160815AS 160GB MAXTOR MAXTOR STM3200820A 200GB MAXTOR MAXTOR STM3200820AS 200GB MAXTOR MAXTOR STM3250310AS 250GB MAXTOR MAXTOR STM3250620A 250GB MAXTOR MAXTOR STM3250820A 250GB MAXTOR MAXTOR STM3250820AS 250GB MAXTOR MAXTOR STM3250824AS 250GB MAXTOR MAXTOR STM3300622A 300GB MAXTOR MAXTOR STM3320613AS 320GB MAXTOR MAXTOR STM3320620A 320GB MAXTOR MAXTOR STM3320620AS 320GB MAXTOR MAXTOR STM3320820A 320GB MAXTOR MAXTOR STM3320820AS 320GB MAXTOR MAXTOR STM3402111A 40GB MAXTOR MAXTOR STM3500320AS 500GB MAXTOR MAXTOR STM3500630A 500GB MAXTOR MAXTOR STM3500630AS 500GB MAXTOR MAXTOR STM3750330AS 750GB MAXTOR MAXTOR STM3802110A 80GB MAXTOR MAXTOR STM380211AS 80GB MAXTOR MAXTOR STM380215A 80GB MAXTOR MAXTOR STM380215AS 80GB MAXTOR MAXTOR STM380811AS 80GB MAXTOR MAXTOR STM380815AS 80GB There are 163 HARD DISKs listed here.