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About product and suppliers:
        Alibaba.com offers 5,700 1tb hard disk products. About 79% of these are hard drives, 12% are hdd enclosure. 

A wide variety of 1tb hard disk options are available to you, such as 2.5", 3.5", and 1.8". You can also choose from internal, external, and blade. As well as from sata, usb, and sas. And whether 1tb hard disk is server, laptop, or desktop. 

There are 5,683 1tb hard disk suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Ukraine, which supply 98%, 1%, and 1% of 1tb hard disk respectively. 

tb hard disk products are most popular in Western Europe, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 995 with ISO9001, 375 with ISO14001, and 84 with Other certification.