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Nathan Kendall
imac storage and video editing.
on Jul 11, 2017 at 1:13:32 am

Hi
this may be more for computer forum, but I thought i ask here since about mac for editing.

I am considering buying a 5k imac for photo and video editing. I have decided on what config except the storage.
My current pc has the fusion type configuration. it works out well. I just am not sure if I want to do an all ssd or the 2T fusion drive.

pros of Fusion:
fast ssd and large storage
internal storage

Cons:
2 linked drives
when unlinking formats the drives and I lose everything even os?

With unlinked drives then I can know were I am saving projects an files. I like to use SSD as scratch disk. I understand the fusion drive does this but I prefer to just save my project destination were I want it on SSD and know my project will be working from there.


Pros of SSD only
larger ssd storage than fusion
dead silent

Cons SSD only
using external drives for video storage.

I have a Samsung SSD EVO 250. possibly I could get 2T fusion (128 SSD) then use Samsung as extra for scratch disk and project files.

Any suggestions or detailed information on method appreciated


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John Rofrano
Re: imac storage and video editing.
on Jul 11, 2017 at 12:10:13 pm

After reading your post, it sound like you want to be in control of where your data is placed (because you obviously have a Fusion drive and know how well it works) so I would recommend that you get a regular SSD.

I would not unlink the Fusion drive. The SSD isn't very big in a Fusion drive so you might be disappointed with the size once you unlink them. I believe the 1 TB Fusion drive only has a 24GB SSD and the 2-3 TB Fusions use 128GB SSDs. The true SSDs are 256 GB, 512 GB & 1TB.

I always use external drives for all of my video assets. The argument about external vs internal drives made sense back in the day when external I/O was much slower than the internal Bus. With Thunderbolt 3 that is no longer the case so who cares where the physical storage is? It performs the same inside or out (ok, maybe the internal SSD is faster but you get the idea).

It sounds like you will only be happy with an SSD so that you can control where data is placed so just go for it. Buy a Thunderbolt external drive and place it behind the iMac and pretend that it's really inside and be happy. :-D

~jr

http://www.johnrofrano.com
http://www.vasstsoftware.com



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Nathan Kendall
Re: imac storage and video editing.
on Jul 11, 2017 at 6:09:03 pm

Thanks John Rofrano for your reply.

Do you think that 256 will be fine for apps I will be using? seems all apple apps are around under 8GB each.


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John Rofrano
Re: imac storage and video editing.
on Jul 12, 2017 at 3:24:39 am

It really depends on what else you will use the computer for. On my main Mac Pro I have about 58GB of music and 57GB of photos so right there is about 115GB. If I had a 256GB drive I'd be down to 141GB without any apps. If you don't have a large music or photo library you should be fine with 256GB.

~jr

http://www.johnrofrano.com
http://www.vasstsoftware.com



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Patrick Donegan
Re: imac storage and video editing.
on Aug 20, 2017 at 5:37:02 am

If I had a 256 GB SDD ....

Oh, wait - I do!
I have one on my 2011 MBA!
Actually, it is only 128 GB, ..... very small..., and I fill it all the way up.

FCP X, Motion, Ableton Live, Logic Pro X, and a few HD utilities.
And all there included files

AND

I keep my music and my Photos on external devices.
Also makes it easy to switch that over to my iMac 2012.

So, 256 GB could do it.

I am considering either adding or replacing the drive in my iMac 2012 with a SSD.
It may be just the thing to give it new life and get rendering and compressing faster.

FCP X 10.2.3 - user since FCP 1.25
iMac mid 2011, MBA mid 2012
iPhone 4
HVX-200, Shure wireless mic
Miller Solo tripod
Advanta-Jib


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Ken Ramsauer
Re: imac storage and video editing.
on Jun 23, 2018 at 3:12:55 pm

I have a similar decision to make. I just got a used late 2015 iMac with the 2tb Fusion Drive (128gb is SDD) and I just bought a 500gb Samsung T5 USB 3.0 (my iMac is USB 3.0 only). I will have a total of 40gb of RAM s soon as this Monday but for now it’s only 8gb.

I was thinking to use my external SSD as a Adobe Scratch Disk only and use the Fusion drive for the Media storage BUT because the SSDs are so cheap would it be faster to use two external SSDs one dedicated for Media storage and one dedicated for the Scratch Disk?
What about using the Scratch Disk for both Media and Scratch? Is this still faster than using the internal Fusion Drive? Thank you for any advice


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John Rofrano
Re: imac storage and video editing.
on Jun 24, 2018 at 8:04:47 pm

[Ken Ramsauer] "I was thinking to use my external SSD as a Adobe Scratch Disk only and use the Fusion drive for the Media storage BUT because the SSDs are so cheap would it be faster to use two external SSDs one dedicated for Media storage and one dedicated for the Scratch Disk? "
This decision depends on two things:

(1) SSD's have a finite "write life". That means that you can write to them a fixed number of times and then wear out and go dead. For example, Intel's 335 Series 240GB SSD's are rated for 20GB of writes per day for three years, which works out to about 23.5TB of total writes. Most people would not reach this under normal use but the workload of a scratch disk is not normal use. Scratch files are constantly being created, updated, and destroyed and because of this, an SSD is not the best medium for a scratch disk unless you don't mind replacing them prematurely (which you might be OK with). They are fast, but they don't last as long as a HDD.

(2) Is the USB 3.0 bus fast enough to keep up with the throughput of the SSD drive? The USB 3.0 specification says that it can handle up to 640MB/s and the Samsung T5 is rated at 540MB/s Transfer Speed so in theory, you should get top speed from your external SSD via USB 3.0. Actual results may vary depending on how many other devices are sharing the USB 3.0 bus. (BTW, your 2015 iMac has Thunderbolt 2 ports which are faster than USB 3.0. )
[Ken Ramsauer] "What about using the Scratch Disk for both Media and Scratch? Is this still faster than using the internal Fusion Drive? "
Whether it would be faster to use two external SSD's or one SSD for both depends on how well your Fusion drive performs because, after all, it contains an SSD as well and Apple usually uses crazy fast SSD's. The SSD in my 2015 MacBook Pro has Read speeds of 1,675MB/s! That's 3x faster than your Samsung T5. So don't count out using your Fusion drive for editing.

I would download Blackmagic Design Disk Speed Test which you can get from the App Store and do so measurements for yourself. Then decide which is faster.

~jr

http://www.johnrofrano.com
http://www.vasstsoftware.com



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Ken Ramsauer
Re: imac storage and video editing.
on Jun 24, 2018 at 10:30:59 pm

Thank you for this information. I am having enough issues right now with Premiere CC 17 and 18 that I want to toss them out. Darn 2018 keeps losing audio tracks. CC17 doesn’t do a good job making a transferable project to the CC 2015. Work due tomorrow.

Interesting to know about the MTBF of the SSD.

Black Magic will not even open on Higj Sierra so I can’t test anything. Been a rough week with this job.


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John Rofrano
Re: imac storage and video editing.
on Jun 25, 2018 at 11:10:29 am

[Ken Ramsauer] "I am having enough issues right now with Premiere CC 17 and 18 that I want to toss them out."
I use Final Cut Pro X and I have a very pleasant editing experience and efficient workflow. I was never a fan of Premiere or tracks and I don't like the subscription model or forced updates especially when they destabilize your system. If there is a way to turn off the automatic updates I would definitely try that once you get your system stable again of course. Then only allow an update after you have performed a backup in case anything goes wrong.
[Ken Ramsauer] "Black Magic will not even open on Higj Sierra so I can’t test anything."
I suggest that you delete it and re-download it from the App Store because it works fine with High Sierra on my Mac. This may suggest deeper issues with your Mac. It may be time for a clean re-install.

Good Luck!

~jr

http://www.johnrofrano.com
http://www.vasstsoftware.com



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