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If my SSD drive dies or the boot partition gets corrupted somehow, then I have a bootable backup. If the SSD drive actually dies, then I'm assuming I can find a hack to still boot from the mechanical drive. Really my main concern was to have two hard drives inside versus one because inevitably one of them will fail. I have a about 25-30 hard drives in my server closet that have died over the past 20 years at my small company, and they include a couple of SSD drives.

I also backup to network storage, but I would probably never use it because I generally like to start fresh with a new install. I do not keep any data on my computer; only applications. The only exception would be my VM file and that I would have to restore from a TM backup from my Mac Server or NAS.

OK, thank you for the explanation. Our approaches to back-up are very different.

- David
 
It's my work machine (as in, my desk at work, not my own personal machine). No faults, just physics running its course.

It will give you good speeds, but only for the apps and content you're viewing frequently. Otherwise you're stuck with read/write speeds of any other 7200rpm drive (if 2013 or later, 5400rpm for 2012). There's nothing else to it. It's a standard 7200rpm drive in there, and that's what you're reading and writing to after ~100GB is used up (unless the file in question is part of that 100GB, of course).

With the hardware of these iMacs, a 7200rpm drive would be a bottleneck. Therefore, inherently, a Fusion drive is the bottleneck of any Fusion drive equipped iMac with more than 100GB of frequently used data on it. Depending on your workflow and usage of those archived files, you may or may not notice the impact of this.

Fan speed/noise and choice of hard drive should not be linked!



I'm pretty sure most people DO NOT access more than 100GB of material on their internal hard drive, also the technology behind the Fusion is very intelligent as it is constantly swapping, measuring accessing your most used files and placing them in order.

So if My Main programs are on this 100GB SSD it would always be faster than any standard spinning mechanical HD. Also this is my work machine as well where I am constantly video editing. Now onto another note, the only thing I wish was I could swap out the graphics card for a 4GB as at times my 2GB gets full when working in Final Cut and Resolve forcing me to restart.

Currently looking for an external SSD though as standard 7200rpm drives is really slowing me down...,,,..
 
I'm pretty sure most people DO NOT access more than 100GB of material on their internal hard drive, also the technology behind the Fusion is very intelligent as it is constantly swapping, measuring accessing your most used files and placing them in order.

So if My Main programs are on this 100GB SSD it would always be faster than any standard spinning mechanical HD. Also this is my work machine as well where I am constantly video editing. The only thing I wish was I could swap out the graphics card for a 4GB as at times my 2GB gets full when working in Final Cut and Resolve forcing me to restart.

Currently looking for an external SSD though as standard 7200rom drives is really slowing me down...,,,..

Professional do. I have the 1TB SSD and would have purchased a larger SSD if it was available. I have over 220GB in apps alone. Fusion is an innovative idea for the casual consumer but not beyond.

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Currently looking for an external SSD though as standard 7200rpm drives is really slowing me down...,,,..

Here you go. I have one arriving tomorrow (delayed by weather).

http://www.bhphotovideo.com/c/product/1041407-REG/lacie_9000477_little_big_disk_5tb.html
 
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I'm pretty sure most people DO NOT access more than 100GB of material on their internal hard drive, also the technology behind the Fusion is very intelligent as it is constantly swapping, measuring accessing your most used files and placing them in order.

So if My Main programs are on this 100GB SSD it would always be faster than any standard spinning mechanical HD. Also this is my work machine as well where I am constantly video editing. Now onto another note, the only thing I wish was I could swap out the graphics card for a 4GB as at times my 2GB gets full when working in Final Cut and Resolve forcing me to restart.

Currently looking for an external SSD though as standard 7200rpm drives is really slowing me down...,,,..

I respectfully disagree. I was using my 3TB fusion until I got fed up with the hard drive grinding away when I'm doing random things. 100GB really isn't that much. I like the knowledge that EVERY app is running off the SSD, and until we have more control over that - it doesn't happen. If you tend to listen to music a lot, your music collection - for example, will go on the SSD and that app you like so much - will dump off to the hard drive.

I'm much happier now going full SSD (external 1TB Thunderbolt), and using the fusion disk as a scratch disk and for my photo collection.
 
iMac with 5K Display Update?!

I'm pretty sure most people DO NOT access more than 100GB of material on their internal hard drive


As others have said, that's just simply not true. Someone with 700GB of data, such as yourself, will likely use more than 100GB on a fairly regular basis.

If you don't - you're proving my point - why keep it on a desktop computer? Store it on a network drive, share it across all your devices, all the time. The speed difference between a network attached SSD and your 7200rpm Fusion drive will be negligible, if not favoured towards the NAS. And the NAS speeds are only going to get better.

It doesn't even come down to affordability. The 256GB SSD is the same price as a Fusion drive. Put all your media on a NAS, and keep ~200GB of apps, frequent files, and ongoing work projects on the iMac. The external storage could even be a 7200rpm drive - it doesn't matter, the bottleneck will be moved outside of your $3,000 iMac and can be alleviated at ease later, without needing to drop $3k.

So even if you have 2TB of data, a 256GB SSD is still the better option, because you're getting ~220GB of your data on super fast SSD, vs. 100GB. You can later extend that to xTB of thunderbolt/SSD storage, which is incomparably faster than the Fusion HDD. With the Fusion drive, you're forever stuck with a bottleneck that predates the 2000s, or indeed an empty spinning hard drive inside your expensive iMac.

As far as I see it, a Fusion drive doesn't make sense financially or practically, which is why I was recommending an SSD like many others. That's all.

It's not subjective stuff I'm putting down here. I myself am on a DYI fusion drive with a 240GB SSD and 1TB HDD, and so I understand the shortfalls. Since I got my NAS, my internal HDD is pretty much used as a temporary drive.
 
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I can understand the basic desire to get the best that you can, but it also doesn't make any sense for me.

I have spent too much money in my lifetime on electronics and then upgraded when something newer came out for that slight bump it gave, but looking back it never really amounted to much.

I had an old Windows PC with the SandyBridge i7-2600 and it was significantly faster than my older AMD processor. After 2 years I replaced it with the newer and faster i7-3770 and to be honest that .1ghz made zero difference.

I bought the i7 riMac that is .5ghz faster still, and performance wise you can't tell the difference. The screen is fantastic, and it's a mac so the OS works better and that was the main reason I bought this machine, but considering there has been 3.5 years and two complete chip design changes, but the performance improvement is only on paper, and not something that is really that noticeable.. I can't perceive in my day to day operations a 1-2 second improvement.

The reason to get the riMac is for the screen. No other reason, and I doubt that the next itteration of intel chips will make that big a difference that you will actually perceive an improvement over what is currently out here.



To be fair, Intel hasn't made anything jaw dropping since Sandy Bridge CPUs. Before the riMac I was still running a 2500k, best cpu ever. They haven't had any competition from AMD since then too.
 
That's great if you don't need the space. I personally need the space of a 1TB Fusion drive so it works great for me. The Fusion drive is a good bang for buck with a balance of speed and space.

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I agree for the most part but if you do video work and a lot of rendering, the difference it night and day. For casual usage like web browsing and e-mail, the difference isn't all that much.

The fusion mechanical drives add heat to the rImac enclosure.
 
You must have a faulty drive, My 1Tb Fusion which is about 700GB full still gives me excellent read and write speeds vs a standard 7200rpm HD. Also My Machine is quiet, DEAD silent and only hear the fans kick in when I'm rendering multiple Raw video files.

No, he might work in a quieter environment though, i hear the noise the HD makes it's not DEAD silent when it gets used, but the MyBook Duo makes more noise so it doesn't really matter to me.
 
My Internal HD on my computer works perfect and never had a problem, no need for a larger SSD when my 1TB Fusion works perfectly.

Outside of surfing the net, listening to iTunes all I do is work in my Video Editing programs (Final Cut, Resolve, etc.) which run perfect. My ONLY slow-down has been using my external Raid 0 drives reading/writing which is why I am purchasing an external SSD.


My computer is Silent as stated and I work from my home where there's no noise at all. Final Cut and similar programs launch in seconds and works perfect.

My Specs are
3.4 i7GHZ
24GB
680MX 2GB
1Tb Fusion
 
Anyone arguing for an heat and noise and vibration monster on the inside of a computer just does not get it.

This is 2015. And I believe that SSD's are actually for everyone. The exception is external spinners. Knock yourself out on those.

I have a stack of 500GB external spinners in the drawer. Once I saw how fast an external SSD was, I vowed to never go back. It's awesome.

Do keep in mind that I have a 512GB Internal SSD. So I would never need more than say a 1TB external drive. I have a 512 and that is fine for now. Prices will come down :)

Also for the record, I use Backblaze as an added layer of backup.

I have been a huge fan of the SSD, long before they were what they are today. Slow, extremely unreliable in the beginning.

I still think some are way better than others. But overall as a group they are way better than the early days. My first SSD = 16GB.
 
iMac with 5K Display Update?!

My Internal HD on my computer works perfect and never had a problem, no need for a larger SSD when my 1TB Fusion works perfectly.


Great, you're happy living with it. But that's all subjective and personal to you. That wasn't what we were discussing here.

Fact is, the internal 7200rpm standard-issue HD of your Fusion drive will be the primary bottleneck on your machine for more common tasks (general read/write).

We are recommending future buyers opt-out of this easily avoidable bottleneck and instead go for a single SSD. I am yet to come across any reason to choose a Fusion drive on a desktop computer when there is a reasonable SSD option at no extra cost.

External storage is much, much faster and, if you don't like wires, then wireless network storage is almost as fast and much more suitable for cross-device, cross-platform sharing.
 
You must have a faulty drive, My 1Tb Fusion which is about 700GB full still gives me excellent read and write speeds vs a standard 7200rpm HD. Also My Machine is quiet, DEAD silent and only hear the fans kick in when I'm rendering multiple Raw video files.
Same here! Very happy with my 3TB Fusion Drive. The machine is very fast and very very quiet (I can hear the fan when I'm playing 3D games, but I have never heard the spinning HDD).
And an external HDD is far far more noisy than my machine: I don't wan't any external storage (except for back ups), it's noisy and not very convenient with all the cables. Plus back uping is far more complicated when you have external storage. I use Time Machine and Carbon Copy Cloner to back up: in one unique operation, all my system and documents are secure.

And I can't imagine buying today a machine with less space than my 2007 iMac (750GB...). Fusion Drive is a good compromise for me: not as fast as a pure SSD, but a lot faster than a spinning HDD. And all documents I use often benefit from the SSD, that would'nt be the case if my documents were on an external HDD...

That being said, I can understand peple who definitely need speed and choose the SSD. Today it's a compromise in both ways: space for the full SSD, and speed for the Fusion Drive. Only a cheap 3TB SSD will make everyone happy ;)

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The fusion mechanical drives add heat to the rImac enclosure.
A modern HDD is less than 10W, it's not the HDD who warm up the rImac, it's the AMD GPU... Look at my temps on my non Retina iMac with HDD and nVidia: it's far more cooler than a Retina with AMD and no HDD ;)

201412_temp-imac-27.png
 
We are recommending future buyers opt-out of this easily avoidable bottleneck and instead go for a single SSD. I am yet to come across any reason to choose a Fusion drive on a desktop computer when there is a reasonable SSD option at no extra cost.
There have been reasons given, you just don't listen. Besides, there IS extra cost. Sure, you get a small SSD inside for the same cost as a 1TB fusion but then you still need to buy an external drive.
 
There have been reasons given, you just don't listen. Besides, there IS extra cost. Sure, you get a small SSD inside for the same cost as a 1TB fusion but then you still need to buy an external drive.

He is listening. Andy91 wrote several thoughtful and informative posts. While you may not accept his advice and suggestions, they maybe helpful to others who are reading this thread but not posting.

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Only a cheap 3TB SSD will make everyone happy ;)

Some day soon!
 
There have been reasons given, you just don't listen. Besides, there IS extra cost. Sure, you get a small SSD inside for the same cost as a 1TB fusion but then you still need to buy an external drive.
That's true! And an external HDD is far louder than an iMac with Fusion Drive...

Some day soon!
Just a matter of time :) Fusion Drive is a transationnal techno, to compensate ths too small capacity of actual SSD, for people who don't want external storage.
 
That's true! And an external HDD is far louder than an iMac with Fusion Drive...

Honestly, I just put my head in my palms.

An "external HDD" is the same hardware as your Fusion drive HD. It's identical. It's the same thing, literally.

Put the external drive under your desk. Suddenly it's quieter. Put the external storage in a complete different room...well.

Alternatively, use an external SSD - the primary recommendation in this thread - and there's no noise even if you strap it to your own damn face.

Come on guys, stop clutching at straws.
 
Honestly, I just put my head in my palms.
Very happy for you!!

An "external HDD" is the same hardware as your Fusion drive HD. It's identical. It's the same thing, literally.
I was just saying an external HDD is louder than a HDD enclosed in an iMac, no need to be aggressive. I can hear the noise of my TM back up when I swich the external drive on. I've never heard the internal HDD of my FD.

Put the external drive under your desk. Suddenly it's quieter. Put the external storage in a complete different room...well.

Alternatively, use an external SSD - the primary recommendation in this thread - and there's no noise even if you strap it to your own damn face.

Come on guys, stop clutching at straws.
More complicated or more expensive. I prefer my Fusion Drive :) One unique internal drive, easy to configure, to access and to back up. :)
 
I purchased the 5k within minutes of the applestore.com re-opening after the end of the Apple event where it was announced back in October. I had been wanting to purchase a new 27" iMac and the rumor was that they were going to release a retina screen so I had been waiting for a few months. The presentation about the device looked so amazing and I was so excited that the rumors were true. I went with the upgraded 4.0 GHz i7 CPU, 4 GB graphics card, 3 TB Fusion Drive and 16 GB RAM. I don't use it for any professional work at all, but since I usually keep my computers for 5 years or so I always try to get more then what I need. It cost a LOT of money, so I was nervous.

It finally arrived after about a week. I have been using it for 3 solid months now and I am absolutely blown away with it. It is so amazing. I use mine in my house and much of the time it is completely quiet and I can't hear it at all. When I am doing video conversions or playing high end games I definitely hear the fan kick in, but even then it isn't loud, just noticeable.

I preferred to go with more internal storage and chose the 3 TB Fusion Drive as opposed to a much smaller 228 GB SSD. The SSD is faster and quieter technically, but but it is negligible at best. I know because I have another system that has only an SSD and it's not noticeably that mush faster even with large files. My thinking is why buy an iMac that has everything built into a single unit only to go out and buy something else that sits on the desk next to it that is going to be louder then it would be if it was in the unit itself. Plus the external storage isn't SSD so now you are dealing with the bottle neck of that spinning drive? The answer is there isn't a good reason for it if you want a lot of storage.

I have had maybe 2 issues since I've had it. One was due to Safari not finding web pages when clicking on links and the other was the Mail application not synching with the gmail server. Both of these issues were due to Yosemite, not the 5k iMac.

The 5K is benchmarked faster than the lower end iMac Pro! There is no need to wait for the 5K to be upgraded. If you have a 27" iMac that was built in the last couple years then it's probably worth waiting a couple years to upgrade in general as you already have an awesome computer, but simply waiting for the 5K to be improved before purchasing one because it isn't fast enough for you now is one of the most ludicrous things I have ever heard.
 
iMac with 5K Display Update?!

I was just saying an external HDD is louder than a HDD enclosed in an iMac, no need to be aggressive. I can hear the noise of my TM back up when I swich the external drive on. I've never heard the internal HDD of my FD.

And I was just saying that's factually incorrect. You're comparing two different drives. It's not valid.


More complicated or more expensive. I prefer my Fusion Drive :) One unique internal drive, easy to configure, to access and to back up. :)


Back to subjective context, no facts. It's actually two drives and works the same way as having an external one in terms of config and backup, but we shall move on.

Still no tangible advantages to a Fusion drive.
 
Still no tangible advantages to a Fusion drive.

Cost, it's slightly cheaper than 256 GB + external storage assuming that much storage is needed. Of course the disadvantages still include much slower 128 GB SSD, extra heat added to the machine, and difficult replacement when it fails. Unless the Fusion drive is de-fused you also have the disadvantage of not being able to decide what goes on which drive.
 
And I was just saying that's factually incorrect. You're comparing two different drives. It's not valid.
No I am not, so it's valid M. Dwight Schrut. Same HDD in my iMac and in my external Drive (Seagate ST3000). ;)

Back to subjective context, no facts. It's actually two drives and works the same way as having an external one in terms of config and backup, but we shall move on.

Still no tangible advantages to a Fusion drive.
The FD is easier to back up, it's a fact: the system and the datas are on the same unit. You just have to back up one drive.
With one bootable clone with CCC I can access to both my system and my datas.
 
iMac with 5K Display Update?!

True, good point redheeler. I had overlooked that.

Advantage #1: save $40*

* only applicable if you don't already have an external drive. Slows down, heats up and makes your $3,000 product marginally noisier.

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No I am not, so it's valid M. Dwight Schrut. Same HDD in my iMac and in my external Drive (Seagate ST3000).

I've never looked into which drives are in the Apple TMs. I'll have a look later. :)

My main point is that saying external drives are more noisy doesn't make sense. My external drive isn't even on the same floor in my house! And an external SSD is silent?



The FD is easier to back up, it's a fact: the system and the datas are on the same unit. You just have to back up one drive.

With one bootable clone with CCC I can access to both my system and my datas.

Fusion drive:
SSD = OS and some data
HDD = data
Backup = two drives, one process

External option:
SSD = OS and more data
External drive = data
Backup = two drives, one process

I'm lost as to why it's simpler?
 
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I must admit I don't know how to make one bootable disk with my system and my datas in one opeation with the external storage option ;)

And I just don't wan't to buy a +3K computer with the capacity of computers that were sold 10 years ago. If Apple offer the FD as an option, I'm sure that it fits the need of some people better than a (very) small SSD... Or the (very) expensive 1TB.

It's a choice to make, and I don't see why for me a SSD would be a better option (and the heat argument, it's very funny... A HDD consume less than 10W nowaday, the 295 GPU it's more than 100W...).

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I've never looked into which drives are in the Apple TMs. I'll have a look later. :)

My main point is that saying external drives are more noisy doesn't make sense. My external drive isn't even on the same floor in my house! And an external SSD is silent?
Like I said, I can hear my Seagate spinning in my external Lacie drive, but I can't hear the HDD in the iMac, just because the noise is more contained in the iMac chassis.

And yes, an external SSD is silent, but very expensive if you wan't big capacity. I have 3TB in my machine (I love my FD!!), if I wan't that on an external SSD volume, it's not just 40$ like you said ;)
 
And I was just saying that's factually incorrect. You're comparing two different drives. It's not valid.





Back to subjective context, no facts. It's actually two drives and works the same way as having an external one in terms of config and backup, but we shall move on.

Still no tangible advantages to a Fusion drive.

Wow man. Some people DON'T want external hard drives, yet you keep arguing your point like it works for everyone. Network storage?? Just no.
 
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