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External hard drive

I bought recently an IMac and I would like to purchase an external hard drive to back it up.

2 suggestions, if possible:

what brand would you recommend?

iMac has a storage of 1TB, shall I buy an hard drive with same capacity or more i.e. 2TB?

thank you all in advance.



Posted on May 20, 2020 2:33 AM

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Posted on May 20, 2020 6:30 AM

Any reputable brand will work (Just don't use/install any preloaded software on the drives. That usually isn't needed and sometimes causes performance problems).


If you are using TimeMachine the backup drive should be at least 2-3x as large as the drive being backed up so it can save a history of incremental changes rather than only the latest copy.

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Question marked as Top-ranking reply

May 20, 2020 6:30 AM in response to JohnGiorgio

Any reputable brand will work (Just don't use/install any preloaded software on the drives. That usually isn't needed and sometimes causes performance problems).


If you are using TimeMachine the backup drive should be at least 2-3x as large as the drive being backed up so it can save a history of incremental changes rather than only the latest copy.

May 20, 2020 7:01 AM in response to JohnGiorgio

Most experienced users on these forums would recommend an OWC Mercury Elite Pro. These are available in a variety of capacities, and the general rule of thumb is 2-3 times the capacity of the drive(s) you will be backing up. For example:


https://eshop.macsales.com/item/OWC/ME3QH7T2.0/


If you are outside of the USA, their resellers and distributors are listed in OWC International Resellers

External hard drive

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