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Model A1419 / EMC 2806 / Late 2014 or Mid 2015. 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (ID iMac15,1); EMC 2834 late 2015 / 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (iMac17,1) All with Retina 5K displays

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Upgrading an iMac with one drive to two drives.

I am looking at buying a second hand Late 2014 iMac that was purchased with the 512GB SSD option.

Currently I am using an earlier model with a Fusion Drive. What I would like to know is if I crack open the Mac can I add a HDD to create a fusion drive with the existing SSD.

Do all the brackets and connectors exist or do they strip all that out the a customer orders a single SSD. I know how to create the logical volume and all the jazz.

I just need to know whether I can stick a drive in without buying a whole heap of parts.

Thanks in advance

J

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While you could do it, it would be a waste of the space & performance the SSD offers! A straight up two drive config is superior to a Fusion Drive when you have that large a blade SSD.

Basically, you use the SSD as your boot drive (OS) as well as hold your apps, the rest of the drive is left empty for the OS to use for V-RAM, caching, paging and depending on your app it will use it for scratch space. Your HDD is then only used to hold your content.

As far as which HDD to get I would recommend getting a 3.5” hybrid drive (SSHD) like a Seagate FireCuda SSHD

Besides the mounting screws for the drive its self the frame is present. You will need the SADA cable iMac Intel 27" 5K (Late 2014-Mid 2015) Hard Drive Cable

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iMac Intel 27" 5K (Late 2014-Mid 2015) Hard Drive Cable

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Cool thanks for the advice. the reason i’d shy away from a second SSD is that I understand there is a heat sensor issue that would need to be addressed. As I understand it the heat sensor which is hopefully there is designed for a HDD.

Other option of course is to just leave as is and by an external thunderbolt

Cheers

J

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Apple doesn't make it easy! Depending on the drive you get you may need the OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later

Depending on what your plans are an external Thunderbolt drive may be a smart move as well. This is where you need still deeper storage and/or faster I/O than what the internal SATA III (6.0 Gb/s) offers. Large video editing is a good example.

If you're just have a lot of bought music or vids or your own pictures or vids to listen and watch then the internal drive would be just fine.

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